6990 unlocking switch problem

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LBSPhellfireAk

Honorable
Mar 31, 2012
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i have a 6990 ,when i unlocked it using the bios switch ,and started playing games after some time ,it got hung and turned into weird colors i restarted my system the same happened ,is this because of my psu ive got a 750w
cooler master bronze
 
Solution
RussK1


Either overheating or not the gpu isn't getting enough power. We'll assume the GX 750 is good for 600w - that's cutting it close. The 6990 is a power hog and requires 32amps.

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COLGeek

COLGeek

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Apr 6, 2009
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What HD6990 do you have? Are you sure about the switch? On many high-end Radeons, the switch is to enable a backup BIOS in the event you mess the main copy up with a bad overclock. It is for recovery purposes.

Please clarify what make/model of HD6990 you have.
 
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RussK1

RussK1

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Apr 15, 2011
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All 6990's come with a switch. Bios 1 is default 820/1250 and bios 2 is AUSUM mode with clocks of 880/1250.

AUSUM - "Antilles Unlocking Switch for Uber Mode"

This bios can also be modified.

@OP

Sounds like you're overheating. Also, Cooler Master has some really questionable power supplies. What exact model is it?

 
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L

LBSPhellfireAk

Honorable
Mar 31, 2012
23
0
10,510


gx 750w bronze
 
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L

LBSPhellfireAk

Honorable
Mar 31, 2012
23
0
10,510


power color hd 6990
 
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RussK1

RussK1

Splendid
Apr 15, 2011
6,336
0
25,960


Either overheating or not the gpu isn't getting enough power. We'll assume the GX 750 is good for 600w - that's cutting it close. The 6990 is a power hog and requires 32amps.

 
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