Quote Originally Posted by EvilClocker View Post
eddy, the temps are not changing very much as my water gets colder.. I think its because I am using 1/4 tubing like I said in my previous post. "cpu temps dont change much" I am using a Koolance pump that does 7 L/Min with 2.6m Head Preassure.. This is on a Core I7 860 4ghz with HT On 1.39 Vcore
i think based only on physics youd have to see a change.

if the air is X and the water is X+5C (called Y) and the CPU is Y+5C (called Z). then in this case your CPU would always be X+10=Z and always 10C above any air temperature you have. this is how we get a C/W curve or ratio (once CPU Watts are known). it should not matter what the air temp is, your C/W ratio is constant as long as airflow, waterflow and pressure do not change.

unless im way wrong here and CW is affected by temperature somehow, i do know that at lower temp CPUs use less heat, but should be insignificant in a non professional test environment. but also means that if your air temp went down, then your CPU temp would have gone down even more, not going higher