Bitcoin Forum

EDIT: Solution found.  See my post about 7 messages down

OK this just bugs me and I need to ask.  I have 2 rigs that mine.  Most of the cards are gtx 1060s, but each rig has gotten a new gtx 1070.  An Asus 1070 something gaming card, the other A Zotac 1070 Amp edition.  Both are factory overclocked and boast almost identical specs.

Why would the Asus average 400 sols/s Equihash, and the Zotec only 325 Sols/s?

I mean that is a huge difference for a card that is running at the same same GPU clock, same mem clock.  The only difference is the zotec is connected using a PCI riser.  But I have never noticed them cause performance issues before.  Drivers up to date, both on gen 6 intel i series processors, systems are spec'd out similarly.

Thanks for your thoughts, because I am perplexed...

Luck it is, you should check speed at miner, and try mining on flypool , it gives to you 24 average mining speed

ASUS VS Zotac... I see a difference in quality already (IMHO).

Swap cards between systems and re-test....  see if they change places.

*edit* Temps could also play a key role in this as well;  one case does better at exhausting heat, etc.

how did you clock the gpus?

msi afterburner?

If all else fails yea I will swap the cards and see.  I did use MSI afterburner to exactly match specifications, but left to its own the Zotac was almost identical in temp/clock/load already according to gpu-z and afterburner. (zotac was 1 degree cooler BUT only 67% TDP vs 92% for Asus)

I also swapped risers just in case.  No luck there either.  I have just enough room to actually install the zotac on the board, I might try that also.

But even if Zotac is a lesser brand (which honestly it feels really well made), all things being equal it should not be such a dog.  BTW I am using the same miner mining the same pool on both systems BTW, and the 1060s are running at the same speed on both.

I feel like I am missing something somehow, but... I dunno.

I believe it's GPUz that has the "ASIC quality" test?   That could also play a part... but 20% a large percentage.

Ill note on a miner that was too hot running mixed FE and aftermarket coolers;  the FE cards got lower hashrates... once cooling as adjusted they lifted back up again...

so its seeming like heat is your issue.... you gotta ventilate them pretty well.

69 degrees is the temp.  I also checked for throttling, but it isn't.  On the surface everything looks good and similar except for the stark contrast in TDP (67% vs 92%)

***UPDATE*** So I fiddled with all sorts of things. No change.  But I recall reading once that Nicehash suggests creating a very large Virtual memory page file.  Not sure why, and I never had an issue with 3 GTX1060s and 2 GTX 1050s.  But when I created a huge 24GB page file suddenly my hash rate jumped up to 390 sols/s.  (BTW ONLY the algorithms equihash and DaggerHashimodo were impacted all others were expected for a 1070)

So Why Nicehash needed so much extra virt mem for a 1070 is unknown to me.  Why low virt mem only impacted DaggerHashimodo and equihash is even more perplexing. I am only thankful I remembered something about that and tried it.

Thank you to everybody that replied with suggestions!