Need New Power Supply

baileywhite1998

Honorable
Jul 12, 2013
18
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10,510
I was given an unfinished computer that needs a new power supply. The current one doesn't seem to be powerful enough. The computer won't always start, and it won't power everything at once. I do not have any info on the CPU, motherboard, or the video card, so I don't know what I need to get. It isn't a powerful system, an unknown cpu and motherboard, an old very basic graphics card, hard drives, and fans. I do know that the case was built in 2004. Also I don't know about compatibility with newer Power Supplies, and what is in the computer now. Here is a picture of the chart on the current Power Supply https://plus.google.com/photos/107277368584058760634/albums/5899908847101897585?authkey=CO3YpP7QupDV5AE. I need to know what to look for. I would love a recommendation.
 
Solution
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207023

XFX P1-750X-XXB9 750W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply

+ $15 off w/ promo code EMCXNXL25, ends 7/15


$79.00 SEASONIC made PSU.

This will do the job.
I get a page not found.
It is difficult to recommend a PSU without knowing the rest of your parts though. Does the graphics card need no more than a single power connector (or none)? If it needs one or none, then a 380W Antec Earthwatts will power your system. It will cost around $45. There are certainly other options, some of which may be cheaper too, but the EA-380D has been a reliable "go-to" unit for me for years in basic builds.
Edit: ok, working now. That looks like one of the early Rosewill RG units. Unless it has failed, there should be no way it doesn't have enough power for a computer with a single graphics card.
 
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207023

XFX P1-750X-XXB9 750W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply

+ $15 off w/ promo code EMCXNXL25, ends 7/15


$79.00 SEASONIC made PSU.

This will do the job.
 
Solution

I can't get info on the components. They are unmarked. No way to find them online.
 


It just plugs into the motherboard, that's it.
 


So you believe this will work? I assume you were able to see the picture.
 


I think I am going to try it.
 
just do what SR-71 Blackbird says. he is one of the most respected guys on this forum. the above recommendation made by
SR-71 Blackbird is good for almost any kind of build and I looked at your old PSU and this one is better in every way and a fair price
 
The primary determinant of how much power a PC needs is the graphics card(s). If yours does not need a separate power cable plugged into it, then it needs no more than 75W, and probably less. Even if you've got an old 130W CPU, the 380W Earthwatts will run your system. Whoever put the much bigger Rosewill in there probably thought the system needed a lot more power than it does, OR was planning significant future upgrades. The 750W Seasonic-built XFX is a nice PSU, but way bigger than you're likely to need. They have a 550W model as well, which would be cheaper while offering the same quality.
Carefully look over the motherboard for bulging or leaking capacitors. Google "bad capacitors" for some helpful images. If you find any, the motherboard is toast, and no PSU will let it work again. Motherboards can be "re-capped" if you are skilled with a soldering iron and can identify and obtain replacement capacitors, but as old as it is it makes more sense to replace the motherboard if that is its problem.
 
That old PSU is a Rosewill Green Series RG630-2 630W that has been discontinued.

If you were able to provide us with a picture of your power supply unit why don't you take a picture of the internals of your system like the motherboard and graphics card?
 
The RG series reviewed well, and probably marked the point where Rosewill decided to stop offering junk PSUs. Any PSU can fail, but before arbitrarily replacing that one, it would be a good idea to try and rule out other problems. A local shop may be able to help you with some diagnostic testing without charging you an arm and a leg.
 


I looked and the capacitors seemed to be fine. Also it did start for a wile, and still will start every now and again. When I got it the man told me that the power supply needed replacing. Also the current one is 630w, so why go way lower? I am going to upgrade the graphics card, ram, and add a bigger hard drive and add an SSD either way.
 


That's the same picture of your power supply unit's label that you posted earlier.