Chew Toy - umm, you don't appear to be cooling PSU, HDDs or Motherboard voltage regulators with your setup. May I respectfully suggest that you look more closely at my pic.
I did notice, I am not cooling those things with water but all are air cooled. On the MB the abit oates cools the power, I have an 80mm fan cooling my HDs and the PS has 2 fans also. I dont see adding heat from those Items into the cooling loop since none of those items are at a dangerous heat level. My case temp runs about 10°F over ambient (read from instant read thermometer) My MB power reads about 15~20°c over ambient (read from onboard sensor) and my HDs are barely warm to the touch.so I would guess maybe at 100°f.
And my system runs 24/7 at 100% cpu load (I run 2 instances of FAH 24/7) and it is my HTPC
I have 3 tv tuners in it (PVR350, PVR250 and a 9800AIW soon to have another PVR250) also a plextor 8x drd writer a 12x dvd player 2x200meg sata HDs .
it also runs that way @ 290~295fsb with a 2.4c and if/when I bench with it I run it at 300~304
here are a couple shots of my temps.
MBM5 Dashboard
MBM5 High/Lo
I built it to perform and be reliable with noise as a secondry consideration. I sleep with it less than 2 feet from my head.
If I were to gool anything else with water it would be the ram.