Quote:
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Originally Posted by Long Haired Git
I am assuming 1.5m of 3/8" tubing and all barbs are converted to 3/8".
I am using a MCW55 as I have not plugged in the numbers for the MCW60 yet.
Assuming 90 CPU Watts and 50 GPU watts, and all temperatures are based on RoboTech's die simulator.
Anyway, as an approximation, I get 2.5 LPM flow rate.
Fans @ 5v
Water temp at exit of 2nd rad: 8.87 dCaa (degrees Celsius above ambient)
CPU temp: 22.47 dCaa
GPU temp excluding TIM: 9.4 dCaa
Fans @ 7v
Water temp at exit of 2nd rad: 5.93 dCaa (degrees Celsius above ambient)
CPU temp: 19.52 dCaa
GPU temp excluding TIM: 6.44 dCaa
Fans @ 12v
Water temp at exit of 2nd rad: 3.92 dCaa (degrees Celsius above ambient)
CPU temp: 17.52 dCaa
GPU temp excluding TIM: 4.43 dCaa
Leaving the fans at 7v, and changing the pump to a MCP655 @ 5, you'd only get a half degree or less improvement.
When you assemble, please do the bucket fill flow test and let me know how close I am with my approximations
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Just got done with my loop and ran a bucket test for you. I came up with 3.1 LPM, wonder what accounts for the difference. Perhaps the Rev.2 MP-05 Accelerator plate does a better job than originally thought or the MCW60 is a SERIOUSLY low resistance block.
In any case, that's probably at least partially responsible for the temps I'm seeing:
Flow order:
Laing DDC1/Swiftech MCP350 (pump)->D-Tek/Cooltechnica MP-05 SP LE(CPU)->Swiftech MCR120 Quiet Power (Rad1)->Swiftech MCW60 (GPU)->Swiftech MCR120 Quiet Power (Rad2)->Swiftech MCRES1000 (res.)-> Pump
Fans:
1 Scythe S-Flex 1200RPM @8v (800-920 RPM)
1 Scythe S-Flex 1600RPM @6v (860-1040 RPM)
Temps (on-board Sensors):
CPU (opteron 170 stock): 40c load (2x Prime95, 1 small, 1 large)
GPU (ATi x1900xt stock): 39c load (ATi Tool + RTHDRIBL)
Room Temp: 26c
So, CPU (load)= room + 14c; GPU (load)= room + 13c
Hmmm...