1/2 vs 3/8

[Circaflex]

Well i searched and looked around but couldnt really find a definite answer. Im going to be cooling my cpu, gpu for sure and maybe my nb depending on the money i can get. Now i heard the 6800 gt adds a lot of heat, i was going with a thermochill 120.2 but thought hey maybe a 120.3 would be better for this setup? Im gonna run a dd12v pump, but i cant decide on the tubing size. I heard 3/8 is a lot easy to route but would my temps be that much different that i would notice it and be pissed i ddint get 1/2?
Id probably run a tdx and a 6800 block from dd and maybe a nb block later on, would the 120.2 be enough with 3/8 or would i need that 120.3?

 

[SysCrusher]

I doubt you will ever see a difference. Slightly less flow if you were to measure it. If your concerned about it check out this thread.

http://www.ocforums.com/showthread.php?t=331742