HUH???? What's it made out of, gold? All kidding aside, I paid an average of $36.00 each for the "factory refurbished" HD4850's and $20.00 each for brand new, in the box, EK-FC4850 full cover copper water blocks!
So, $168 + $58.00 for a Q6600, $45.00 refurbished P5Q-E Deluxe, add to that 16gb ram I had laying around and 3, 400gb sata drives sitting on my shelf I have a "fair" system for under $300! and I don't think I'll spend the remaining $700 of your $1000 on a radiator, fans, reservoir and pump do you? And, since I'm not a gamer I'm not worried about the "latest and greatest", works for me.
I just wanted some advice on sizing a water block, thats all.