Are separate loops worth it?

[Kaldskryke]

I probably won't drop this kind of money into cooling a computer but I'm new to watercooling and curious.

Would having GPU(s) on a separate loop from the CPU increase cooling effectiveness considerably more than just having two radiators in a single complex loop? In other words, is the cost of another res and pump justified?

Let me ask this question a second way:
From a thermodynamic perspective, the amount of heat dissipated by the radiators would be similar regardless of separating the loops, and an additional pump adds more heat into the system. Would a single pump be sufficient for a large loop with two radiators, or would the increased flow of two pumps overcome the added heat?

 

[woz_mann]

would you get better cooling performance? Yes, definatly.

What would the temp delta be? my est 2-5 C at most

Worth the money?? I dont think so

 

[rysher]

if this is the case, i won't go watercooling. i'd go peltier cooling.