Turning a 6800 into a 6800GT

[Schmeh]

I just saw this over at www.Guru3d.com, "Alexey Nikolaychuk, the author of RivaTuner, found the mechanism which NVIDIA cards use to set 12 or 16 pipelines on GeForce 6800 and 6800GT/Ultra, respectively. Now then, if you own or are buying a regular 12 pipe GeForce 6800 then you might be able to make it a full 16 pipe version by using a patch in RivaTuner (patch is not yet released). Anyway, that's a 100 bucks easily earned I'd say. Of course there's a risk that the 4 disabled pipes are defective but hey .. it's fun to try out and see if you got a winner !"

Apparently the guy who makes RivaTuner has found a way to possibly turn on the 4 disabled pixel pipelines on regular 6800s. I say possibly because the pipelines might be defective and that is why they are off. but he got it to work on his card.

This is awesome for those of us who want to get a 6800GT, but only spend $200. Now there is no reason to go with ATI in this round.

 

[Guest]

Wow a soft mod would be nice!
Much more work as been done in order to unlock the 4 xtra pipes on the x800pro...

If your real lucky you might be able to unlock the pipes and OC it to Ultra speed that would be sweet.

Asus P4P800DX, P4C 2.6ghz@3.25ghz, 2X512 OCZ PC4000 3-4-4-8, Leadtek FX5900 w/ FX5950U bios@500/1000, 2X30gig Raid0

 

[DonnieDarko]

If your real lucky you might be able to unlock the pipes and OC it to Ultra speed that would be sweet.

I may be mistaken, but doesn't the 6800 only needs one power molex and the gt/ultra need 2? So if you tryed to oc it too them speeds wouldn't you need some kind of volt mod?



AMD64 2800+
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[Guest]

Umm good point. ButI rember reading that it worked fine with only one molex connected...
Also isnt the 6800 nu clocked higher than a GT(close to ultra speed) but is actually slower than GT because of the 12 pipes? Would have to check this out.

Asus P4P800DX, P4C 2.6ghz@3.25ghz, 2X512 OCZ PC4000 3-4-4-8, Leadtek FX5900 w/ FX5950U bios@500/1000, 2X30gig Raid0

 

[Schmeh]

Actually the regular 6800 is the lowest clocked of the three. 6800: 325Mhz GPU, 700Mhz VRam
6800GT: 350Mhz GPU, 1000Mhz VRam
6800U: 400Mhz GPU, 1.1Ghz VRam

Both the 6800 and 6800GT have only one molex connector on all the cards I have seen, the Ultra does have 2, but I remember reading somewhere that it will do fine with only one being used. I am not sure, though.

Another thing I was wondering, the GT's VRam in 300Mhz higher than the 6800. Is it going to be possible to overclock the memory 300Mhz (almost half of its clock rate)? And if not will it make that big of difference?

 

[Guest]

I would need to do some more research!
My numbers on the 6800 where all messed up in my head hehe.

About the memory difference it depends on what memory is used.
THe 6800 nu doest come with GDDR3 does it? Also memory can vary alot between different manufacturer.

Remains to be seen. Adding the 4 pipes will realy help it tough

Asus P4P800DX, P4C 2.6ghz@3.25ghz, 2X512 OCZ PC4000 3-4-4-8, Leadtek FX5900 w/ FX5950U bios@500/1000, 2X30gig Raid0