LO I can get 282Mh/s + with an OCed 6870 and 235+ Mh/s on stock
What version of ATI Stream are you using? I'm on 2.3 but I'm going to try an older version because I should be getting 300Mh/s
I'm on 2.2, never tried any other ones
Topic: Software to optimize gpu performance? (Read 4776 times)
What version of ATI Stream are you using? I'm on 2.3 but I'm going to try an older version because I should be getting 300Mh/s
I'm on 2.2, never tried any other ones
LO I can get 282Mh/s + with an OCed 6870 and 235+ Mh/s on stock
What version of ATI Stream are you using? I'm on 2.3 but I'm going to try an older version because I should be getting 300Mh/s
I am only able to get around 230 MH/s with my 6950 2GB (running 100% stock) with most every combination of -v and -w 64, 128, 256...
I may try unlocking the extra shaders and/or OCing tonight and see how it goes.
I may try unlocking the extra shaders and/or OCing tonight and see how it goes.
LO I can get 282Mh/s + with an OCed 6870 and 235+ Mh/s on stock
I am only able to get around 230 MH/s with my 6950 2GB (running 100% stock) with most every combination of -v and -w 64, 128, 256...
I may try unlocking the extra shaders and/or OCing tonight and see how it goes.
I may try unlocking the extra shaders and/or OCing tonight and see how it goes.
On the Windows box, I use Sapphire TRIXX...controls the fan well, doesn't require special unlocking techniques, but has a PITA registration requirement to download. Slight overclock gets me ~295Mh/sec on a single HD6950 1GB, 850/1280, -v -w 128.
That's weird. On my 6950 I only get 150 Mh with -v -w 128, but 310 Mh with -w 64 -f 1 and no -v. You can save some power by lowering the memory speed. I'm running memory at 155 Mhz with no loss in Mh. Perhaps you have one of the new 6950s with 1GB RAM, or you haven't unlocked the shaders?With -w 64, I get ~250Mh/sec.
With -v -w 64, I get ~295Mh/sec, although the deviation seems to be less and peaks higher than -v -w 128, so I think I'll stick with that now.
Also how are you running memory so low? Do you mean 1155? Or is it really that low? (Edit: Seems to be 1155. At 1100 I start losing ~5Mh/sec. At 1150 I get the same as 1280, so it's sticking there.)
There is very little performance increase in overclocking memory to be worth it imo.
Also how are you running memory so low? Do you mean 1155? Or is it really that low? (Edit: Seems to be 1155. At 1100 I start losing ~5Mh/sec. At 1150 I get the same as 1280, so it's sticking there.)
No, I really meant 155, but I was a little off. It's at 160. I start Afterburner, put it to the lowest memory clock, exit Afterburner, rinse, repeat. I noticed I got a little higher Mhash with higher memory frequency if I specify -v, but it's still a lot slower than with no -v. I use Stream 2.2 and 64 bit W7. On the Windows box, I use Sapphire TRIXX...controls the fan well, doesn't require special unlocking techniques, but has a PITA registration requirement to download. Slight overclock gets me ~295Mh/sec on a single HD6950 1GB, 850/1280, -v -w 128.
That's weird. On my 6950 I only get 150 Mh with -v -w 128, but 310 Mh with -w 64 -f 1 and no -v. You can save some power by lowering the memory speed. I'm running memory at 155 Mhz with no loss in Mh. Perhaps you have one of the new 6950s with 1GB RAM, or you haven't unlocked the shaders?With -w 64, I get ~250Mh/sec.
With -v -w 64, I get ~295Mh/sec, although the deviation seems to be less and peaks higher than -v -w 128, so I think I'll stick with that now.
Also how are you running memory so low? Do you mean 1155? Or is it really that low? (Edit: Seems to be 1155. At 1100 I start losing ~5Mh/sec. At 1150 I get the same as 1280, so it's sticking there.)
on my HD4830 I have better result with down clocked mem. 
Why?
I was watching for hashing about 10 minuts, then it become stable Why? 
on my HD4830 I have better result with down clocked mem. Why?
Why? On the Windows box, I use Sapphire TRIXX...controls the fan well, doesn't require special unlocking techniques, but has a PITA registration requirement to download. Slight overclock gets me ~295Mh/sec on a single HD6950 1GB, 850/1280, -v -w 128.
the MSI unlocking technique is just editing a text file lol o.O
I suffer from loss of Mh when I go lower than 300 in mem clocks
On the Windows box, I use Sapphire TRIXX...controls the fan well, doesn't require special unlocking techniques, but has a PITA registration requirement to download. Slight overclock gets me ~295Mh/sec on a single HD6950 1GB, 850/1280, -v -w 128.
That's weird. On my 6950 I only get 150 Mh with -v -w 128, but 310 Mh with -w 64 -f 1 and no -v. You can save some power by lowering the memory speed. I'm running memory at 155 Mhz with no loss in Mh. Perhaps you have one of the new 6950s with 1GB RAM, or you haven't unlocked the shaders?
On the Windows box, I use Sapphire TRIXX...controls the fan well, doesn't require special unlocking techniques, but has a PITA registration requirement to download. Slight overclock gets me ~295Mh/sec on a single HD6950 1GB, 850/1280, -v -w 128.
You could try PowerStrip for overclocking. (Windows)
But usually the official driver software is good enough.
But usually the official driver software is good enough.
depends on the card... -v -w 128 -f 0 is the perfect thing for 6870s
I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
I was randomly able to decrease the clock speeds below 775/1050 on my 6870 at one time, but now I can't. Any idea how to allow the slider to slide lower?I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
n windows there is msi afterburner
1st unable unofficial Overclocking (google it) on MSI afterburner. After, set the clocks at what you want and click apply, if the slider doesn not go as low/high as you want, put it at maximum or minimum for now. close MSI afterburner. Reopen, notice that you can lower or put higher clocks then before as the new clocks you just set become the MIDDLE of the slider.
depends on the card... -v -w 128 -f 0 is the perfect thing for 6870s
I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
I was randomly able to decrease the clock speeds below 775/1050 on my 6870 at one time, but now I can't. Any idea how to allow the slider to slide lower?I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
n windows there is msi afterburner
depends on the card... -v -w 128 -f 0 is the perfect thing for 6870s
I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
I was randomly able to decrease the clock speeds below 775/1050 on my 6870 at one time, but now I can't. Any idea how to allow the slider to slide lower?I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
n windows there is msi afterburner
I think it's called Gentoo.
http://funroll-loops.info/ depends on the card... -v -w 128 -f 0 is the perfect thing for 6870s
I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
I was randomly able to decrease the clock speeds below 775/1050 on my 6870 at one time, but now I can't. Any idea how to allow the slider to slide lower? I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
Ok cool, I knew some were over-clocking, but wasn't sure if there were other parameters that could be tweaked
depends on the card... -v -w 128 -f 0 is the perfect thing for 6870s
I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
What software are you using to pass these parameters?
poclbm... in a batfile open poclbm.exe -v -w 128 -f 0 (and then the user and pass thing and device thing)
Ok cool, I knew some were over-clocking, but wasn't sure if there were other parameters that could be tweaked
depends on the card... -v -w 128 -f 0 is the perfect thing for 6870s
I even managed to get 280Mhash/s (vs default 230Mhash/s) by Ocing to 1040 core 300 mem
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