3.
I have the H50 myself, in a P180 so I do have a fan on the top of my case to exhaust air. The one thing I miss is the fan directly on top of the CPU keeping the ram cool. That said, my system is 100% stable with the reversed rear fan, and though I know it is crazy talk to have the warm air going back in to the case, it's important to remember that most cases have a front fan option to push fresh air over the hard-drives and video card. And with the regular top mounted Power Supply models, the length of the power supply limits possible turbulence.
I currently have a 6000+ that is idling at room temp and tops out at around ambient+10. Noise levels are down to the point my slow spinning case fans are getting to feel loud.
All in all, I think you should do a full review of the reversed airflow, since you are discrediting ASETEK as being sane cooling engineers. The temps provided by the final benchie are probably way higher than what should be expected since water cooling becomes less efficient as the air temperature used is increased. It is simple thermodynamics, as you increase the temperature of a gas the volume the gas uses at STP is greater which means your air density is lower resulting in less potential for energetic transfer between the radiator and the air, which in turn means the water is looping back at a higher temperature, which leads to a vicious cycle until the system limit is reached and a fail-safe is tripped. This is not an issue with air coolers as the effect of the air over the cooling fins will always directly affect the core. Air cooling is less sensitive to higher temperatures than liquid cooling. Cars have radiators in front of the engine, even though this results in warm to hot air passing over the engine. However with lower temperatures, liquid cooling can be near silent since water accelerates water from hot metals and cold metals suck heat off water then quickly releasing it to the cold air.
I can go on and on, but seriously, I have followed you guys quite avidly over the past years and you dropped the ball on this one.
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Posted by: ninjaquick

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Date: 11/17/09 01:35:33 AM]