Sad to see people upgrading to newer hardware and ending up frying em cuz they didnt pay attention to one of the most important peices of hardware for a computer.
Ditto. and don't just consider the size of the PSU. but also its age. even if it is plenty large enough, if it is 2 or 3 yrs old I would recommend replacing it.
PSU's lose output ability over time, a nice 750W 60A for example may be nothing more than a junk 525W 40A after 2 or 3 yrs. especially if it is a run of the mill average PSU and not from a high quality manufacturer, or if it is run at close to peak output most of the time.
do yourself a favor and browse around jonnyguru.com find your PSU or at least a couple from the same manufacturer and see what jonny has to say about them. dude knows his shit with PSUs and tests the hell out of them. if you can't find your PSU or others from the same manufacturer with ratings of at least 8 or better ditch it and replace it even if it is only 3 months old. Jonny won't recommend a PSU unless he can rate it 9 or better after extensive testing.
4 things to remember about PSU's
1. IT IS NOT ALL ABOUT THE WATTS....YOU ALSO HAVE TO CONSIDER THE AMP OUTPUT. the same wattage can be configured to a wide range of AMP output.
2. buy ONLY top quality brands...research at places like JonnyGuru. My personal fav...PCPOWER & COOLING.
3. NEVER FOR ANY REASON, use a PSU that came with a case you bought for a build your own tower. they are ALWAYS the cheapest piece of crap the case manufacturer can get.
4. replace at least every 3 yrs
Heed the warning...the PSU is the SINGLE MOST IMPORTANT component in the system.
Failure to heed the warning....sooner or later you will lose system components to poor quality and/or aging / under powered PSU's, some poor quality PSUs have even been know to catch fire. usually the video card is the first to go due to being the single most power demanding component, however you can also lose mainboards or CPUs t the same time.