Olaf van der Spek wrote:
A C2D isn't exactly a high-end CPU that produces a lot of heat. I assume you didn't have a dedicated GPU either.
Well, it isn't a high-end CPU but it does produce a lot of heat. Please consider that there's a heavy overclock involved - from 1.8 to 3.0GHz and the production process is 65nm. All energy-saving features had to be turned off and voltage has been increased for stability reasons. All in all, it is a hot CPU, but nothing Ninja 2 couldn't handle passively.
And yes, I had a dedicated GPU - first a 8800GTS 320 (G80), which was VERY hot and inefficient. I swapped it for HD 4850, which is also a hot card. This one is still serving its duties, as it's cheaper and greener to keep a separate card and pay for the electricity than to buy a new MOBO just for integrated video.
Again, a 5750 isn't a high-end GPU...
You can't just generalize from your system.
Granted, it isn't high-end, but it's passive and all the heat is dumped inside the case. Temps are 40 at idle and 80 under load. I'm quite certain that a hotter card would do just fine, I was hoping to swap it for a passive HD6770, but will probably wait for the 7xxx generation to arrive (5750 is adequate for my gaming needs just now).
How about the temps inside the psu though? Even if the psu fan stays at a low speed, it doesn`t mean that all the components inside are adequately cooled, since there are no sensors on each one of them. While the main heatsink could stay cool enough, components receiving less airflow like the secondary capacitors could suffer. At best you`d get reduced efficiency because of the increased temperatures.
The savings on the increased efficiency of a cool PSU will take ages to equal (or justify) the cost of a new case (that basically was my point). A test should be conducted - same components, same fans&flow - different cases (one top-mounted PSU, one bottom-mounted PSU). And then measure the temperature of the air coming out from the PSU.
Perhaps this has been done somewhere? Does anyone have a link?