I need a new GPU

Guru3D measured 92 watts and recommends a 450 watter if CPU and GPU are at stock speeds.

http://www.guru3d.com/articles_pages/nvidia_geforce_gtx_750_and_750_ti_review,5.html

Here is Guru3D's power supply recommendation:

GeForce GTX 750 - On your average system the card requires you to have a 450 Watt power supply unit.
GeForce GTX 750 Ti - On your average system the card requires you to have a 450 Watt power supply unit.

If you are going to overclock GPU or processor, then we do recommend you purchase something with a bit more stamina.

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Pretty much any upgrade is limited by your PSU


 

menetlaus

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Jul 19, 2007
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why bother with a 750 Ti as upgrade to a 650? it is hardly much of an upgrade as is very similar in performance.

I'd say since you have a 650 already, you will probably need a bigger PSU in order to get a good enough GPU to see much of an improvement in graphics performance. Sorry.
 
Here's a review by techpowerup on power consumption.



The GTX 750 Ti is much better than a GTX 650.