[ibmkg]

I recently made a water block. I used a cross drill method. Block has following specs:

Thickness:10mm
Length x breadth: 76 x 76 mm

Now I have drilled two holes of 60mm on one side and three holes on other. I have then used one for water in and other one for water-out. Rest has been blocked using small screws. Hole size was 5mm.

I am using cross drill because it is the easiest method.

For testing, I took a blowtorch and heated the block until it was hot (the point at which I could not touch it). Then I powered the pump and within 3-5 secs the block returned to its normal temp.

For pump, I used a car's fuel pump. I really want to show you guys what I am up to but now I only have access to my Cell Phone VGA camera.

My questions:

a) Is Cross Dill efficient enough to hold down the temperature of a LGA775 p4 HT 3.2GHz?

b) How can I test the efficiency of my block? One way I could think of is attaching the block to a car's engine heater (found in diesel car engine and works on 12V). First, I would measure the heater temp then attach it to block and measure the drop in heater’s temp.

c) Say if I bolt in this block, is there any chance that I might damage my CPU? I mean like, would it be overheated or something?

d) Which thermal paste should I use?

e)If I increase the thickness of copper from 10mm say to 13mm and increase hole size from 5 to 8mm, would that be a good idea? Also, increase the copper size to say 85mm length and 51mm width (decreased, as this is the only size I can get my hands on) and increasing the number of holes?

For mounting issue, I was thinking of gluing a Plexi plastic to block and drilling holes in it.

Excuse my English but I am in a hurry.

Cheers! DAN