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Overclocking Sapphire HD 6950 2GB (reference) - Page 2

post #11 of 50
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Quote:
Originally Posted by The Mac View Post

i had my reference 6950 up to 950 @ 1.125
i had also patched the shaders to 6970 however. perhaps that makes a difference
also, are you sure you have the TDP at +20%?
im looking to sell it if you were looking for a second one.

My card is unlocked and is using the 6970 BIOS.
I was able to get 950Mhz stability at 1.18 but only as long as the temp didn't reach 73 Celsius (Wierd) which meant running the fan at 100% constant.
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post #12 of 50
They used different ram in the 6970, timings are probably different.

Id flash back to 6950 and just patch the shaders.

you'll probably get better performance.
post #13 of 50
Thread Starter 
Quote:
Originally Posted by The Mac View Post

They used different ram in the 6970, timings are probably different.
Id flash back to 6950 and just patch the shaders.
you'll probably get better performance.

Any way to verify this? (It takes a while to flash the BIOS and get everything set up without bricking it)

Edit: I also don't want to flash, then find out my performance has dropped, then have to re-flash back to 6970.
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post #14 of 50
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Aside from everything else.. Why does my videocard crash at 73C? Any ideas? This card is supposed to be able to handle up to 90C.
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post #15 of 50
My thought is the memory.

It was never verified that the timings were different, just an ongoing theory back in 2010, but it was definitely proven that the ram was different, as i believe some people on [H]ocp pulled the sinks and looked.

it shouldnt take you more than 2 minutes to flash and reboot.

are you using RBE? You can change the voltages right in the bios, and it even has the utility to patch the shaders built in.

Reference cards are dual-bios...no chance of bricking..
post #16 of 50
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Quote:
Originally Posted by The Mac View Post

My thought is the memory.
It was never verified that the timings were different, just an ongoing theory back in 2010...

I guess I could try, but as far as I know this bios that I'm using was written with the 6950 in mind and shouldn't have altered memory timings.
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post #17 of 50
Put the orignal bios back on (or copy it from the primary bios partition), patch it, then oc it and see what happens.

How exactly can a 6970 bios be written with a 6950 in mind? sounds like an oxymoron...

if you got the bios image from techpowerup, give me the link and ill look.
Edited by The Mac - 8/15/12 at 12:51pm
post #18 of 50
Thread Starter 
Quote:
Originally Posted by The Mac View Post

Put the orignal bios back on (or copy it from the primary bios partition), patch it, then oc it and see what happens.
How exactly can a 6970 bios be written with a 6950 in mind? sounds like an oxymoron...
if you got the bios image from techpowerup, give me the link and ill look.

Yeah.. I'll try reloading the bios to stock and unlocking the shaders. I'll let you know how it goes when I get back.
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post #19 of 50
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Alright I reset it, now I just gotta boost the upper limit.

edit: For some reason.. 840Mhz on stock bios is hotter than 930Mhz on 6970 bios.. (It might be obvious why, but I'm a newbie)

edit 2: When I put the side panel back on a wire fell and stopped the side fan from spinning. Fixed it, now its cooler.
Edited by Videowarrior - 8/15/12 at 1:29pm
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post #20 of 50
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I tried to boost the upper limit (Without hash file) and got met with a plethora of BSoD's. Anyone know a good way to boost the upper limit? (I'm a moron, I know)

(I think I bricked that bios)

Edit: Yeah ****, I bricked it.. And of course I have not a ****-clue how to unbrick that side of the switch. Help meh out?
Edited by Videowarrior - 8/15/12 at 1:50pm
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