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Old November 10, 2011, 03:59 PM
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Default Best 6950 to BIOS unlock to 6970

Can anyone recommend or link any of the 6950 cards that are best to be BIOS upgraded to 6970. I have read that I need a reference model of the 2gb version to unlock the BIOS to 6970 specs. If there is still the cards available to do so. MSI or XFX would be my ideal brands of choice, but I am fine with any.

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Old November 10, 2011, 04:16 PM
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Also, how do you tell which cards are "reference cards" say on Newegg or NCIX for example?

Newegg.ca - MSI R6950 Twin Frozr II Radeon HD 6950 2GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card with Eyefinity

This above one apparently works great if you use the right version of Winflash. Can anyone else confirm this?

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Old November 10, 2011, 10:31 PM
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None of the current 6950's can be flashed too 6970's, you'll have to buy used.
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Old November 12, 2011, 09:49 AM
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You will have to check around online to find the serial numbers for the original reference cards because the later revisions have their shader cores laser cut so you cannot flash them to 6970 shaders
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Old November 29, 2011, 05:34 AM
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Cool thanks for the info!
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Old November 29, 2011, 07:07 PM
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I just bought a new 6950 that can be flashed cuz I flashed it , diamond 6950 there's 6950 xoc it also has a dual bios switch, I posted pics on another post.

Diamond Radeon 6950PE52GXOC 2048MB GDDR5 PCI-E Video Card : Video Cards - Best Buy Canada

Last edited by Bravo2010; November 29, 2011 at 08:11 PM.
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Old November 29, 2011, 08:09 PM
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I've had 2 different 6950's from sapphire. A 1gb with the large single fan it didnt unlock, also didnt have the dual bios switch.

I do have a few of the 2gb Reference model, the single fan near the end, with the dual bios. They unlock just fine.

However I chose not to apply the full 6970 bios due to the different voltages it applies. I simply used the winflash utility to backup the original bios, and change the shader count. For some reason I couldnt get the winflash to write the new bios and found a dos based flash utility from techpowerup (RBE) that did the trick, i simply swaped the intended 6970 bios with the one I made in winflash.

AMD Radeon HD 6950 to HD 6970 Mod | techPowerUp
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Old December 6, 2011, 08:55 PM
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you will need to look for a used one with the reference design.
I just got a XFX 6950 2gb and the switch is not even there anymore and i talked to the xfx reps pretty sure all the new 6950 will not unlock.

check out this post though
ATI Diamond 6950 XOC
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