7970's getting under 700Kh/s Scrypt?

[Eiswolf93]

With my Asus 7970 Matrix Platinum i have the same issues, can't get over 600 kH/s.

I tried everything what i found could found in the internet, but nothing helped. is a linux system faster than a windows client?

 

[hybridkdm]

Hi just saw this post.  I have sapphire 7970 dual x video cards.  Currently using guiminer and getting 647kh/s and 622 kh/s out of them. 

Running

Core clock 930
mem clock 1355
voltage 1137

Going to mess around with them this weekend to push 700+ per card.  I have another 2 on the way also.

[tex83rb]

With my Asus 7970 Matrix Platinum i have the same issues, can't get over 600 kH/s.

I tried everything what i found could found in the internet, but nothing helped. is a linux system faster than a windows client?

 

Sir, what setting are you using? For me is starting at 510 and quickly decrease until 400 with catalyst 13.1 and cgminer 3.2.1

[2jase]

I've tried a bunch of different 7950s and the Sapphires are, by far, the best.  I know this thread is about 7970s, but maybe this'll help someone. anyway.  All numbers here are mining BTC but I've gotten similar KH/s doing scrypt.

My favorite is my Sapphire Dual-X that's doing 633GH/s with cgminer at 74C with the fan under 50%: engine=1200, mem=1050, vddc=1.169, I=7.  It ran at 1210/1060 for 637GH/s for about a week but the driver crashed needing a hard reboot so I dropped it back a bit.  

I have a Vapor-X which'll do 620MH/s (1180/1030) but crashes when I push it any faster.  The MSI Double Frozr tops out at 610MH/s and the XFX single-fan card crashes any higher than 595MH/s.  Worst of all, though, the XFX ran hot and loud because the cooling system was crap.  I'm not sure how much of a difference the Vapor-X makes but it does add about 1/4" to the thickness making it hard to fit into some cases.

Speaking of which don't forget how important the case is.  My main rig is a Coolermaster HAF that runs the cards a good 20C cooler than a plain, generic case even on its side with the side off.  If I lived in a house with a basement I'd do crate rigs with box fans but since I live in a small apartment noise and heat are key.  

[2jase]

I've tried a bunch of different 7950s and the Sapphires are, by far, the best.  I know this thread is about 7970s, but maybe this'll help someone. anyway.  All numbers here are mining BTC but I've gotten similar KH/s doing scrypt.

My favorite is my Sapphire Dual-X that's doing 633GH/s with cgminer at 74C with the fan under 50%: engine=1200, mem=1050, vddc=1.169, I=7.  It ran at 1210/1060 for 637GH/s for about a week but the driver crashed needing a hard reboot so I dropped it back a bit.  

I have a Vapor-X which'll do 620MH/s (1180/1030) but crashes when I push it any faster.  The MSI Double Frozr tops out at 610MH/s and the XFX single-fan card crashes any higher than 595MH/s.  Worst of all, though, the XFX ran hot and loud because the cooling system was crap.  I'm not sure how much of a difference the Vapor-X makes but it does add about 1/4" to the thickness making it hard to fit into some cases.

Speaking of which don't forget how important the case is.  My main rig is a Coolermaster HAF that runs the cards a good 20C cooler than a plain, generic case even on its side with the side off.  If I lived in a house with a basement I'd do crate rigs with box fans but since I live in a small apartment noise and heat are key.  

They're just about the same.  Linux draws somewhat fewer watts (CPU is less busy) and it needs less RAM but Windows usually recovers from driver crashes more gracefully.  One of my Linux boxes can be rebooted on the command-line if the driver hangs but the other needs a hardware reboot, which sucks if I'm not home.  My Windows miner can almost aways be reset by bouncing cgminer.