Well, seeing as the last 6800 waterblock thread was sent to the OTness gods, it'd be good to start a new thread on the subject... Let's get this one off the ground without the OTness and bickering that even I was partly to blame for.
As its nVidia arn't they sticking with the usual 2 moutning holes that have been around for so long know to change it slightly would bugger everything up. I recon it will be the same as the FX or similar as the FX has many different mounting points due to the size of the sink covering everything, the 6800 by the looks of it will keep the same or similar system retaining the 2 mounting holes near the core plus the others that may or may not get used for a block. morgan.
i'll try and be little more constructive this time. 6800 FX5900 The 4 mounting holes around the core look the same but not sure about the others. So a fx gpu block should work.
Thanks for that BigZ Those ramsink mounting holes look simlar to the 5900u ones to me but as thers no commercial 5900u waterblocks allredy it wont relly matter. otherwise normal nvidia gpu blocks should fit