help me alienwarex51

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What do you have at the moment? GT 640? If you already have a GTX 660 do you really need to upgrade?
GTX 750 Ti is guaranteed to work in your system due to its insanely low power usage. If you get one with a 6-pin connector and can overclock to around 1.2Ghz then you'll be looking at GTX 660 performance and much much lower power consumption.
According to this thread it is OK: http://www.tomshardware.co.uk/answers/id-2030107/video-card-updgrade-alienware-x51-running-330w-nvidia-geforce-gtx-645-gtx-760-2gb-work.html
Read the final post.
The Asus you have selected is slightly overclocked but not by much.
Anyway - stock 760 is pushing the x51's power supply close to its limits, even the more powerful 330w. If yours is the smaller 240W PSU no way the 760 will work .
Even with the 330w PSU I'd get 750TI for its much better power efficiency, or wait several months for the 860 to appear.
 

fatboyslimerr

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Aug 8, 2013
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What do you have at the moment? GT 640? If you already have a GTX 660 do you really need to upgrade?
GTX 750 Ti is guaranteed to work in your system due to its insanely low power usage. If you get one with a 6-pin connector and can overclock to around 1.2Ghz then you'll be looking at GTX 660 performance and much much lower power consumption.
 
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