I found a Powercolor 1GB 6950 with DualBios Switch. Would it be possible to unluck the shaders then with a modded BIOS?
This topic may clarify my Question with the 1GB version ( http://www.overclock.net/amd-ati/996523-just-unlocked-powercolor-hd-6950-1gb.html ). The 2GB version as you wrote is doing fine.
I can get the 1GB version for $30 less and 5 days earlier.
Edit: I decided to go with another GPU. The 6950 is indeed a bit overkill for mining.
Topic: Recommendation for unlockable 6950? - page 2. (Read 5014 times)
I can answer this myself: Some are unlockable, some are not. It is all luck.
No, it isn't all luck.
I'm a 6950 owner (I have 2, actually) unlocked to 6970s and unlocking is possible on reference model 6950s. These were the ones released at launch. They have the dual BIOS switch that allows you to unlock. More recent models have the switch removed. If you look around you can find reference cards from HIS/Sapphire/XFX etc. but they're likely to cost more. I happened to get mine at launch.
It's not luck! The reference PCB (the one that says AMD on the board just above the PCIe connector) are all 2GB, and all unlockable! Another easy way of telling, is the BIOS switch! I have heard some rumors about all 6950s were unlockable, though the 1GB, and the non-ref cards are only done using an original 6950 modded BIOS. The ref cards can be done either way (stock modded BIOS or 6970 BIOS)
I can answer this myself: Some are unlockable, some are not. It is all luck.
I am not so sure if there are differences between GPU card vendors, e.g. is a Powercolor worse than an XFX?
http://geizhals.at/deutschland/a619993.html
http://geizhals.at/deutschland/a636250.html
It goes unsaid that I want to unlock the shaders and get the most out of it for OpenCL.
http://geizhals.at/deutschland/a619993.html
http://geizhals.at/deutschland/a636250.html
It goes unsaid that I want to unlock the shaders and get the most out of it for OpenCL.
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