Re: Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v10.0 (Windows/Linux)

Since building my first rig last June, i've always had this rock-stable settings for six of my Asus Dual OC 580s 8GB Samsung memory

-cclock 1260
-mclock 2050
-cvddc 925mV
-mvddc 925mV

This yields me a constant 29.1 to 29.3 across all cards (175 total) and pulls about 1175 up to 1200w. High, I know but they go for weeks until needing a restart.

Earlier this week, I played with them again to squeeze in few more Mh. These are my settings:
-cclock 1140
-mclock 2075
-cvddc 875
-mvddc 875

They average a total of 177.5 now and cards hashes from 29.5 up to 30.0. But the best thing is they now only pull 1035w dual-mining with DCR.

Wow thats excellent results for those cards. I've checked some forums and noone was able to get those numbers.
I've tried different tweaked BIOS (even from RX480) which gave same results but nothing was stable for more than few hrs.
With blockchain driver the only stable bios was original with 1750 straps and -cvddc 1000 (28MHz).
Which BIOS do you use?

That's actually not great. Power usage could be much lower. For example I have a 4-card rig that pulls ~580W from the wall (with a bronze PSU so would prob be more like 550W with a gold). The rig pulls 80W @ idle so each card pulls about 125W under load. Stable for over 530 hours w/ over 29MH/s per card. If this were a 6-card rig it should only be pulling between 780W (gold PSU) to 830W (bronze PSU).

https://i.imgur.com/pO6WSdX.jpg

EDIT: Ahh nvm...just noticed he is dual mining DCR. Different story.

same cards giving me pain when installed 8 per rig, leftover 4 run smoothly at over 30MH. usual 1500 straps, ~850-880mv, 1180&2100 (elpida is nice these days)

EDIT: Just as I was saying a year ago: RX *70 anytime over RX *80

When I still had my 8-gpu rig consisting of MSI Gaming X 580 4gb elpidas, I'm having similar problems as you. They're smooth and all but they only hash 29.6 if all eight cards are connected.

If I only plug 4-5 cards, they hash a terrific 30.1 up to 30.3 each.

I've created a thread here, in another board and even in ethermining sub of reddit but apparently, not too many miners have 8-gpu rigs to contribute their thoughts.

I'm in the process of building 8x Nitro+ 580s on Saturday and I hope and pray that it's not going to be the same experience as the Gaming X's.