I completed the 3 coldplate shootout on my test bench at work, glad my boss is out this week

A little about the setup: I used a 30x30mm heat source hooked up to a DC power supply outputting 100 watts, a Lytron chiller was used to keep the flow at a constant temp and to regulate flow, a load cell was used to make sure each block was mounted to the same pressure, an inline flow meter measured flow rate and a pressure transducer on the inlet and outlet measured pressure drop across the coldplate, temp was monitored by thermalcouples at the center of "case" of the heater and also in the fluid flow at the inlet and outlet.

-Thermal resistance was calculated by {(Tcase - T inlet fluid) /power}
-Pressure drop was simply {inlet pressure - outlet pressure}
-After a 2 hr block burn in i waited for steady state and took data at .5gpm, 1gpm,1.5gpm and 2gpm










As you can see the Fuzion has better thermal performance at all flow rates but what is more impressive is the pressure drop!

with pressure drop this low this block will be perfect for systems that have alot of components (like multiple water cooled cpus / AMD 4x4) and you could run them off one pump.....i need to make a performance vs pump power graph ....in my experience thermal performance increase as pressure drop increases (a-la storm) but the ability of the Fuzion to have this good of a performance with this lillte pressure drop is incredible.

one other thing to note is that my chiller's pump could not push more than 2.5 gpm through the Storm, and 3.5 gpm with the apogee, but the fuzion would go all the way to 4 gpm (close the max of my chiller) and its performance kept getting better where as the thermal performance of the other two were leveling off.