Closed Loop WC Mod thread, H50 pump and/or Thermaltake water 2.0 performer blocks - Page 2

Distilled water in line. Ready for 24hr leak test then mount in system.

This is really going to drop some temps.


Problem with H50 pump is its surprisingly way weaker than the asetek unit that the Antec 620 and Thermaltake unit uses. Alot more pressure with the Thermaltake unit which keeps around .25gpm which would be enough for the 240 rad.

First benchmark:
(The cooler isn't lapped that well and the thermal paste is the crap AA ceramique white stuff (really bad for direct die) MX2 would be ideal)

Temp Decreases:
Idle: ~3C lower
load: ~6C lower

Radiator temp in:
35.5C
Radiator temp out:
31.0C
(Tested with thermal gun at bottom of fins near radiator inlet and outlet)


Folding on my system today...hopefully it holds up because I won't be here to fix any issues....


I think I've hit the thermal transfer limit as far as the performance maximum for the flow rate of the pump. I do notice the radiator air is decently warm when folding and gaming but obviously nothing like the air temp out of the radiator when I had just the single 120 slim rad. But when I start the 3D load it jumps straight from like 27C to 40C immediately. Then it very slowly increases in temp. So basically I know that the block that's on the GPU heats up immediately, then the liquid to cool the block is only flowing so much it can't sufficiently cool below 40C. If that makes sense. If the pump had a higher flow rate it could pull in the cold water after the rad and cool the block more but it just can't cool any more. So basically a 360 rad wouldn't benefit any because the flow rate wouldn't sufficiently bring in cold water from the rad to cool the block more. So basically I think this is the maximum amount of cooling capacity that this Asetek unit can provide. That is probably why the Corsair H100 has around the similar pump and around the same rad. It just needs more water flow in order to provide any additional cooling. But still, its pretty incredible that my GTX580 which runs super hot can be cooled down <45C on full load massively overclocked.


Ordered a fan controller and some MX2 thermal paste. Going to reseat the cooler once again in awhile with the MX2 paste and also re-lap the cooler to ensure the absolute best heat transfer.
Edited by Cakewalk_S - 10/11/12 at 11:02am

Oh and little note:

Temps have settled out some the past few days of folding and BF3. Folding at 1.050V @ 810Mhz @ 39C.
BF3 is around 40-42C.
Heaven3.0 maxes @ 44C when 1.150V

Best part about this all! Gained 20MHz at same voltage on my card! ~0.6fps in heaven3.0 benchmark.

it'll say in tiny print under the bottom of the radiator where the barcode is. Right next to it it'll say asetek, it should be the same 3.1W pump

It's a 570LC which has the same pump: http://www.asetek.com/desktop/cpu-coolers/570lc.html

Updated OP with some more pictures of the finished product.