The 7950 Megahash thread

[Fiyasko]

So what am i doing wrong? Core 1040 mem 700
I've flipped around with the intensity obviously, Im running CGMiner 2.7.0
Im getting 468mh/s, And yet on https://en.bitcoin.it/wiki/Mining_hardware_comparison I see a guy hitting 512mh/s with a 1ghz core, Using Poclbm
When i run poclbm i get 475mh/s
Why isnt CGminer being as godly as it used to be? Do i seriously have to switch back to a different miner just to increse performance? I love CGMiner!

EDIT-I've followed some advice written below, And got the hashrate upto 493

Edit- Upgraded to Catalyst 12.8 from 12.6 and now im at 550mh/s at Core 1050
Edit3
Im using CGminer 2.9.7 now, With Diablo Kernal, Vectors 1, w256, Intensity 7 (using intensity 11 gives 6 more mh/s, but the lags not worth it)
576MH/s

[crazyates]

That does sound a little low, but not drastically. What OS/driver/SDK? Try switching kernels? CGMiner also has diabo, phatk, and diakgcn, all of which should be decent. On my 7970 I use "-v 2 -w 256 -I 9 -k diakgcn" and it works great (Win7x64SP1, 12.8, 2.7 here).

@1040MHz you should be getting close to 520MH/s.

[Fiyasko]

That does sound a little low, but not drastically. What OS/driver/SDK? Try switching kernels? CGMiner also has diabo, phatk, and diakgcn, all of which should be decent. On my 7970 I use "-v 2 -w 256 -I 9 -k diakgcn" and it works great (Win7x64SP1, 12.8, 2.7 here).

@1040MHz you should be getting close to 520MH/s.

LOL, I forgot all the important info!
64bitwin7 12.8, 2.7
How do i tell CGMiner to use a differant kernal? Whats the command line arg?
I think inside the config i can set it to a differant kernal... Im going to poke around..
THANKS!, Im pretty sure it's the kernel,

[freeAgent]

That's your rate on a 1040Mhz core clock!?!?  I get 480Mh/s on 925Mhz using --intensity 5 as my only switch.  I'm on the same OS/driver/SDK version as you are as well.  Something is very wrong with your setup.  Are you sure you're operating at 1040Mhz core (and it's stable)?

[scifimike12]

Try using Diablo kernel instead of Poclbm.  Change the intensity to 7, worksize to 256, and vectors to 1.  That should yield the greatest results.

You can change the settings by press S → W → ENTER.  That will great a configuration file so you won't need to re-enter the same settings as before.

[Fiyasko]

That's your rate on a 1040Mhz core clock!?!?  I get 480Mh/s on 925Mhz using --intensity 5 as my only switch.  I'm on the same OS/driver/SDK version as you are as well.  Something is very wrong with your setup.  Are you sure you're operating at 1040Mhz core (and it's stable)?

Hellyeah it's stable, It's stable at 1080.

I've flipped around the kernals, getting/loosing 10mh/sec
Phatk seems to do the best, Im gonna retry diablo, Since i think it'd be the best

[Fiyasko]

Try using Diablo kernel instead of Poclbm.  Change the intensity to 7, worksize to 256, and vectors to 1.  That should yield the greatest results.

You can change the settings by press S → W → ENTER.  That will great a configuration file so you won't need to re-enter the same settings as before.

Set it to these settings, Now im getting 490mh/s

[crazyates]

Try using Diablo kernel instead of Poclbm.  Change the intensity to 7, worksize to 256, and vectors to 1.  That should yield the greatest results.

You can change the settings by press S → W → ENTER.  That will great a configuration file so you won't need to re-enter the same settings as before.

Set it to these settings, Now im getting 490mh/s

Try changing your I from 7 -> 9.

[crazyates]

Try using Diablo kernel instead of Poclbm.  Change the intensity to 7, worksize to 256, and vectors to 1.  That should yield the greatest results.

You can change the settings by press S → W → ENTER.  That will great a configuration file so you won't need to re-enter the same settings as before.

Set it to these settings, Now im getting 490mh/s

Try changing your I from 7 -> 9.

LOTS of rejects

Really?! That's pretty odd.

[crazyates]

Try using Diablo kernel instead of Poclbm.  Change the intensity to 7, worksize to 256, and vectors to 1.  That should yield the greatest results.

You can change the settings by press S → W → ENTER.  That will great a configuration file so you won't need to re-enter the same settings as before.

Set it to these settings, Now im getting 490mh/s

Try changing your I from 7 -> 9.

LOTS of rejects

Really?! That's pretty odd.

I agree, But setting it to -8 drops the hashrate by 2mh/sec so... It Kinda makes sense?

Setting I to -8 or 8? There's a big difference 

[Fiyasko]

Try using Diablo kernel instead of Poclbm.  Change the intensity to 7, worksize to 256, and vectors to 1.  That should yield the greatest results.

You can change the settings by press S → W → ENTER.  That will great a configuration file so you won't need to re-enter the same settings as before.

Set it to these settings, Now im getting 490mh/s

Try changing your I from 7 -> 9.

LOTS of rejects

Really?! That's pretty odd.

I agree, But setting it to -8 drops the hashrate by 2mh/sec so... It Kinda makes sense?

Setting I to -8 or 8? There's a big difference  

8, I went back, A set it to 9, Turns out that the last time i didthat, At the same time the pool switched blocks, LOL.
I 9=487-491.3mh/s
I 7=486.8-493mh/s

[crazyates]

Try using Diablo kernel instead of Poclbm.  Change the intensity to 7, worksize to 256, and vectors to 1.  That should yield the greatest results.

You can change the settings by press S → W → ENTER.  That will great a configuration file so you won't need to re-enter the same settings as before.

Set it to these settings, Now im getting 490mh/s

Try changing your I from 7 -> 9.

LOTS of rejects

Really?! That's pretty odd.

I agree, But setting it to -8 drops the hashrate by 2mh/sec so... It Kinda makes sense?

Setting I to -8 or 8? There's a big difference 

8, I went back, A set it to 9, Turns out that the last time i didthat, At the same time the pool switched blocks, LOL.
I 9=488-491mh/s
I 7=488-490mh/s

Ok I was just curious. Sometimes I can get upwards of a 10MH/s bump going from 6 -> 9.

[Fiyasko]

Yeah, Going from 4 to 5 gives me 150mh/s lol.
Gonna try DiakGCN Gives me 450mh/s

[Fiyasko]

hey crazyates d'you have a coin address that i can kick you a tip at?

[crazyates]

hey crazyates d'you have a coin address that i can kick you a tip at?

1De7KzFiYRHUVJCuy7Ap89xYbu2Z4q1F63 Thanks!

[Fiyasko]

Does anyone else have any insights as to why im missing 20mh/s? It's not like im looking for that "Maximum efficency" I just want to see my card it 500.01MH/s

[crazyates]

Can you post either your full command line arguments, or your config file? Don't need any pool info, just the GPU settings.

[nitrox]

i run two HD 7950
they are different revision but that i run them



I hope I was helpful.

[freeAgent]

i run two HD 7950
they are different revision but that i run them



I hope I was helpful.

What sort of cooling are you using in your case/GPUs?  Those temps are crazy low.

[crazyates]

i run two HD 7950
they are different revision but that i run them



I hope I was helpful.

Stupid Trend Micro. I can't see the pic until I leave work.