Ok, you probably read (at least some) of my thread called "The ideal water block" (if you didn't
please do 
), I said I would make water blocks for the northbrigde and the GPU, some people convinced me that I should do the GPU block first. Now it's the time to do it because I'm making the model to cast the final version of the CPU block so Iwant to make the model for the GPU while I'm at it.
I never really made a GPU block but I learned in these boards that GPUs don't dissipate much heat, so the block has to focus mainly on restricting as little flow as possible. My first idea is to make a block like this, very simple, should restrict very little flow and exchange enough heat to cool a overclocked GF4, well I think so, if anyone knows how many watts a GF4 dissipates when it's heavily overclocked that would be usefull info, I guess this block I'm thinking of can cool up to 50 watts without any problems. I made a sketch in photoshop but my FTP client is in my other HD, wich is not installed now so I'll post it later. It consists of a "box" with 3 or 4mm walls, the inlet and outlet in one of the sides and a division in the middle that forces the water to go around it, so it circulates in the whole block, these channels will already be pretty large, if flow restriction is still a problem the block can be made tall to make the channels even bigger.
This block will be made to be compatible with the Geforce 3 and 4, I have a GF2 myself but I'll have to upgrade once I have to begin testing the block.
I would like to know your opinion on the following:
1 - Measurements of the block so it fits on the place of the original GF3 or 4 HSF.
2 - What you think about the design I talked about, this can wait intil I post the sketch I made
3 - How fast is your Geforce running and how much heat does it dissipates.
Thank you
Bruno Facca