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Trouble unlcoking XFX 6800 XT pipelines and shader

post #1 of 21
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Picked up an XFX 6800XT Pci-e with NV42 core (as shown by rivatuner)

When I go to the NVstrap and try to unlock the extra 4 pipelines and the shader, it will show it in my Nvstrap tab as the custom setup

(custom 12x1,5vp)

I restart the computer as it instructs, and when i go back into rivatuner, it still shows the stock configuration NV42(A1,8x1,4vp)

What should I do? Maybe flash in the bios of a 6800 GS or something like that?

Any help is greatly appreciated folks.
post #2 of 21
Im glad you asked this, I was wondering the same thing.
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post #3 of 21
Quote:
Originally Posted by Maverick_1369
Picked up an XFX 6800XT Pci-e with NV42 core (as shown by rivatuner)

When I go to the NVstrap and try to unlock the extra 4 pipelines and the shader, it will show it in my Nvstrap tab as the custom setup

(custom 12x1,5vp)

I restart the computer as it instructs, and when i go back into rivatuner, it still shows the stock configuration NV42(A1,8x1,4vp)

What should I do? Maybe flash in the bios of a 6800 GS or something like that?

Any help is greatly appreciated folks.
Most PCIe cards cannot be unlocked.
I had an XFX 6800XT (PCIe) as well and I had the exact same problem you have. I then decided to pay a little more and get the 6800.

If you want to flash, you have to match the stats of both BIOSes.
Memory timings and BIOS versions are the most important to match.
You also have to make sure you reduce both core and memory clocks on the 6800GS BIOS before you flash it to your 6800XT otherwise you XT won't be able to take it.
Oh and in case you still decide to go ahead and flash... first backup your original bios then get ready for a blind flash
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post #4 of 21
Ok, I got the 6800 AGP, but I had the same problem. I'm a RivaTuner User and I find this program tends to work a little better than my NVidia tools.

If I were you, I would try this first. Download RivaTuner and under the "Target Adapter" part of the "Main" page, click the arrow that points down-right. Go to NVStrap Driver and check the box that says "Allow enabling hardware masked units"...The extra pipes and the extra shader are what is "masked".

Click the customize button and you should see 4 check boxes in the top area with one empty one in between 2 of them. That is your extra pipelines. Click it to enable them. You should also see 5 more checks a bit further down. These are your Shaders. Again, there should be one that is unchecked somewhere inbetween. Click it to enable the extra shader.

Then, hit ok and hit apply. Then, you'll need to reboot your PC.

While, it's rebooting, just pray that it'll work. I've heard of this not working in some systems, but it worked for me.

Good luck and you can get RivaTuner here: http://www.guru3d.com/rivatuner/

Hope this'll help someone out.

@Maverick 1369: All you forgot to do was check that box that reads "Allow enabling hardware masked units" on the NVStrap driver page. I did it twice myself and I kicked myself when I realized it.
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post #5 of 21
Didn't work for me (using RivaTuner) ;( makes me sad. Has anyone tried flashing the 6800 XT bios with the 6800 GS? I have the XFX 6800 XT and would like to know if anyone has had any luck.
post #6 of 21
Quote:
Originally Posted by jlachovsky
Didn't work for me (using RivaTuner) ;( makes me sad. Has anyone tried flashing the 6800 XT bios with the 6800 GS? I have the XFX 6800 XT and would like to know if anyone has had any luck.
I wouldn't do that if I were you.
Just overclock your 6800XT with CoolBits (both the core and the memory).
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post #7 of 21
i have the AGP 256mb version of the xfx 6800 XT. i just now tried to flash the bios to the 6800 gs. (made sure it was the agp and 256 mb version as well) and the bios wouldnt work, so i had to put in my old pci mx 4000 card and flash the orignal bios back onto the 6800. soooo i dont think you can flash the xt to the gs on yours either
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post #8 of 21
As far as I know, only the 6800XT AGP can be unlocked (up to 6800GT level), because it's based on the same core, NV40.

But that's odd, since I thought that the 6800XT PCIe was NV41..

edit: the 6800 and 6800LE can be unlocked too (AGP).
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post #9 of 21
I have the 6800 XT AGP 512 and its NV41.. i was able to unlock to 12/5.. it still says NV41(A1,8pp,4vp) when u open the prog but the tab where u oc' it still sais custom 12/5. Is the card info supposed to change when rivatuner restarts?
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post #10 of 21
Never mind what I said then...
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