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Author Topic: More MH/s from Your GPU?  (Read 1353 times)
AssemblY
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August 13, 2011, 01:19:20 PM
 #21

I realized that many people make a mistake overclicking their cards not properly or setting up guiminers wrong. What I'm about to say was checked on 5870, 5850 and 5830. Every time there was a few % more mh/s when I used those settings.

Try this settings:

1. Core Clock - that's up to You.
2. Memory clock - 340MHz ( not less not more )
3. Extra flags: -v -w256
4. Assign all cards to one core.
5. No cross fire

5870,5850, 5830 seem to work as fast as they can on memory down clocked to 340Mhz - much faster. Anything below or abow is slower.

Examples:

XFX Hd 5870.

Core - 950
Memory - 340
Voltage - stock
Extra flags: -v -w256
CPU - Phenom x2 550 down clocked to 800MHz

GUIMiner - 433-438Mh/s each

Regards

XFX HD 5850
865/300 = 350m/h
865/340 = 352.30m/h

Thx  Wink
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brb keeping up with the Kardashians


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August 13, 2011, 02:17:16 PM
 #22

HD 5850
1020MHz / 355MHz
BFI_INT VECTORS FASTLOOP=FALSE AGGRESSION=11 WORKSIZE=256 -k phatk
418 MH/s

HD 5870
1040MHz / 355MHz
BFI_INT VECTORS FASTLOOP=FALSE AGGRESSION=11 WORKSIZE=256 -k phatk
470-474 MH/s

Done with the Phatk 3% kernel mod, YMMV



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