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Help finding a compatible power supply!

Last response: in Components
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October 3, 2013 11:24:44 PM

I made a thread earlier to help me find an upgrade for my PC to improve FPS and was advised to get a new video card which I chose to do. However, the video card I want requires 400W but I currently only have 300 so now I need help finding a power supply compatible for my computer.

Here is the link to my last thread if you guys are interested. http://www.tomshardware.com/answers/id-1824788/replace-...

And here is my power supply specs as found on the power supply. http://imgur.com/lCiDxEx

I've already checked the recommended PSU's on this forum but my main problem is how to know if a power supply will work for my specific computer (that is prebuilt). Here are the specs as provided online for my model: http://support.gateway.com/s/desktop/2009/gateway/dx/dx...

Thanks for any suggestions, feedback, and help.
a b ) Power supply
a b U Graphics card
October 3, 2013 11:46:52 PM

the power supply you have should is more then enough for a 7770, and if it does need a 4 pin connector (some do) you can purchase (or sometimes it comes with) a molex to 4 pin connector.
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October 4, 2013 1:11:14 AM

HillBillyAsian said:
the power supply you have should is more then enough for a 7770, and if it does need a 4 pin connector (some do) you can purchase (or sometimes it comes with) a molex to 4 pin connector.


What makes you say so? the link on newegg http://www.newegg.com/Product/Product.aspx?Item=N82E168... in the details says it requires a 400wat power supply when mine is only 300w.
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Best solution

a b ) Power supply
a b U Graphics card
October 4, 2013 3:31:30 AM

no, see what manufacturers have to do is put the top end of wattage of their cards down SYSTEM wise. The twp of a 7770 is only 106W. Your system has a 300W power supply, and a 2 rail 12V system. The first rail (8A) is just for the cpu, and the 2nd rail (14A) is for the rest of your system. MAX draw would be 106W, your secondary rail will be pushing out the MAX of 168W (to get that you multiply 14A times 12V so 14x12=168) so you have a 62W margin (more then enough to run your hard drives, usb ports and everything) if you have you cpu and gpu running at 100%. Hope that helps.
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