Report: graphics cards and thermal characteristics
by Damien Triolet
Published on April 20, 2010
GeForce GTX 285
We weren’t able to test the GeForce GTX 280 as for some reason it seems to be incompatible with the motherboard for this test system. No problem however with the GeForce GTX 285 which is similar to the GeForce GTX 260 and 280 but uses a GPU that is slightly less demanding in terms of energy as it is engraved at 55 nm rather than 65. In terms of the cooling system, the two are quite similar except for the fact that here the casing at the back has disappeared.
System in idle.
System in load.
Graphics card in idle.
Graphics card in load.
It behaves quite like the GeForce GTX 260. In idle the card stays cool. In load it heats up faster than the GTX 260 but this doesn’t affect the system as a whole very much. The only reason we can imagine to explain this phenomenon is that the metalic casing is absent from the back and this means that card loses less heat from here. Although the back of the PCB is hotter, this heat is however transferred less to the chipset and the CPU.
Temperature and noise level readings
The card is a little quieter than the GeForce GTX 260 both in load and idle. This does not however affect temperatures, which are lower in spite of everything else.