[ANN] cudaMiner & ccMiner CUDA based mining applications [Windows/Linux/MacOSX] - page 743.

ghur

full member

Activity: 154

Merit: 100

Quote from: highspeedtractor on March 01, 2014, 04:17:48 AM

Morning all

absolutely new to mining, especially with Nvidia and cudaminer. Following the thread here and using almost all suggested settings I am a little bit confused. Got 2 750ti yesterday and tried to get them running on Win7 32bit and Helix. The advised best setting T5x24 didn't even give me a single jay, so I played around a bit. Anyway, I ended up on T800x24 with 122000 khash/s. This does only work for about 50 accepts in a row (approx. 1 every 2 seconds), after that accept rate decreases dramatically down to 1 per minute.
Restarting the miner keeps accepts running with highspeed again. Afterburner tells me GPU usage of 74% at 50°C, but I fear that I am overloading the GPU and it shuts down slowly. Any ideas?

Regards

Dirk

You might just be seeing vardiff from the stratum upping the difficulty because you're sending many shares.
Which is perfectly fine.

Coinman422

newbie

Activity: 9

Merit: 0

Quote from: cbuchner1 on November 01, 2013, 02:03:37 PM

Quote from: StuffOfInterest on October 31, 2013, 05:56:21 AM

Quote from: cbuchner1 on October 29, 2013, 05:54:17 PM

Anyone tried a GTX 780 or GTX 780 Ti yet with cudaminer? What's the kHash/sec on it?

Interesting numbers. I don't have a 700 series but I'm getting 92-95kh/s on a GTX 650 Ti Boost. I'm surprised the speed is that much slower than a 660 Ti.

The reason I am asking is that I believe the 780 could do nearly double of what a 660Ti does. 350-400kHash/s I believe. It has twice the memory bus width (and hence bandwidth) and it has 2304 shaders compared to the 1344 shaders in the 660 Ti. I woud just like to have a confirmation of its hashing power before I shell out 400 Euros for one Wink

. Also it has Compute 3.5 capability, and I think this would allow for some extra code optimization in the future.

This is what's in my development box currently

580Ti (150 kHash) - Compute 2.1
660Ti (200 kHash) - Compute 3.0
580Ti 448 core edition (220 kHash) - Compute 2.0
GT 640 (GF 208 based) (55 kHash) - Compute 3.5

That's a pretty good variety of compute capabilites, so I can optimize for different generations of hardware.
When everything crunches simultaneously, the machine pulls 800 Watts from the power socket.

I have two evga acx 780's

GPU 0 625 kh/s both gpu's +260 engine
GPU 1 580 kh/s

highspeedtractor

newbie

Activity: 24

Merit: 0

Morning all

absolutely new to mining, especially with Nvidia and cudaminer. Following the thread here and using almost all suggested settings I am a little bit confused. Got 2 750ti yesterday and tried to get them running on Win7 32bit and Helix. The advised best setting T5x24 didn't even give me a single jay, so I played around a bit. Anyway, I ended up on T800x24 with 122000 khash/s. This does only work for about 50 accepts in a row (approx. 1 every 2 seconds), after that accept rate decreases dramatically down to 1 per minute.
Restarting the miner keeps accepts running with highspeed again. Afterburner tells me GPU usage of 74% at 50°C, but I fear that I am overloading the GPU and it shuts down slowly. Any ideas?

http://i137.photobucket.com/albums/q236/highspeedtractor/750ti.jpg

Regards

Dirk

liomojo1

hero member

Activity: 676

Merit: 500

This is pretty mean from the pool.helixcoinproject.com , already 3 hours since i stoped my miner and it still showing me minig. It should be good , but the difficulty is much higher now .

cbuchner1

hero member

Activity: 756

Merit: 502

Quote from: trancelord on February 28, 2014, 09:26:15 PM

Would like to do multiple pools.

I got this so far, but i want to add more pools

cudaminer.exe -o stratum+tcp://minercrew.org:3336 -u Miner.user -p password
cudaminer.exe -d 0,1,2 -i 1,0,0 -l auto,S27x3,28x4 -C 0,2,1

HElp will be appreciated and maybe i can donate??

CUDA Manager is an easy solution.

madman1980

newbie

Activity: 19

Merit: 0

Quote from: cvax on March 01, 2014, 03:09:13 AM

Quote from: madman1980 on March 01, 2014, 02:38:31 AM

So far, thats the only explanation i can come up with. i tried both the ribbon and usb 1x to 16x powered risers, both ~30cm in length. the board im using (biostar h81S2) has one 16x slot and 5x 1x slots. i used the 16x slot when testing the single card. Has anyone else noticed reduced performance with risers tested on a SINGLE card?? Currently adding one card at a time, and seeing how they scale. just finished adding the 4th, and so far, they are scaling well. 255-258khs on bone stock settings. not sure if i'll get through the 6 card tonight. gotta work early in the am..

Yup, just tested two different cards individually on risers to a 4x PCI-E. I lose about 6.5% performance for whichever card is on the riser. I also tested and saw that using power to the risers is pointless and is actually a waste of electricity. The cards don't need additional power and unpowered risers will do just fine. Plugging the riser's molex in actually increases power consumption by 10-15w for no hashing gains.

got all six going, all at stock settings. they scaled pretty much perfectly, WHEN compared to a single card that is also on a riser cable. I am convinced the reduced performance is due to the riser, given the card is completely dependent on it for power (no pci-e). i wonder what the maximum wattage these risers are rated at. Huh

will test some more tomorrow.. i have the gigabyte cards with the pci-e plugs too. maybe after replicating this with those cards, can determine if the risers are the culprit. heres a pic of the testing setup right now, and a screenshot of em running..

http://imgur.com/61i1zO4
http://imgur.com/nTC8UWv

cvax

member

Activity: 84

Merit: 10

Quote from: madman1980 on March 01, 2014, 02:38:31 AM

So far, thats the only explanation i can come up with. i tried both the ribbon and usb 1x to 16x powered risers, both ~30cm in length. the board im using (biostar h81S2) has one 16x slot and 5x 1x slots. i used the 16x slot when testing the single card. Has anyone else noticed reduced performance with risers tested on a SINGLE card?? Currently adding one card at a time, and seeing how they scale. just finished adding the 4th, and so far, they are scaling well. 255-258khs on bone stock settings. not sure if i'll get through the 6 card tonight. gotta work early in the am..

Yup, just tested two different cards individually on risers to a 4x PCI-E. I lose about 6.5% performance for whichever card is on the riser. I also tested and saw that using power to the risers is pointless and is actually a waste of electricity. The cards don't need additional power and unpowered risers will do just fine. Plugging the riser's molex in actually increases power consumption by 10-15w for no hashing gains.

liomojo1

hero member

Activity: 676

Merit: 500

Quote from: cbuchner1 on February 28, 2014, 06:47:32 PM

Quote from: fruitsdemers on February 28, 2014, 06:44:31 PM

Helix at the moment but I remember the maxcoin pools doing the same thing.
It's actually slightly higher than half but it's consistently about 40% lower than it should...
I'm currently using your latest build with the T2880x24 command on a 780ti.

we could try tinkering a bit with the difficulty target in the cudaminer code (artificially lowering it).
If the pools still accept these shares, you would see a higher hash rate and higher payouts

Christian

I saw the same think and was wondering why? The strangest thing is that i stoped my miner on the pool.helixcoinproject.com , now for 2 hours and it still shows on the dashboard and worker that i am active and minig with 460000 khs. i think that the pools just cant get it fast and it needs sometime to digest the info. may be they have a max limit for khs of worker , some kind of protection, but they accept shares. i dont know but it is strange.
The web chat on one of the pools, they said they show only accepted shares hashrate. It is strange man. May be they just use our hashing power for them.

madman1980

newbie

Activity: 19

Merit: 0

Code:

[quote author=cvax link=topic=167229.msg5441080#msg5441080 date=1393657934]
[quote author=madman1980 link=topic=167229.msg5440626#msg5440626 date=1393654990]
[quote author=cvax link=topic=167229.msg5439853#msg5439853 date=1393650682]
[quote author=madman1980 link=topic=167229.msg5439718#msg5439718 date=1393649926]
Hey guys,
Am new here, and new to mining with Nvidia cards. I've been following this thread for the past week, finally got my hands on a few of the 750Ti cards last night. Picked up 3 different brands, but have only had a chance to tinker with the MSI twin frozr (no pcie plug) so far. I am definitely no expert, and am learning cudaminer as I go, but wanted to share my experience so far:

I've only run one card at a time so far. Biostar H81S2 mobo, 4gb ram 750w psu. and mostly using auto-tune, as I dont understand the blocks and warps yet..
System idle = 42.2W (per killawatt meter)
gpu = +0, mem= +0, load @99% = 114W. hashrate 268 kh/s T5x19
gpu = +0, mem +300, hashrate 252kh/s (T230x1. this may have been a bad setting by auto-tune, i'm not sure. i initally was trying gpu and mem clocks others were reporting, and was getting alot of instant artifacting, or 'rapid scrolling' error. so i left it at that, and moved on to doing the TDP raising bios mod.

With TDP bios mod:

gpu = +0, mem= +0, hashrate 272khs, T10x24, gpu utilization 75% (?), and system load increased to 124W (from 114W)
gpu = +0, mem= +300, hashrate 291khs, T10x24, system load = 130Watts.

This last setting was stable for 6+ hrs while I was at work today. I have tried, briefly, with higher gpu and mem clocks, and highest i've hit was ~322khs. but i need to keep testing for stability, as i was getting errors along the way. Interestingly, the bios mod has definitely increased power draw, and has allowed near 300khs with a modest +300 mem overclock. I have seen others on this thread with much higher clocks at this speed. Christian, are you using a modified bios on your 750 Ti? I feel there is more there. Also, after the bios mod, the power % on Precision X drops to 75%. I dont understand this, or if it may be reporting it incorrectly.
I'll continue seeing how far i can push this card. I am concerned about the scalability issues others are having, and will assess this as well, when i have time to add other cards (hopefully tonight). Will keep you guys posted on my findings.
[/quote]Hi madman,

I believe your findings are in line with mine. I would say try the non-BIOS mod +300 mem overclock again with the same T10x24. My results yielded no additional hashrate with the power mod, but increased power consumption.
[/quote]

Re-ran it on stock bios, +300 mem, T10x24, and at 268-269khs, unchanged from stock clock settings. Another note, this was on the pci-e 16x slot, no riser. I just tried the card on 2 different powered riser cables (ribbon and usb), and seeing reduced hash rate ~255khs, and reduced system wattage on the killawatt meter to around 114W, even with the above mem +300 overclock. ???
[/quote]Believe risers may be expected to reduce some hashing. Did you use the riser in PCI-E 1x slots or 16x to 16x? I am about to try my risers as well. What 69charger said for T5x24 being optimum I can confirm that as I just finished profiling my 8 Zotac GTX 750 Ti's.

[/quote]

So far, thats the only explanation i can come up with. i tried both the ribbon and usb 1x to 16x powered risers, both ~30cm in length. the board im using (biostar h81S2) has one 16x slot and 5x 1x slots. i used the 16x slot when testing the single card. Has anyone else noticed reduced performance with risers tested on a SINGLE card?? Currently adding one card at a time, and seeing how they scale. just finished adding the 4th, and so far, they are scaling well. 255-258khs on bone stock settings. not sure if i'll get through the 6 card tonight. gotta work early in the am..

cvax

member

Activity: 84

Merit: 10

Quote from: madman1980 on March 01, 2014, 01:23:10 AM

Quote from: cvax on March 01, 2014, 12:11:22 AM

Quote from: madman1980 on February 28, 2014, 11:58:46 PM

Hey guys,
  Am new here, and new to mining with Nvidia cards. I've been following this thread for the past week, finally got my hands on a few of the 750Ti cards last night. Picked up 3 different brands, but have only had a chance to tinker with the MSI twin frozr (no pcie plug) so far. I am definitely no expert, and am learning cudaminer as I go, but wanted to share my experience so far:

  I've only run one card at a time so far. Biostar H81S2 mobo, 4gb ram 750w psu. and mostly using auto-tune, as I dont understand the blocks and warps yet..
System idle = 42.2W (per killawatt meter)
gpu = +0, mem= +0, load @99% = 114W. hashrate 268 kh/s T5x19
gpu = +0, mem +300, hashrate 252kh/s (T230x1. this may have been a bad setting by auto-tune, i'm not sure. i initally was trying gpu and mem clocks others were reporting, and was getting alot of instant artifacting, or 'rapid scrolling' error. so i left it at that, and moved on to doing the TDP raising bios mod.

  With TDP bios mod:

gpu = +0, mem= +0, hashrate 272khs, T10x24, gpu utilization 75% (?), and system load increased to 124W (from 114W)
gpu = +0, mem= +300, hashrate 291khs, T10x24, system load = 130Watts.

  This last setting was stable for 6+ hrs while I was at work today. I have tried, briefly, with higher gpu and mem clocks, and highest i've hit was ~322khs. but i need to keep testing for stability, as i was getting errors along the way. Interestingly, the bios mod has definitely increased power draw, and has allowed near 300khs with a modest +300 mem overclock. I have seen others on this thread with much higher clocks at this speed. Christian, are you using a modified bios on your 750 Ti? I feel there is more there. Also, after the bios mod, the power % on Precision X drops to 75%. I dont understand this, or if it may be reporting it incorrectly.
   I'll continue seeing how far i can push this card. I am concerned about the scalability issues others are having, and will assess this as well, when i have time to add other cards (hopefully tonight). Will keep you guys posted on my findings.

Hi madman,

I believe your findings are in line with mine. I would say try the non-BIOS mod +300 mem overclock again with the same T10x24. My results yielded no additional hashrate with the power mod, but increased power consumption.

Re-ran it on stock bios, +300 mem, T10x24, and at 268-269khs, unchanged from stock clock settings. Another note, this was on the pci-e 16x slot, no riser. I just tried the card on 2 different powered riser cables (ribbon and usb), and seeing reduced hash rate ~255khs, and reduced system wattage on the killawatt meter to around 114W, even with the above mem +300 overclock. Huh

Believe risers may be expected to reduce some hashing. Did you use the riser in PCI-E 1x slots or 16x to 16x? I am about to try my risers as well. What 69charger said for T5x24 being optimum I can confirm that as I just finished profiling my 8 Zotac GTX 750 Ti's.

For anyone curious here are the results of my 8 cards. Watts are system wide.
165w idle @ stock and overclocked
Overclock = +135 core +600 mem

Code:

Average Zotac GTX 750 Ti:
Stock Scrypt: 261.9kh/s
Stock Scrypt-Jane: 3.07375kh/s
Stock Keccak: 22000kh/s
OC Scrypt: 293kh/s
OC Scrypt-Jane: 3.415 kh/s
OC Keccak: 22000kh/s

Card 1:
Stock Scrypt: 260 kh/s @ 228w
Stock Scrypt-Jane: 3 kh/s @ 220w
OC Scrypt: 288 kh/s @ 230w
OC Scrypt-Jane: 3.35 kh/s @ 223w

Card 2:
Stock Scrypt: 262 kh/s @ 228w
Stock Scrypt-Jane: 3.12 kh/s @ 213w
OC Scrypt: 295 kh/s @ 230w
OC Scrypt-Jane: 3.45 kh/s @ 220w

Card 3:
Stock Scrypt: 261.5kh/s @ 222w
Stock Scrypt-Jane: 3.06kh/s @ 210w
Stock Keccak: 21570 kh/s @ 180w
OC Scrypt: 292kh/s @ 225w
OC Scrypt-Jane: 3.41 kh/s @ 215w
OC Keccak: 22088 kh/s @ 180w

Card 4:
Stock Scrypt: 264kh/s @ 228w
Stock Scrypt-Jane: 3.12kh/s @ 213w
Stock Keccak: 22296kh/s @ 181w
OC Scrypt: 300kh/s @ 230w
OC Scrypt-Jane: 3.45 kh/s @ 218w
OC Keccak: 22000kh/s @ 182w

Card 5:
Stock Scrypt: 263kh/s @ 228w
Stock Scrypt-Jane: 3.06kh/s @ 212w
Stock Keccak: 21557kh/s @ 182w
OC Scrypt: 300kh/s @ 230w
OC Scrypt-Jane: 3.44 kh/s @ 218w
OC Keccak: 22557kh/s @ 185w

Card 6:
Stock Scrypt: 263kh/s @ 228w
Stock Scrypt-Jane: 3.10kh/s @ 216w
Stock Keccak: 21822kh/s @ 181w
OC Scrypt: 295kh/s @ 231w
OC Scrypt-Jane: 3.44 kh/s @ 222w
OC Keccak: 21903kh/s @ 183w

Card 7:
Stock Scrypt: 261kh/s @ 228w
Stock Scrypt-Jane: 3.06kh/s @ 218w
Stock Keccak: 23054kh/s @ 185w
OC Scrypt: 285-290kh/s @ 230w
OC Scrypt-Jane: 3.41 kh/s @ 223w
OC Keccak: 23029kh/s @ 183w

Card 8:
Stock Scrypt: 261kh/s @ 227w
Stock Scrypt-Jane: 3.07kh/s @ 214w
Stock Keccak: 22503kh/s @ 185w
OC Scrypt: 285-290kh/s @ 228w
OC Scrypt-Jane: 3.37 kh/s @ 220w
OC Keccak: 22502kh/s @ 185w

Edit: My keccak numbers are way low with only 20% GPU usage apparently. Bad settings. They are now up around 144000kh/s.

69charger

full member

Activity: 173

Merit: 100

T5x24 is pretty much the optimal setting for the 750ti.

madman1980

newbie

Activity: 19

Merit: 0

Quote from: cvax on March 01, 2014, 12:11:22 AM

Quote from: madman1980 on February 28, 2014, 11:58:46 PM

Hey guys,
Am new here, and new to mining with Nvidia cards. I've been following this thread for the past week, finally got my hands on a few of the 750Ti cards last night. Picked up 3 different brands, but have only had a chance to tinker with the MSI twin frozr (no pcie plug) so far. I am definitely no expert, and am learning cudaminer as I go, but wanted to share my experience so far:

I've only run one card at a time so far. Biostar H81S2 mobo, 4gb ram 750w psu. and mostly using auto-tune, as I dont understand the blocks and warps yet..
System idle = 42.2W (per killawatt meter)
gpu = +0, mem= +0, load @99% = 114W. hashrate 268 kh/s T5x19
gpu = +0, mem +300, hashrate 252kh/s (T230x1. this may have been a bad setting by auto-tune, i'm not sure. i initally was trying gpu and mem clocks others were reporting, and was getting alot of instant artifacting, or 'rapid scrolling' error. so i left it at that, and moved on to doing the TDP raising bios mod.

With TDP bios mod:

gpu = +0, mem= +0, hashrate 272khs, T10x24, gpu utilization 75% (?), and system load increased to 124W (from 114W)
gpu = +0, mem= +300, hashrate 291khs, T10x24, system load = 130Watts.

This last setting was stable for 6+ hrs while I was at work today. I have tried, briefly, with higher gpu and mem clocks, and highest i've hit was ~322khs. but i need to keep testing for stability, as i was getting errors along the way. Interestingly, the bios mod has definitely increased power draw, and has allowed near 300khs with a modest +300 mem overclock. I have seen others on this thread with much higher clocks at this speed. Christian, are you using a modified bios on your 750 Ti? I feel there is more there. Also, after the bios mod, the power % on Precision X drops to 75%. I dont understand this, or if it may be reporting it incorrectly.
I'll continue seeing how far i can push this card. I am concerned about the scalability issues others are having, and will assess this as well, when i have time to add other cards (hopefully tonight). Will keep you guys posted on my findings.

Hi madman,

I believe your findings are in line with mine. I would say try the non-BIOS mod +300 mem overclock again with the same T10x24. My results yielded no additional hashrate with the power mod, but increased power consumption.

Re-ran it on stock bios, +300 mem, T10x24, and at 268-269khs, unchanged from stock clock settings. Another note, this was on the pci-e 16x slot, no riser. I just tried the card on 2 different powered riser cables (ribbon and usb), and seeing reduced hash rate ~255khs, and reduced system wattage on the killawatt meter to around 114W, even with the above mem +300 overclock. Huh

69charger

full member

Activity: 173

Merit: 100

Vertcoin and Panda are both profitable coins.

Takashi267

newbie

Activity: 6

Merit: 0

Quote from: madman1980 on February 28, 2014, 11:58:46 PM

Hey guys,
Am new here, and new to mining with Nvidia cards. I've been following this thread for the past week, finally got my hands on a few of the 750Ti cards last night. Picked up 3 different brands, but have only had a chance to tinker with the MSI twin frozr (no pcie plug) so far. I am definitely no expert, and am learning cudaminer as I go, but wanted to share my experience so far:

I've only run one card at a time so far. Biostar H81S2 mobo, 4gb ram 750w psu. and mostly using auto-tune, as I dont understand the blocks and warps yet..
System idle = 42.2W (per killawatt meter)
gpu = +0, mem= +0, load @99% = 114W. hashrate 268 kh/s T5x19
gpu = +0, mem +300, hashrate 252kh/s (T230x1. this may have been a bad setting by auto-tune, i'm not sure. i initally was trying gpu and mem clocks others were reporting, and was getting alot of instant artifacting, or 'rapid scrolling' error. so i left it at that, and moved on to doing the TDP raising bios mod.

With TDP bios mod:

gpu = +0, mem= +0, hashrate 272khs, T10x24, gpu utilization 75% (?), and system load increased to 124W (from 114W)
gpu = +0, mem= +300, hashrate 291khs, T10x24, system load = 130Watts.

This last setting was stable for 6+ hrs while I was at work today. I have tried, briefly, with higher gpu and mem clocks, and highest i've hit was ~322khs. but i need to keep testing for stability, as i was getting errors along the way. Interestingly, the bios mod has definitely increased power draw, and has allowed near 300khs with a modest +300 mem overclock. I have seen others on this thread with much higher clocks at this speed. Christian, are you using a modified bios on your 750 Ti? I feel there is more there. Also, after the bios mod, the power % on Precision X drops to 75%. I dont understand this, or if it may be reporting it incorrectly.
I'll continue seeing how far i can push this card. I am concerned about the scalability issues others are having, and will assess this as well, when i have time to add other cards (hopefully tonight). Will keep you guys posted on my findings.

Precision X is reporting % power correctly. It is just that the bois mod changed what is considered 100% power.

On a side note, other then helix coin, what coins do you guys recommend mining? Im getting tired of mining scrypt coins with my GTX 780 and would like to try mining a coin with a different algorithm.

cvax

member

Activity: 84

Merit: 10

Quote from: madman1980 on February 28, 2014, 11:58:46 PM

Hey guys,
Am new here, and new to mining with Nvidia cards. I've been following this thread for the past week, finally got my hands on a few of the 750Ti cards last night. Picked up 3 different brands, but have only had a chance to tinker with the MSI twin frozr (no pcie plug) so far. I am definitely no expert, and am learning cudaminer as I go, but wanted to share my experience so far:

I've only run one card at a time so far. Biostar H81S2 mobo, 4gb ram 750w psu. and mostly using auto-tune, as I dont understand the blocks and warps yet..
System idle = 42.2W (per killawatt meter)
gpu = +0, mem= +0, load @99% = 114W. hashrate 268 kh/s T5x19
gpu = +0, mem +300, hashrate 252kh/s (T230x1. this may have been a bad setting by auto-tune, i'm not sure. i initally was trying gpu and mem clocks others were reporting, and was getting alot of instant artifacting, or 'rapid scrolling' error. so i left it at that, and moved on to doing the TDP raising bios mod.

With TDP bios mod:

gpu = +0, mem= +0, hashrate 272khs, T10x24, gpu utilization 75% (?), and system load increased to 124W (from 114W)
gpu = +0, mem= +300, hashrate 291khs, T10x24, system load = 130Watts.

This last setting was stable for 6+ hrs while I was at work today. I have tried, briefly, with higher gpu and mem clocks, and highest i've hit was ~322khs. but i need to keep testing for stability, as i was getting errors along the way. Interestingly, the bios mod has definitely increased power draw, and has allowed near 300khs with a modest +300 mem overclock. I have seen others on this thread with much higher clocks at this speed. Christian, are you using a modified bios on your 750 Ti? I feel there is more there. Also, after the bios mod, the power % on Precision X drops to 75%. I dont understand this, or if it may be reporting it incorrectly.
I'll continue seeing how far i can push this card. I am concerned about the scalability issues others are having, and will assess this as well, when i have time to add other cards (hopefully tonight). Will keep you guys posted on my findings.

Hi madman,

I believe your findings are in line with mine. I would say try the non-BIOS mod +300 mem overclock again with the same T10x24. My results yielded no additional hashrate with the power mod, but increased power consumption.

cvax

member

Activity: 84

Merit: 10

Quote from: cbuchner1 on February 28, 2014, 01:59:19 PM

Quote from: debido666 on February 28, 2014, 12:43:33 PM

A Bit More on the Actual Power Usage of GeForce GTX 750 Ti
http://cryptomining-blog.com/1141-a-bit-more-on-the-actual-power-usage-of-geforce-gtx-750-ti/

holy moly! Surprising results...

I'm sure the author of this article's findings are much more accurate than what I can do with a Kill-a-watt on the whole system, but here are my results.

No graphics card in computer: 153w idle
1x 750 Ti in 16x slot, no BIOS power mod, stock:
165w idle
230w scrypt load, ~250kh/s
223w yacoin load, ~3kh/s

1x 750 Ti in 16x slot, no BIOS power mod, +135core +600mem:
166w idle
230w scrypt, ~290-310kh/s
223w yacoin, ~3.35kh/s

1x 750 Ti in 16x slot, BIOS power mod to 65.5w, +135core +600mem:
166w idle
255w scrypt, ~290-310kh/s
225-230w yacoin, ~3.35kh/s

What this leads me to believe is that we should NOT be doing the BIOS power mod. It yields no benefit in hashrates, just increased power consumption. I couldn't get my card stable at higher than +600mem overclocking with or without the BIOS power mod.

madman1980

newbie

Activity: 19

Merit: 0

Hey guys,
  Am new here, and new to mining with Nvidia cards. I've been following this thread for the past week, finally got my hands on a few of the 750Ti cards last night. Picked up 3 different brands, but have only had a chance to tinker with the MSI twin frozr (no pcie plug) so far. I am definitely no expert, and am learning cudaminer as I go, but wanted to share my experience so far:

  I've only run one card at a time so far. Biostar H81S2 mobo, 4gb ram 750w psu. and mostly using auto-tune, as I dont understand the blocks and warps yet..
System idle = 42.2W (per killawatt meter)
gpu = +0, mem= +0, load @99% = 114W. hashrate 268 kh/s T5x19
gpu = +0, mem +300, hashrate 252kh/s (T230x1. this may have been a bad setting by auto-tune, i'm not sure. i initally was trying gpu and mem clocks others were reporting, and was getting alot of instant artifacting, or 'rapid scrolling' error. so i left it at that, and moved on to doing the TDP raising bios mod.

  With TDP bios mod:

gpu = +0, mem= +0, hashrate 272khs, T10x24, gpu utilization 75% (?), and system load increased to 124W (from 114W)
gpu = +0, mem= +300, hashrate 291khs, T10x24, system load = 130Watts.

  This last setting was stable for 6+ hrs while I was at work today. I have tried, briefly, with higher gpu and mem clocks, and highest i've hit was ~322khs. but i need to keep testing for stability, as i was getting errors along the way. Interestingly, the bios mod has definitely increased power draw, and has allowed near 300khs with a modest +300 mem overclock. I have seen others on this thread with much higher clocks at this speed. Christian, are you using a modified bios on your 750 Ti? I feel there is more there. Also, after the bios mod, the power % on Precision X drops to 75%. I dont understand this, or if it may be reporting it incorrectly.
   I'll continue seeing how far i can push this card. I am concerned about the scalability issues others are having, and will assess this as well, when i have time to add other cards (hopefully tonight). Will keep you guys posted on my findings.

cwizard

member

Activity: 98

Merit: 10

Quote from: Number6 on February 27, 2014, 05:53:18 PM

Ok, got my parts in and my initial 2 GIGABYTE GV-N75TOC-2GI GTX 750 Ti's in, and have everything up and running. So far I am only managing to get ~280 kHash out of each one. Running Windows 7 64 with latest Nvidia drivers and latest cudaminer.

My launch config is -m0 -l T5x24 -I 0 -C 1 -H 1

Tried different values for m, C and H and no difference. I am also running a slight +50 core and +300 memory overclock. I was hoping to see the 320 kHash everyone else seems to be getting but running out of ideas. Any insight or ideas of things to try would be appreciated.

Just popped in the same card as you to test,

+100 GPU
+700 Memory Clock

-m 0 -H 1 -i 0 -l T5x24

297 khash/s and holding

bacon_wrangler

newbie

Activity: 26

Merit: 0

Quote from: trancelord on February 28, 2014, 09:26:15 PM

Ok, how do I set my gtx 680

cudaminer to change pools if 1 cant connect for a certain amount of time?

Would like to do multiple pools.

I got this so far, but i want to add more pools

cudaminer.exe -o stratum+tcp://minercrew.org:3336 -u Miner.user -p password
cudaminer.exe -d 0,1,2 -i 1,0,0 -l auto,S27x3,28x4 -C 0,2,1

HElp will be appreciated and maybe i can donate??

Use cudamanager to run cudaminer.

fruitsdemers

newbie

Activity: 37

Merit: 0

Quote from: myagui on February 28, 2014, 08:17:43 PM

Quote from: cbuchner1 on February 28, 2014, 06:47:32 PM

Quote from: fruitsdemers on February 28, 2014, 06:44:31 PM

Helix at the moment but I remember the maxcoin pools doing the same thing.
It's actually slightly higher than half but it's consistently about 40% lower than it should...
I'm currently using your latest build with the T2880x24 command on a 780ti.

we could try tinkering a bit with the difficulty target in the cudaminer code (artificially lowering it).
If the pools still accept these shares, you would see a higher hash rate and higher payouts

Christian

Just to add that I too have a similar experience, with the latest & greatest release from today (and also around Max release). I'm seeing the same 40% less hashrate reported by the pool with Helixcoin. Nothing seems to change if I setup separate workers for my GTX770 & the GTX 750 TI, or if I keep them on a single launch command.

The only thing odd that I've noticed, is that the hashrate reported by the pool get's closer to the value reported by Cudaminer, when higher Vardiff kicks in (at say 128). At Vardiff 32 & 64 the discrepancy is much larger, and it's not a case of just the expected variations in share findings or luck, as I see the same hashrate reported over long periods of time (as long as the Vardiff remains the same).
Is it possible that the "changes" or "fix" that you worked on shortly after the Maxcoin launch have left some gremlin vestiges?

PS: Again an awesome bump for the 'green team' with that latest update with the hand from nvidia. Big thanks for the update Christian. I'm surely going to donate as soon as I'm fortunate to get a break on a new coin/algo launch.
Cheers!

Thank you for corroborating.
Over longer periods of time, the hashrate reported by the pool seems to shrink even more to perhaps 1/5th of what's being reported directly from the client. After trying all manners of shenanigans, I've noticed that restarting my cudaminer every few minutes seems to attenuate, if not eliminate, the problem a little so it definitively feels like it's some kind of error with vardiff...

Unless this can be somehow fixed, it's currently more profitable to mine vertcoin.

Topic: [ANN] cudaMiner & ccMiner CUDA based mining applications [Windows/Linux/MacOSX] - page 743. (Read 3426976 times)