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Author Topic: msi twin frozr II 6950 350 mhash max??  (Read 1102 times)
mrbashfo
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August 25, 2011, 02:23:37 AM
 #1

Hi, I had a problem with a 6950 I just added to my collection... LOL when I did the over clocking unlcok thing everything would go to 0 and not save the new clock speeds I put in. I am using afterburner.

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critical
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August 25, 2011, 02:55:53 AM
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use sapphire trixx
jamesg
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August 25, 2011, 06:15:40 PM
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Hi, I had a problem with a 6950 I just added to my collection... LOL when I did the over clocking unlcok thing everything would go to 0 and not save the new clock speeds I put in. I am using afterburner.

I have the same card and it seems to be stable at 880/625. I get 358Mh/s per card with cgminer 1.5.1. I am using MSI afterburner for the overclock/underclock.
Furyan
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August 25, 2011, 11:56:45 PM
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MSI Afterburner refused to over/underclock my MSI TFII 6950, I had to use a utility that edited some registry values directly to unlock the ranges.

I've got the card OC'd to 900 core, 500 memory and am grinding 400 MH/s using Phoenix 1.6.2/phatk, 90% fan, 66 deg. C.

I'm actually running via GuiMiner with the following extra flags:

-k phatk VECTORS BFI_INT WORKSIZE=128 AGGRESSION=13 FASTLOOP=false

Oh, almost forgot to mention - I have also unlocked the extra shaders, I have 1536 total shaders.
Jezzz
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August 26, 2011, 02:51:42 PM
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You should get about 370 MHs @ 900 Mhz.  The fastest fix might be to try another OC application.  Trixx is probably your next best bet.  Also, clocktweak is worth a look.
Furyan
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August 26, 2011, 05:35:47 PM
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You should get about 370 MHs @ 900 Mhz.  The fastest fix might be to try another OC application.  Trixx is probably your next best bet.  Also, clocktweak is worth a look.

I disagree.  See screenshot.

Keninishna
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August 27, 2011, 08:12:12 AM
 #7

you can get 400 mh/s outta it but prob more stable at about 370-380. Make sure you go into CCC and move the powertune slider to +20% or the card will throttle.
Furyan
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August 27, 2011, 11:11:36 AM
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you can get 400 mh/s outta it but prob more stable at about 370-380. Make sure you go into CCC and move the powertune slider to +20% or the card will throttle.

Does that mean I can get 430 MH/s if I powertune +20%?! Cheesy Wink I found the card got too hot when I tried that.  I may later on though when I can cool it bit better.
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August 27, 2011, 08:52:53 PM
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You should get about 370 MHs @ 900 Mhz.  The fastest fix might be to try another OC application.  Trixx is probably your next best bet.  Also, clocktweak is worth a look.

I disagree.  See screenshot.



Your Mh/s will also differ depending on how many cards you are running on a single MB. I run 5 of these per MB and there is no stability at 900/500. I have to back off to 880/500 to keep things stable.
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