Originally Posted by `br4dz-
650W is more than enough for most computers, unless you're overclocking the crap out of your system, or are trying to run 2x very high end video cards. Hell, on my system I could easily get away with a 500W power supply, even a 450W system if I didn't overclock towards the sky.
Most manufacturers list a certain wattage for their product based on many factors to save their own asses. Those being:
1) Suggest a high enough wattage just in case you have a REALLY crappy power supply that isn't able to produce as much power as the label/sticker says.
2) So if you ever happen to run everything @ 100% load, the PSU won't crap out on you.
3) Older power supplies have less amperage on the +12V rails than newer ones.
With that XFX 650W psu, it'll be able to run stabely if it were ever pushed to 650W. Though, it never will be. When gaming, running multiple intensive programs, or rendering, you'll almost never go beyond 250W-300W with a non-overclocked CPU and a high end video card, yet if you completely stressed both the CPU and GPU, it might ask for 450W, which is still only 70% of the total output of that 650W PSU, more than safe.
Also, there is nothing wrong with corsair PSU's. The majority of their PSU's are built my tried and true Channelwell Tech (CWT) platforms, with some of their top notch PSU's being based on Seasonic platforms. The only corsair PSU's to stay away from are the super cheap, and low wattage ones (like the gamer series).
I don't dislike Corsair - just the price at the moment.
Trying to get value for the money, some people can just throw money and overpay just because - but in my logic it doesn't make me do this. For me to "really" spend it's got to be justified in my eyes.
Anyways, I've been looking at reviews for the XFX 650 watt and 750 watt in which unfortunately there's no lack of them with the PSU fan making clicking noises very shortly after turning it on in the first days and many RMA's from such people. Do I take a chance? Maybe. I've also seen even better deals on these particular PSU's in the past.
I have two computers - my signature rig listed in the system specs that has a Zalman PSU that I've had no problems with and then my AM2 5000+ system in which an older 420 watt Truepower Antec showed signs of instability to which was confirmed when pulled it out and opened it up to find 3-4 caps slightly bulged and leaking. So I had another spare older Antec 420 watt Truepower which I haven't used in "eeeons" and opened it up to find that one of the caps have a slight leak but proceeded to install it anyway. It for now works fine as I'm typing this from that computer however I KNOW that it's time will come soon enough. So hence I'll take out the 500 watt Zalman PSU from the sig. computer and put it in this second computer and purchase one for the signature computer. This time I want a partial or fully modular PSU of good quality.
In fact both of my computers have photos in my profile.
Thanks for your response and reading this.