Need a new power supply for my GTX 750Ti

Spastic

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Mar 29, 2014
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Last Christmas I was gifted an HP 500-164 Desktop which is all around a pretty good mid-level gaming desktop, however I wanted to beef it up a bit so I got the Nvidia GTX 750Ti Graphics card. However, I should have done more research because the GTX 750Ti requires 300 clean watts from a power supply and my integrated power supply just barely clears the minimum, so i'm going to have to get a better power supply. Considering my goal is to simply have a power supply that is good enough to run this card, what's a cheap one that's compatible with my computer?





Also, whenever I put my graphics card in my computer it doesn't even recognize that I have added a card. Not in my device manager or in my BIOS. I have also tried all of the steps listed here

(http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&dlc=en&docname=c03653200&lc=en&jumpid=reg_r1002_usen_c-001_title_r0004)

and it didn't work for me. I know I need a new power supply anyway, but if my computer's not even recognizing the graphics card isn't that a separate issue?
 
The graphic card also requires 6-pin pci-e connector to power which i guess doesn't come with the built-in power supplies. What is your budget? I have an expensive power supply and a normal power supply, i need to know your budget so that i can tell which psu will suit the best.