My owner-built PC has now succumbed it's second PSU in about 4-5 years. I am beginning to wonder if I am abusing these poor PSU's. The PC includes an Asus Striker Extreme MB, 4GB ram, a dual DVI NVidia GPU with 2 wide-screen monitors, and 4 disk drives. The original-build PSU was an 850W OCZ GameXStream, which last approximately 2-3 years. I don't like to close Windows, so I regularly used the Sleep option. After a while Sleep mode no longer worked properly and I pulled the 850W PSU and installed a 700W OCZ GameXStream. For the last year I have not turned the PC off (except for Microsoft doing monthly Windows Updates, and perhaps once a week to clear memory to get performance back again. I would think that running a PC constantly would be within the operating specifications of a name-brand PSU. I would also expect that starting up a PC would cause more stress on the PSU than running it smoothly and constantly. What say you? Can you recommend a brand of PSU that is capable of running constantly with only bi-weekly or so power downs. Note: I am not a gamer, just a Windows developer, so I am not overclocking or in any other way asking the PC to exert itself unduly. There are a total of 6 fans running constantly inside and in the case walls, so it's not a temperature problem. Thanks for any advice you can offer.
Honestly the dual GPUs and cd drives shouldn't require more than 800watts. The 2 wide screen monitors have there own power source so that's not a draw on the PSU. Since you never turn your computer off it is likely you are just running the PSU's so hard nonstop that they just get worn out. I would say you are abusing the PSUs though. Do you really need the computer on while your sleeping? Is the 30 second to 2 min start up time really going to kill your efficiency? As for a good brand Antec, OCZ are good ones. But if you keep them running non stop I wouldn't expect more than 3-5 years out of it
S3 sleep mode (RAM sleep, the mode that looks like it's turned off but starts very quickly) uses essentially the same amount of power as a soft off (turned off but with the PSU switch on). http://www.tomshardware.com/reviews/power-supply-protec...
As such, you should sleep it at night instead of leaving it on. It'll start very quickly and give the PSU a rest.
Your PSUs really shouldn't be giving out like this, though. Most OCZs, as far as I can tell, have a 3-year warranty, so you should return them when they die.
Unless your two cards are 580s, you're almost certainly never using more than 650W.