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Title: 2x 6870 - what are your settings? Post by: innervisi0nn on June 10, 2011, 03:20:33 AM Hi All,
I just got a new pair of 6870's today. Been messing around with MSI Afterburner, and for some reason I cant get more than 300 megahashes per card for this. What settings are you all using? phoenix -u (user/pass left out..duh) -k phatk DEVICE=0 VECTORS AGGRESSION=12 BFI_INT WORKSIZE=256 FASTLOOP=false What memclock/core you guys doing? Title: Re: 2x 6870 - what are your settings? Post by: OgNasty on June 10, 2011, 05:14:53 AM 300Mhash/s per card seems about right to me. Are they hooked up with CrossfireX or a dummy plug?
Title: Re: 2x 6870 - what are your settings? Post by: innervisi0nn on June 10, 2011, 05:22:06 AM 300Mhash/s per card seems about right to me. Are they hooked up with CrossfireX or a dummy plug? It sucks @ 300 mhash/s. the 5830 is $150 and does 302 mhash/s and the 6870 cost me $209 (very unstable, I think i got it working at 1000/400 with 305 mhash/s) Im using HDMI to my TV for 1 card, dummy for 2nd. Wonder what the diff btw voltage is. 6870 is running 55-56 celcius compared to my 5830 running 62-64 celcius. (6870 much cooler at this point) plus I have it in a HAF case with 3 extra fans. Title: Re: 2x 6870 - what are your settings? Post by: snoopy on June 10, 2011, 05:39:25 PM I've got my 2x6870's clocked at 975 core and each gets me 297 MHash/sec using hashkill on 64-bit ubuntu. From what I've seen/read, your numbers are pretty close to optimal at that clock speed on these cards. What kind of 6870's do you have?
Title: Re: 2x 6870 - what are your settings? Post by: BiggieJohn on June 10, 2011, 05:54:44 PM thats what I'm using. GPU at 1010Mhz, mem at 1100Mhz.
I'm getting ~300 MH/sec with those settings. temps are 72-74F I need to play with MSi afterburner and see if i can do better Title: Re: 2x 6870 - what are your settings? Post by: innervisi0nn on June 10, 2011, 06:36:45 PM I've got my 2x6870's clocked at 975 core and each gets me 297 MHash/sec using hashkill on 64-bit ubuntu. From what I've seen/read, your numbers are pretty close to optimal at that clock speed on these cards. What kind of 6870's do you have? 1000/400 i have 2 XFX 6870's in my HAF 922 case with extra 3 fans, 1x 200mm, 1x140 mm, 1x 120mm and im kept cool at 55 celcius. 70% fan thanks guys! Title: Re: 2x 6870 - what are your settings? Post by: PhrozenArmadillo on June 10, 2011, 07:02:29 PM Just ordered all of the components for my new rig with 6870's. Hoping to get her running after the weekend.
Title: Re: 2x 6870 - what are your settings? Post by: willphase on June 10, 2011, 07:21:39 PM 6870s should be getting more than 300 - I'm getting around 420 on mine - and I'm only running at 930Mhz clock to keep the temperature down.
Disable crossfire. Use the official amd clock tool AMD GPU Clock tool (http://I had exactly the same problem. I ended up using the [url=http://www.techpowerup.com/downloads/1641/AMD_GPU_Clock_Tool_v0.9.26.0_For_HD_5870.html) and that let me change everything. W Title: Re: 2x 6870 - what are your settings? Post by: BiggieJohn on June 10, 2011, 07:34:27 PM 6870s should be getting more than 300 - I'm getting around 420 on mine - and I'm only running at 930Mhz clock to keep the temperature down. Disable crossfire. Use the official amd clock tool AMD GPU Clock tool (http://I had exactly the same problem. I ended up using the [url=http://www.techpowerup.com/downloads/1641/AMD_GPU_Clock_Tool_v0.9.26.0_For_HD_5870.html) and that let me change everything. W I was getting the same before I cleaned up the KVM disaster and added the crossfire bridge cables. what OS and miner are you running. and what manufacture are the GPU's ? Title: Re: 2x 6870 - what are your settings? Post by: willphase on June 10, 2011, 07:43:44 PM I was getting the same before I cleaned up the KVM disaster and added the crossfire bridge cables. what OS and miner are you running. and what manufacture are the GPU's ? XFX HD 5870 x2 no crossfire Windows 7 x64 phoenix miner with phatk kernel with params -k phatk DEVICE=1 BFI_INT VECTORS AGGRESSION=11 FASTLOOP=false WORKSIZE=256 AMD GPU clock tweak tool (http://www.techpowerup.com/downloads/1641/AMD_GPU_Clock_Tool_v0.9.26.0_For_HD_5870.html) manually tweaking to 939Mhz clock, 343Mhz Memory, stock voltage. Seeing 420MH/s at 65 degreesC atm... might push the clock speed higher... W Title: Re: 2x 6870 - what are your settings? Post by: jonnynogood on June 10, 2011, 07:49:37 PM I was getting the same before I cleaned up the KVM disaster and added the crossfire bridge cables. what OS and miner are you running. and what manufacture are the GPU's ? XFX HD 5870 x2 no crossfire Windows 7 x64 phoenix miner with phatk kernel with params -k phatk DEVICE=1 BFI_INT VECTORS AGGRESSION=11 FASTLOOP=false WORKSIZE=256 AMD GPU clock tweak tool (http://www.techpowerup.com/downloads/1641/AMD_GPU_Clock_Tool_v0.9.26.0_For_HD_5870.html) manually tweaking to 939Mhz clock, 343Mhz Memory, stock voltage. Seeing 420MH/s at 65 degreesC atm... might push the clock speed higher... W are you using 5870's or 6870's? i dont think 6870's can hit 4xx Mh no matter what you do Title: Re: 2x 6870 - what are your settings? Post by: innervisi0nn on June 10, 2011, 07:57:58 PM I was getting the same before I cleaned up the KVM disaster and added the crossfire bridge cables. what OS and miner are you running. and what manufacture are the GPU's ? XFX HD 5870 x2 no crossfire Windows 7 x64 phoenix miner with phatk kernel with params -k phatk DEVICE=1 BFI_INT VECTORS AGGRESSION=11 FASTLOOP=false WORKSIZE=256 AMD GPU clock tweak tool (http://www.techpowerup.com/downloads/1641/AMD_GPU_Clock_Tool_v0.9.26.0_For_HD_5870.html) manually tweaking to 939Mhz clock, 343Mhz Memory, stock voltage. Seeing 420MH/s at 65 degreesC atm... might push the clock speed higher... W I think you confused us. The 6870 cant go more than 330 mhash/s. You have a 5870 right? Title: Re: 2x 6870 - what are your settings? Post by: willphase on June 10, 2011, 07:59:54 PM are you using 5870's or 6870's? i dont think 6870's can hit 4xx Mh no matter what you do sorry - you're right - I'm running 5870s, next time I'll read the topic closer :) W |