Asus 6950 DCII Bios Overclock

[Wraithbone]

Hello.

i have unlocked the shaders on my asus card as seen above. (not a reference card!)

I can now overclock my card to the following(using smartdoctor and amd overdrive):

Settings:

vcore: 1,275
clock: 950
mem: 5400
Overdrive power control: +20

When im trying to make these settings work with bios changes i set the following:

vcore: 1,2
clock: 900
mem: 1350 (x4)
Overdrive: OFF

Result: System wont boot. (BSOD at windows boot)

Second try:

vcore: 1,1
clock: 880
mem: 1250 (x4)
Overdrive: OFF

Result: System wont boot. (BSOD at windows boot)

As a result i had to reinstall windows on another disk that did NOT have AMD drivers installed to recover the original bios again. (if i install the amd drivers the system crashes again!)

Do any of you have advice on how i can mod the bios to a functioning overclock level that WILL boot ?

[h4cker]

What bios did you use to flash whit?

[Wraithbone]

The Stock with shaders unlocked. Did the shaders myself.

[The_Ish]

Maybe it's just me, or maybe you give that cooler a little to much confidence?
As a bad comparison, I can get 935/1400, +20%, out of my Sapphire card.
The reason it does not compare is of course the cooling system is worse on paper than what you have.
940/1400 will not work.

[Wraithbone]

Originally Posted by The_Ish

Maybe it's just me, or maybe you give that cooler a little to much confidence?
As a bad comparison, I can get 935/1400, +20%, out of my Sapphire card.
The reason it does not compare is of course the cooling system is worse on paper than what you have.
940/1400 will not work.

Hello... - both of ya.....

As i already mentioned i tried with 880 clock and standard 1,1 vcore and the memory at standard 6950 clock.

I dont think i overestimated the DCII as i can set it to 950/5400 (with overdrive power at +20 without the bios mod - or better 950/5400/1,275 stable with software. i want to impliment the OC directly into the bios so i dont have to deal with software every time i reinstall)

Or am i incorrect ?

[Wraithbone]

ooh... and if you loot at my settings above i even tried flashing with 880/5000 and i STILL have the problem.

Noone else has any idea ?

[TimoX]

You can't do it.
69xx series are driver locked, meaning if you adjust clock or fan speeds in the BIOS it cause a digital signature mismatch, which cause the video driver to fail to load on startup.

You're stuck with a software overclock for now, like the rest of us.

[Wraithbone]

Originally Posted by TimoX

You can't do it.
69xx series are driver locked, meaning if you adjust clock or fan speeds in the BIOS it cause a digital signature mismatch, which cause the video driver to fail to load on startup.

You're stuck with a software overclock for now, like the rest of us.

Hello. Thanks for the answer.

Not the answer i was hopeing for but the exact answer i was looking for. Thanks! now i can stop wondering!

[The_Ish]

Where are you getting the 5000 number from? Oc'ing by software takes you 30 seconds, is it such a big deal?

[Wraithbone]

Originally Posted by The_Ish

Where are you getting the 5000 number from? Oc'ing by software takes you 30 seconds, is it such a big deal?

Well. Ever tried changeing voltage In smart doctor ? It jumps around and can fry your card. Afterburner does not work with this model. Different power chip.

Does the same restriction apply to nvidia cards btw?