Hey guys, i know, im new here, but i usually read many post.
I'm just wondering how my gtx 280 can work at full load without any freeze or crash, i have an Thermaltake 450W with 29AMP Max out on the12v rails.
My setup is:
i3-2100, stock fan
2x4gb cosair DDR3 (1333mhz)
Asus P8H61-M LX
eVGA SSC2 GTX 280 (1gb) / stock (648gpu/1161memory)
2 HDD (WD 2TB,320gb)
4 USB on use
8cm FAN x2 (4 in total, the power supply have 2)
1920x1080p led monitor.
Suposedly, the gtx280 requires 40A (can't find official sources, just forum posts), and I'm pretty sure my current PSU does not meet the 40A mark. Here's my Aida/Everest report, stating the power comsuption.
FULL USE (100% fan, 99%gpu,890mb)
59.27A (sorry about that)
I ran a few benchmarks and everything seems fine, Windows experiencie, 3DMark Vantage, 3DMark 06 (benchmark), Cinebench GPU/CPU, Passmark, everything. The PSU does not overheat at all.
My question is, how can this be? my PSU shouldn't be able to handle it, where is it getting the required power to run?
The GTX280 has a TDP of around 236w. (12v x 14A)+(12v x 15A) = 348w.
Thats's the power for the CPU, GPU and other components which explains how you can run it. The 40A thing is just a recommendation for optimal performance.
GTX 280 is rated at 236W
Core i3 2100 TDP is 65W
Allow 40W for other components
Total = 355W
Most of this is on the +12V rail, so up to 30A on the combined +12V rails.
Rating on your power supply is 29A
You are running the power supply at its absolute limit.
Not only that but Thermaltake make garbage power supplies.
I guess you got lucky, 99 out of 100 other power supplies off the same production line would have died long ago.
You really want a better quality supply rated at least 37A on the +12V rail to stay under 80% of rated capacity.