Do I need a new power supply? If so what do you recommend?

SpartanSpurs

Honorable
Dec 24, 2012
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I have a i5 2500k OC'd to 4ghz, GTX660, SSD, HDD, 8GB of 1600Mhz ram and a 500W Mushkin PSU.
I bought the PSU when I first built my PC and it was much lower spec so I had no problems, but since I upgraded my GPU from a 550ti to a 660 my PC has randomly started restarting in some games. It's isolated to games that are more demanding on the system too.
So is this likely being caused by the PSU? None of my components ever reach temperatures above 50°c because I have water cooling so it isn't overheating.
If it is what PSU would you recommend?
I've had a look at these and I would prefer not to go over £60 but if you recommend it I'll have to consider, so far I've found these.
http://www.amazon.co.uk/Corsair-CX750-Builder-Series-Bronze/dp/B008RJZR40/ref=sr_1_1?ie=UTF8&qid=1370591757&sr=8-1&keywords=corsair+750w
http://www.aria.co.uk/SuperSpecials/Other+products/600W+Corsair+Builder+Series+600CX+80PLUS+Bronze+Power+Supply+?productId=52662
 

thasan1

Honorable
Mar 27, 2013
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11,660
go with CX600, 750watt would be overkill.your system shouldn't be using no more than 350 watts. so even at full load it will be using almost half of what the 750 PSU can provide so, PSU will be less efficient. imo, you should go with CX500 rather than CX600 or 750
 


Hi - No need to spend £15 xtra for the 750. The 660 use only a small amount more power than
the 550ti. Your problems are more likely the suspect quality of the 500w unit you now have, many
fringe brands lie and exaggerate their specs.

The cx600 you linked above is more than sufficient for your system even if you OC & add
some more peripherals. I would only go higher & more costly PSU if you plan to add
another GPU for SLI and even then the cx600 is enought for 2 660's.