Topic: CCminer(SP-MOD) Modded NVIDIA Maxwell / Pascal kernels. - page 822. (Read 2347664 times)

For a 6x 750ti rig you only need a 500W psu. You get a gold rated for 0.1BTC

Man... I pay 110 euro for Chieftec 850 bronze here, and 135 for same but gold

less than 0.1btc ?? your bicycle ? (or are you planning on a large increase of btc price ?)

And changing bronze PSU for gold one will give 5-10 % on efficiency. And that cost less than 0.1 BTC :-)

If you switch to windows, run with the fastest of the sp-mod opensource miner, and overclock your cards (stable)

your hash/watt can improve as much as:

Lyra2v2 +62%
Quark +34%

This fork is optimized for windows 64bit. (x86 builds). Works on linux too, but sometimes slower.

There is a difference in the different 750ti cards, but most of them overclock very nicely.

You can get 7MHASH@quark with the latest public miner on the EVGA cards with a light overclock. @50watt. (win32 builds windows release 78).
You can get 5MHASH@lyra2v2 with the latest public miner on the EVGA cards with a light overclock. @43watt. (win32 builds windows release 78).

QUARK:  116Kh/Watt    (average card power consumption, at the wall, including %computer: 60W)
Lyra2v2: 116Kh/Watt   (average card power consumption, at the wall, including %computer: 53W)

... and you missed my last sentence  
there isn't a ROI on code per se, but it is up to me to decide if it is worth (money-wise/time-investment) to release new code.
New coding technique, new developpement are lost to me, as soon as they are released, I lose the advantage I have over the competition. (take an industry they publish patent over new tech long in advance, in order they do not lose the time they spent in R&D regardless if they use it in a new product or not). Hence, what I do here is more or less the same.
(that was exactly what I said in my last sentence, in my previous message you forgot to read  )

ROI on developed software: developing takes time and time is money (I could do something else and get paid for it). So yes, there is "roi".
I surely don't expect to roi on my opensource software, and am very far from it. Different story with private works.

And you missed the part where if you don't release anything you're neither profiting nor helping anyone else... As you've done in the last six months.

There is no 'ROI' on code. It's not the same thing as hardware. You can sell as many copies as you want and the demand for it is only reduced by the desire to want it. So if there is a competing product or they can get it for free. But since there are 'no' products available, you aren't really accomplishing anything.

This is why a open market for kernels would be a really great idea for alt-coin mining. Hopefully Nicehash will eventually do this. It wouldn't require that much development time.


Feathercoin...


Too bad there aren't good miners to buy.

As mining is in the shitter, donations are low as well. I just gave you 5% in the quark algo and 5% in the lyra2v2 algo on compute 5.2 devices.

5% increase in the hashrate with the same watt doesn't seem to be much, but your profit will increase with more than 5%

If your powercost is 90% of the Mining revenue, a 5% faster miner will give you 30% higher profit.

Please donate to get more hash. (and recieve private profitable miners if you reach 0.1 BTC (spreadcoin/penta/cryptonight (0.1 BTC each))

The 970 can mine more efficient if you lower the TDP of the card with the nvidia-smi tool. The gigabyte G1 970 has a tdp of 250W while the reference card has 150W. Instead of selling the card you can lower the TDP to 180W.

There was such a discussion, was it really more than 40 pages ago?

It came down to 750ti vs 970 with the 970 getting some credit for lower rig overhead, it needs fewer rigs to produce the
same hash rate as 750ti's.

The 750ti shines on lyra2v2 giving it a clear edge on that algo, IMO. Although the 750ti is generally
thought to be a more efficient card it's edge isn't so clear at the system level with most algos.

Your thoughts welcome.

Would a dummy plug (PSU tester) on the 24 pin solve the problem you describe?

nice to see you back around here induktor!

since Quark mining is right about at the cost it takes to mine, i only have one or two rigs going, mostly for space heaters since the temp is dropping nicely outside.

all the other algos are in the shitter. i think BTC needs a nice big pump.

Sorry for the double post but wanna keep it separated

Several pages back i read that some of you where concern about using several PSU's in parallel.

I can help, if you like, PM me, i have extensive experience doing it, i assembled a farm for a client about 2 years ago (which is still today operating) with dual PSU's, the reason for this was because my rigs where using at the time 900W at the wall each.

back then a 1000W PSU costed an arm an a leg, and even so, i will be using it at 90% capacity 24/7 cycle, not a good idea!.

not even thinking about the AX1200, which is impossible to buy here, very expensive!, but 850W PSU where cheap.
so i bought several from different brands and models, and found the proper combination.
the key is to find a PSU that regulates from the 12V line and not from the 5V, like the cheap ones.
99% of the 750W or less regulates at the 5V line and are not good.

You can see it easily by looking inside, if you see a vertical board with VRMs then the PSU regulate on 12V line, and then converts them to 5V and 3.3v this is the PSU that can run in parallel.

why?, well, if you use something like the add2psu the first PSU will use 5V and 3.3V because it is connected to the motherboard, but the second one, and this is the tricky one, will only use 12V, since 5V is not loaded (and non-VRM PSUs are not designed to be used like this) the second PSU will be unstable, and voltage will swing up and down all the time.

this is a very serious risk for the GPU because, even when most of the time the voltage swing will be within GPU VRM input specs, there are conditions when this is not the case, example a micro-power outage and during power up or power down of the rig.

i have tested this myself with proper instruments (i do electronics engineering for a living) so, to not make this any longer, the second PSU (the one is not connected to the motherboard) MUST be dual conversion PSU (with separate VRM and regulation at the 12V side).

I have seen a lot of people that trust on server power suplies but check if they really regulates on the 12V line, some of them are not!!, if not sure, tested it under different loads and measure voltage swing over time to be sure!, an electronic load is fantastic for this but i know most people won't have that, so you will have to be creative, i started testing them using car light bulbs (the big ones!) hehe.

PSU's I know do this (from memory, what i remember in the tests 2 years ago) are dual conversion and are extremely stable.
Sentey SDP850SS  <- my favorite because of price!
Sentey LTP1000
Sentey MBP1000
Sentey HBP1100
Corsair AX1200

finally i didn't use myself the ADD2PSU because it was impossible to find here, so i build it myself, it's easy, very few components, PM me for details.

Hello!
I was reading the last 40 pages (i've been out a while) and I was wondering, why is there is so little info about power efficiency?.
isn't the most important factor in mining nowadays?, specially today that is barely profitable?
power here is getting expensive fast, and unless i found the most efficient way, i will be out of business soon!.

around august I decide to sell all my GTX 970 G1's not because they weren't fast, but because of power consumption was ridiculous when compared with the rigs using 750ti.

even now, I have several 7950 but don't use them because, again, power efficiency.

my rigs (all 750Ti) is the final result after so many buy/try/sel/buy/try/sel cycles until i finally found the most power efficient rigs possible (not sure if this is true today because of the new r9 nano card, would love to see comment about this)

so, here is my data, I will love to know about yours and compare notes!.

cards are almost all Gigabyte 750Ti (and couple of evga's ftw), stock clocks, lubuntu64 cuda 6.5 DRV 346.59 ccminer 1.5.74  (the best one so far for this config) no hard drives, os runs from 16gb flash usb sticks.

QUARK:  86.4Kh/Watt    (average card power consumption, at the wall, including %computer: 70W)
LYRA2V2:  71.6Kh/Watt  (average card power consumption, at the wall, including %computer: 60W)

PSU used, dual conversion, 80 Plus bronze at 40% load.
what is yours?.

guess you forgot to read (as usual) what you are quoting...
if it isn't profitable to release then it isn't released, and the fast code may be eventually used elsewhere
(other coins, other algorithms) to keep the edge... hence no hurry as far as I am concerned

Looks like about 250 kh/s more with my 2 980ti's and 2 750ti's rig.
Hard to tell will run it overnight to see if anything changes to that.

Just wait till it's unprofitable then release it for free or for a very low price. I bet that will appeal to the majority of miners and makes sure you maximize your profits! XD

You have to consider you guys aren't the only ones making miners. Private kernels devs exist, especially for big farms. Whole reason people still mine x11.