Would it be possible to have 1 waterblock for 2 cards? Or like this (Please excuse my crappy paint picture)
 

 
If that's possible with my 2 GTX480's .. I'd be interested in buying one if it didn't cost my left leg :p
 
 
edit; sorry for going off topic - if you want to continue this feel free to pm me :D

This makes me want to get the 580 over the 680 just because I like to support talent, and Nate's talent is phenomenal !

loveha
That is going to be the deal breaker then. Needs to be compatible with it.

Backtracking a little bit, but the customer recently let me know that he wanted all copper ones, so I will be designing them from scratch.  MOAR copper!
 
 

It will be, but it won't be cheap though.  Not sure what your budget is

I wonder how much different the PCB layout is. 

The design process isn't exactly swift, but measuring can be.  I could send your card back after the initial measurements and a quick draft of the card.  Then when the time comes to prototype I will likely need it back to test fit & such.  Do you have a backup card to use in the meantime?  I have a 9800 GTX+ that I could "cross ship" if its the only card you have. 

ehh, its hard to say since I haven't made it yet.  I have to order the materials soon.  I will start the prototype soon, with some plastic. 

Finished the majority of the toolpaths.  Updates will be coming soon!

That oblong hole is just to remove mass and cut down on weight, and for aesthetics.  Nothing more. Maybe to make it easier to get a handle on?

Just got off the phone with another forum member who talking me through a cam program.  What has been taking me days took minutes.  He is my hero!

Just started the outer shell:

looking good nate!

Gratuitous, the unsung hero whom I can't praise enough.  What has taken me weeks to handjam lines of code can now be done in minutes.  There is much more for me to learn, but some foundations have finally been laid down.  I am forever grateful.
 
A super rough cut finally finished:

Still have to do the O-ring, holes, and the back of the card.  Then test fit it.  Probably test fit first after I drill some holes in the back which will be concentric with the holes of the card. 
 
This thing took HOURS to cut. Only because I had the machine set to cut copper.  It would have taken minutes, but it gave me idea on how inefficient the toolpaths that the computer generated were.  It kept jumping from one side to the other and wasting time during the process.  More of  a personal development that I must work on in order to make the CAM process more efficient.  Still beats weeks of coding. 

crazyg0od33

is there an idea on cost for one of these if I were to want one for a second 580 im getting?

I am starting to get an idea, but these will not be inexpensive.  That whole chunk before you will be 100% Cu110.  Pure copper (99.9%)  I don't have the resources of real block makers, but I am far more open to suggestions, and customization.
 
May have to trim a "hair" off the underside of that hook section, but the SLI connector fits underneath.

Not a 100% test fit, but I just put it over the card to see how it looked.  Excuse the rough plastic, its just a rapid prototype (if rapid is a good choice of words?)
 
 
 

Thanks!