Topic: [ANN] cudaMiner & ccMiner CUDA based mining applications [Windows/Linux/MacOSX] - page 611. (Read 3426975 times)
April 04, 2014, 02:59:21 PM
Guys read the last 4-5 pages , we discussed the risers and psu issues. Read it well to be sure you don't cry later.
April 04, 2014, 02:30:46 PM
You should be fine with 2 cards on one of the strands. Or most usb risers come with a sata to molex adapter so you can use sata 
sweet
April 04, 2014, 02:29:17 PM
You should be fine with 2 cards on one of the strands. Or most usb risers come with a sata to molex adapter so you can use sata
April 04, 2014, 02:22:07 PM
I ordered CORSAIR RM Series RM1000 1000W ATX12V v2.31 and EPS 2.92 80 PLUS GOLD Certified Full Modular Active PFC Power Supply http://www.newegg.ca/Product/Product.aspx?Item=N82E16817139057
Also ordered 4 X GIGABYTE GV-N75TWF2OC-2GI GeForce GTX 750 Ti 2GB 128-Bit GDDR5 PCI Express 3.0 HDCP Ready Video Cards http://www.newegg.ca/Product/Product.aspx?Item=N82E16814125511 I have not ordered the rest of the build yet as I am waiting on a paycheck.
Also ordered 4 X GIGABYTE GV-N75TWF2OC-2GI GeForce GTX 750 Ti 2GB 128-Bit GDDR5 PCI Express 3.0 HDCP Ready Video Cards http://www.newegg.ca/Product/Product.aspx?Item=N82E16814125511 I have not ordered the rest of the build yet as I am waiting on a paycheck.
the RM1000 is the same one i have. plenty of peripheral slots for cards. As an idea, the package you get with cables will come with i believe 3 cables for molex, and a few cables for sata
use one cable for each just to be safe, expensive psu and all. so 1 gpu per strand connected into the psu
also if you choose to, the psu will come with a corsair link cable. connect it to a spare motherboard usb header, install the corsair link program and it will tell you how much current your pulling through the 12v rail.
good idea of how much power your using. for power usage, use this formula
12 x Reported current = Watts used per hour
as an example
12V x 13A = 156W
READ THIS
The psu fan will NOT spin atall until it hits 400W loads
it may never hit that amount so do not worry about it
Great info! Thanks. Since I have 4 cards and only 3 molex come with it I will have to get another molex. Is there a specific type of molex that I need? There is a local store that sells them I believe.
Thanks again.
April 04, 2014, 02:10:54 PM
I am not sure if its gen 1/2/3 , how can i check?
mother board ram timing --> how do i check / change ? and what are the right settings?
All this information is located in the bios and is where you change these settings if needed.
You can also install third party software to easily find this info; CPU-Z http://www.cpuid.com/softwares/cpu-z/versions-history.html and GPU-Z http://www.techpowerup.com/downloads/SysInfo/GPU-Z/
GPU-Z will show what the PCI-Express Bus Interface is currently running at.
You can find the ram timings under the Memory tab in CPU-Z. It will read something like 9-9-9-24. This should match what your ram modules are designed to run at. You can also find your ram manufacture and model info under the SPD tab.
I had a 6x270 rig where the H81 BTC bios set the timings to AUTO and it was choosing wild timings for my ram. Could not get six cards running till the timings were set correctly.
What GTX cards are you using?
April 04, 2014, 01:55:25 PM
I ordered CORSAIR RM Series RM1000 1000W ATX12V v2.31 and EPS 2.92 80 PLUS GOLD Certified Full Modular Active PFC Power Supply http://www.newegg.ca/Product/Product.aspx?Item=N82E16817139057
Also ordered 4 X GIGABYTE GV-N75TWF2OC-2GI GeForce GTX 750 Ti 2GB 128-Bit GDDR5 PCI Express 3.0 HDCP Ready Video Cards http://www.newegg.ca/Product/Product.aspx?Item=N82E16814125511 I have not ordered the rest of the build yet as I am waiting on a paycheck.
Also ordered 4 X GIGABYTE GV-N75TWF2OC-2GI GeForce GTX 750 Ti 2GB 128-Bit GDDR5 PCI Express 3.0 HDCP Ready Video Cards http://www.newegg.ca/Product/Product.aspx?Item=N82E16814125511 I have not ordered the rest of the build yet as I am waiting on a paycheck.
the RM1000 is the same one i have. plenty of peripheral slots for cards. As an idea, the package you get with cables will come with i believe 3 cables for molex, and a few cables for sata
use one cable for each just to be safe, expensive psu and all. so 1 gpu per strand connected into the psu
also if you choose to, the psu will come with a corsair link cable. connect it to a spare motherboard usb header, install the corsair link program and it will tell you how much current your pulling through the 12v rail.
good idea of how much power your using. for power usage, use this formula
12 x Reported current = Watts used per hour
as an example
12V x 13A = 156W
READ THIS
The psu fan will NOT spin atall until it hits 400W loads
it may never hit that amount so do not worry about it
April 04, 2014, 01:50:39 PM
Will using, say, a 1000W PSU hurt? Is too much a bad thing? I already ordered it.
you will lose a tiny amount of power efficiency (probaby 2%) but aslong as your power price per KwH isn't stupid it wont make too much of a different.
Which 1000W did you order? i just replaced my old psu with a RM1000 and it made a huge difference
as an example, 2% * 1000W = 20W an hour
in a year you would be using an extra 175.KwH which even at $0.20 per KwH its only an extra cost of $35
so yes its $35 a year more expensive but your psu is under less stress and in theory should last longer
I ordered CORSAIR RM Series RM1000 1000W ATX12V v2.31 and EPS 2.92 80 PLUS GOLD Certified Full Modular Active PFC Power Supply http://www.newegg.ca/Product/Product.aspx?Item=N82E16817139057
Also ordered 4 X GIGABYTE GV-N75TWF2OC-2GI GeForce GTX 750 Ti 2GB 128-Bit GDDR5 PCI Express 3.0 HDCP Ready Video Cards http://www.newegg.ca/Product/Product.aspx?Item=N82E16814125511 I have not ordered the rest of the build yet as I am waiting on a paycheck.
April 04, 2014, 01:45:02 PM
Oh you mean the €0.22 per kWh they charge in The Netherlands?
Of which €0.09 is the ACTUAL energy price?
Of which €0.09 is the ACTUAL energy price?
exactly that
at the moment im paying £0.135 per KwH here in the uk, so about €0.16
April 04, 2014, 01:42:45 PM
Will using, say, a 1000W PSU hurt? Is too much a bad thing? I already ordered it.
you will lose a tiny amount of power efficiency (probaby 2%) but aslong as your power price per KwH isn't stupid it wont make too much of a different.
Which 1000W did you order? i just replaced my old psu with a RM1000 and it made a huge difference
as an example, 2% * 1000W = 20W an hour
in a year you would be using an extra 175.KwH which even at $0.20 per KwH its only an extra cost of $35
so yes its $35 a month more expensive but your psu is under less stress and in theory should last longer
Of which €0.09 is the ACTUAL energy price?
April 04, 2014, 01:36:44 PM
Will using, say, a 1000W PSU hurt? Is too much a bad thing? I already ordered it.
you will lose a tiny amount of power efficiency (probaby 2%) but aslong as your power price per KwH isn't stupid it wont make too much of a different.
Which 1000W did you order? i just replaced my old psu with a RM1000 and it made a huge difference
as an example, 2% * 1000W = 20W an hour
in a year you would be using an extra 175.KwH which even at $0.20 per KwH its only an extra cost of $35
so yes its $35 a year more expensive but your psu is under less stress and in theory should last longer
April 04, 2014, 01:36:37 PM
Run 3 and see what your cpu usage is, and see what speed the last card runs at when you connect it
looking weird now,
third card getting slower than other (i run stock clock)
i think this not because the riser, every card i install on last slot(directly to board/riser) always slower
btw, i use forceware 335.23 and cudaminer-2014-02-28
Try removing one GOOD card and see if the BAD card hashrate goes up, if it does there's just an issue with PCIe bandwidth.
April 04, 2014, 01:34:34 PM
Even with the 2 molex connectors on the baord, they simply dont provide enough power for 6 cards
I am in the process of doing my first mining rig build and you have been a big help thus far. I thank you for that. However I do not know the best way to put it all together. I tried searching but found no good source. Do you have one? Once I can get a process down I intend to build 3 or 4 of them. All of my rigs will be 4 cards. Starting with GIGABIT 750TIs for my first. I see it says 400W in the specs so does that mean that I need a 1600 WATT PSU? Sorry but I am rather much a noob at this.
Ask away
My cards overclocked are using 52W each, it depends on the rest of your system but a 750W psu is more then enough. Just make sure its a good quality psu
I appreciate that
I intend to use quality components.
Will using, say, a 1000W PSU hurt? Is too much a bad thing? I already ordered it.
April 04, 2014, 01:31:57 PM
Even with the 2 molex connectors on the baord, they simply dont provide enough power for 6 cards
Ah the powered vs unpowered debate. Well I'll say unpowered risers with pro btc works with my 6 x R7 240 rig.
Also,
http://cryptomining-blog.com/1276-first-impressions-from-a-6-card-mining-rig-using-geforce-gtx-750-ti-gpus/
Even with the 2 molex connectors on the baord, they simply dont provide enough power for 6 cards
I am in the process of doing my first mining rig build and you have been a big help thus far. I thank you for that. However I do not know the best way to put it all together. I tried searching but found no good source. Do you have one? Once I can get a process down I intend to build 3 or 4 of them. All of my rigs will be 4 cards. Starting with GIGABIT 750TIs for my first. I see it says 400W in the specs so does that mean that I need a 1600 WATT PSU? Sorry but I am rather much a noob at this.
Check that link. In the comments, someone used PSU Corsair CS750M 750W.
April 04, 2014, 01:28:54 PM
Even with the 2 molex connectors on the baord, they simply dont provide enough power for 6 cards
I am in the process of doing my first mining rig build and you have been a big help thus far. I thank you for that. However I do not know the best way to put it all together. I tried searching but found no good source. Do you have one? Once I can get a process down I intend to build 3 or 4 of them. All of my rigs will be 4 cards. Starting with GIGABIT 750TIs for my first. I see it says 400W in the specs so does that mean that I need a 1600 WATT PSU? Sorry but I am rather much a noob at this.
Ask away
My cards overclocked are using 52W each, it depends on the rest of your system but a 750W psu is more then enough. Just make sure its a good quality psu
As an idea, i have 3 GTX 750Ti's, a GTX 780, a 69W TDP cpu, and full watercooling loop, total power usage is 500W at the wall. so a 750W psu is plenty
April 04, 2014, 01:27:08 PM
Even with the 2 molex connectors on the baord, they simply dont provide enough power for 6 cards
I am in the process of doing my first mining rig build and you have been a big help thus far. I thank you for that. However I do not know the best way to put it all together. I tried searching but found no good source. Do you have one? Once I can get a process down I intend to build 3 or 4 of them. All of my rigs will be 4 cards. Starting with GIGABIT 750TIs for my first. I see it says 400W in the specs so does that mean that I need a 1600 WATT PSU? Sorry but I am rather much a noob at this.
April 04, 2014, 01:14:55 PM
Even with the 2 molex connectors on the baord, they simply dont provide enough power for 6 cards
April 04, 2014, 01:04:31 PM
This wasn't addressed to me but is relevant anyway.
4GB Ram
Risers are ribbon non-powered, all 1-16x risers.
UPDATE: When plug in 6 cards, i only detects 5 --> all 6 card fans r running.
Tried plugging only 3, but hashrates remained at 10, 13 and 45 for each of the 3 cards.
From what I've read, 4GB of RAM may not be enough because you are running windows (works fine with Ubuntu). Since it is pro btc, you have the two molex supplemental power to the mobo, so unpowered risers should be fine (unless you aren't powering those two molex connectors). Have you tried switching your risers? What is your PSU?
April 04, 2014, 12:49:57 PM
Your running 6 cards being powered directly off the motherboard? Honestly thats a but too much power to go through the mobo
April 04, 2014, 12:43:01 PM
I'm using Cudaminer for the 6x 750Ti running on an ASRock h81 pro-btc motherboard, and using windows 7.
I can't get the last card on my 16x pci-e slot to work while the other 5 works, and I'm only getting 450 khs for 5 cards. Am I missing smth??
Help!
I can't get the last card on my 16x pci-e slot to work while the other 5 works, and I'm only getting 450 khs for 5 cards. Am I missing smth??
Help!
Based on my experience with prior cases, I'd say the low 450 kH/s is probably caused by running cudaminer with the -H 1 switch. Try -H 2 (which is the default by the way).
No idea about the 6th card. Change the type of riser? If using a riser on the 16x slot, make sure the VGAPRESENCE pin is shorted?
Christian
Thanks Christian.
Already using -H 2. These are my settings:
cudaminer.exe --algo=scrypt:2048 -o stratum+tcp://east1.us.stratum.dedicatedpool.com:3367 -u yourworker.1 -p password -i 0 -l T10x20 -C 1 -H 2
What is VGAPRESENCE pin? And how do I do that? What's it for?
Does the 16x slot work with less than six cards installed?
Does the riser or #6 card work in any other 1x slot?
Is the 16x slot set to Gen1, Gen2, or Gen3?
Is the motherboard ram set to the correct timing?
Newer USB risers have the sensing pin short built into the circuit board, so you shouldn't have to a run shorting wires if you are using those.
Does the riser or #6 card work in any other 1x slot?
Is the 16x slot set to Gen1, Gen2, or Gen3?
Is the motherboard ram set to the correct timing?
Newer USB risers have the sensing pin short built into the circuit board, so you shouldn't have to a run shorting wires if you are using those.
all 6 cards work, only card on the 16x slot.
I am not sure if its gen 1/2/3 , how can i check?
mother board ram timing --> how do i check / change ? and what are the right settings?
with this many cards realistically we need to know the following;
What cpu are you running?
How much memory?
What PCI-E versions are the cards running on? (1.1 2.0 3.0)
What type of risers do you have? (Ribbon, Ribbon Powered, USB Powered)
What cpu are you running?
How much memory?
What PCI-E versions are the cards running on? (1.1 2.0 3.0)
What type of risers do you have? (Ribbon, Ribbon Powered, USB Powered)
This wasn't addressed to me but is relevant anyway.
4GB Ram
Risers are ribbon non-powered, all 1-16x risers.
UPDATE: When plug in 6 cards, i only detects 5 --> all 6 card fans r running.
Tried plugging only 3, but hashrates remained at 10, 13 and 45 for each of the 3 cards.
April 04, 2014, 12:10:59 PM
So... every card you try is slower, so that rules out the riser? Can you not switch risers? I will say I've never had a riser make a card seem slower, but I have had a riser make a card seem to not work.
no he is saying any card on one slot is having the issue, connected direct or through risers. which puts it down to pci-e bandwidth
Yea I just realized that sorry. I got confused with the other post using the pro btc motherboard. What mobo is this one? Yup, sounds like a pci-e bandwidth issue to me...
Try using 1x to 16x risers in your other slots except the first one even if they are 16x slots.
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