[redleader]

I did look up the compressibility of water and I'm sorry for saying that it isnt compressible. From my research I found that it is actually compressible by 1%. Not much, but its still something. Apparently this happens in insanely powerful pumps like for dams and stuff..

Research harder next time. You can compress water a lot more then 1% according to 30 seconds on google.

If there is any component after the res and before the pump this component will cause cavitation in the pump (given that the component is restrictive) becuase the pump will be starved of water. this is so becuse the pump is having to suck water into itself from the res. it is just taking the water from the res. the water in the res isnt be forced into the block. its being pulled in.

This is wrong. Flow is constant in a series loop, and does not depend on componets. Putting a restriction on the inlet doens't starve the pump anymore then putting it on the outlet. Either way the effect is the same. Cavitation is due to drops in pressure induceing a phase change in the water. Pumps are supposed to have a minium amount of head at the inlet to avoid a phase change in the coolant, and this head is speced by the pump manufactorer for a given fluid and temperature.

Its also compeletely irrelevent. Stick to the issue.

When you said that having the block after the res in your example would give a psi of -3. Well in a way you are correct. the pressure causing the flow throuh the block would infact be coming from after the block. and not before it. This pressure being negative pressure. With negative pressure you get suction. this suction would pull the water through the water block. Here is some testable evidence to the negative pressure.

In what sense am I not correct? Or do you just like repeating whats already been posted for no evident reason?

The above example proves that the absolute numbers are actually important and not just something that can be disregarded.

It proves that you don't understand whats being discussed.

Myself i dont have much tubing to spare and really hate messing with my system. But if you want to try putting your cpu block after your res. see what happens. I GARUNTEE you that you will get worse performance with the block.

Well you have no idea whats going, won't listen to people trying to explain it, and admit that you've never actually tried it, but hell if you "GARUNTEE" it, thats good enough for me.