Topic: EWBF's CUDA Zcash miner - page 221. (Read 2164327 times)

Yeah that's why i build them like this, i got a bargain on the PSU, and also on the GPU's, allowed me to build each rig for 2.6k€ cost instead of easy 3.1/3.2k€, if i didn't had those, i would have approached things differently no doubts.

250sols with v2.0b with stock 970.

For me the sweetspot I have found is 550/650W + 450W PSU to be the cheapest. Also enough for (3+3 gtx 1070).

as usual it's about living in different country, i can't find your psu for 75 euro, they are at 120 each

Nice job EWBF! Tx 

MSI gtx970 4gb doing -- 269 sol/s

Just as good as my AMD XFX rx480 on the claymore miner.

try to change solver

Depend on the price you get, i got those psu in bulk for 75€ each, that's 150€ for 1500w of power, no need to add either 30/40€ of additionnal cabling to power everything, as i have 2x8pin gpu's it added fast.

1000w psu, when i was building those seemed to me a little too low, because i didn't knew @ the time @ how much TDP i would run them (pascal card were kinda rare in mining, so not much infos), 1000w even @ 60% that's 83% load, you lose efficiency after 50% load on a psu (about 3-5% after 50% until 80-90% depending on PSU) so the idea was to get at least 1200/1300w psu that are bare minimum 250€ here, and it would still need added cabling for an additionnal 25/30€.

EVGA 1000W is 160€ here, there is cheaper alternative @120€ like lepa, but i didn't wanted to use subpar psu to save a few bucks. Also taking the risk that 1000w would over time cost me more because of the lost efficiency (3-5% per rig that add up fast) and also give me no alternatives if i needed more power or adding one more card. Also risking electrical stability overloading specific psu rails. so 150€ worth of psu, no added cabling (aside from the 5€ psu link), stability and such, seemed @ the time, a pretty good idea, and i still think i did the right choice, to keep the cost low. And i had so far 0 hardware issue across 10 rigs (burned cable, gpu issue, and so on)

For different people, depending on their country, their own situation, electricity cost & all, things could be different, just giving out my experience, calculations and thinkings @ that time, not saying people should do the same.


Well so far 60 cards, rock stable. so crossing finger


Use miner --help, you will see the log option, for now you can't choose a log name, only log level, that will create a miner.log.

EVGA 1070 FTW not good choise for mining.
I used same card for 4 monthes and they are nearly fired.

6x1060 Palit 3GB +150/+650
ver 0.1.0b - 1670
ver 0.2.0b - 1540

seems like big difference to me

How the --log option works? How should i add it to make a logfile.txt for example?

seems like autobenchmarking is not good...benchmark choose solver 1 which gives me 1350 sols from 3 cards.maтually set solver 0 - 1400 sols...

choosing 2 x 750w cost more than a single 1000watt, like 33% more, yeah you get the cables but i don't think it's worth it anyway...

with 1000watt i can run 6 x 1070

Hey,

Ok so my 10 rigs are like so

6 x EVGA geforce GTX 1070 FTW Gaming ACX 3.0 - 8 GB (2x8pin power)
6x PCI-E Riser USB and powered version 006c (6pin power)
2x FSP Fortron Hydro G 750 - 750W
Intel Celeron G1820 2.7 GHz
ASRock H81 Pro BTC R2.0
Kingston SSDNow UV400 - 120 Go
HyperX Savage 8 GB DDR3 (2x4GB)
W10 anniversary edition x64
Drivers 372.19 but will upgrade to 372.33 today.

I choose dual psu rig because it doesn't take much more room, allow for dual fan cooling from below because i turned them toward the gpu's, more cables than solo psu so less money for added adapters, more power lines, more stable, consume less overall because able to hit the sweet 50% load spot that allow maximum psu efficiency, and cost 60% of the price of a 1300W psu, so money saved here too.

one psu power the whole motherboard and drives (mobo + ssd) all the motherboard added connectors for power of PCI are also on that psu, and 2x GTX 1070 + own risers + added fans
second psu power the remaining 4 gpus + their risers.

both psu load is the same (1% variance) and well splitted across all power rails.

Sweet spot running those rig is about 60% TDP (about 110w per gpus) and different overclock depending on algo, for equihash (zcash & fork) i used to run +150/+600 but with latest EWBF that exploit everything a bit better, i had to tone it down for stability @ 145/590, been stable all night across all rigs, for an added ~2.5% average more hash (~2585 > 2650sols/s) with Solver 0 and one EWBF instance.

anyone able to run the new version 2b with a multi gpu rig and add a --log and send off to th00ber on here, he is trying to add ewbf to his monitoring tool https://bitcointalksearch.org/topic/m.17538218  

EVGA GTX 950 02G-P4-2951-KR
ver 0.1.0b - 133 +100 mem
ver 0.2.0b - 139 +100 mem

I have one Giga-just oposite?
And 1070s doing a bit more on 2.0 too. 6 hours stable for now.

MSI GTX 960 Gaming X 2g no OC
ver 0.1.0b - 132 s/s
ver 0.2.0b - 129 s/s

Try plugging one card directly into the bottom PCIe slot on the Motherboard. Use the 5 4-pin molex adapters with your raisers if you can avoid using any additional adapters you should as they can just cause problems.  Also check for bios updates to see if any are related to your issue as well.  Depending on how the rest of your system draws that power supply might be a little light as well with little room for overhead and degradation.  It puts out about 1150W at the load from your video cards alone which is roughly 900W.  A general rule is to use 80% of the total power output so in your case that would only be ~959w.

That is an old story, probably risers are not powered? That mobo can do max 4 unpowered and others must be powered ( and use that molex on mobo ). Pro BTC has 2 molex's on board so can handle all 6 unpowered but even that is not reccomended. w10 must recognize all 6 cards from start if all is ok.