GTX 650/750 Compatibility

BuBu Shofronea

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Are the next graphic cards compatible with the next PC specs ?

Motherboard : Foxconn G31MX Series

Power Supply :iNTEX Smart Switching Mode Power Supply
Enhanced Pentium 4 ATX2.03 450 Watt
AC Input : 220 VAC 4A 50Hz
DC Output : +5V 40A ; -5V 0,5A
+12V 20A ; -12V 0,5A
+3,3V 28A ; +5VSB 2A

The gaming graphic cards i want to buy :
-Asus NVIDIA GeForce GTX 750 OC, 1024MB, GDDR5, 128bit, HDMI, DVI, VGA, Dust-Proof Fan
-Gigabyte NVIDIA GeForce GTX 750 OC, 1024MB, GDDR5, 128bit, 2x HDMI, 2x DVI
-Gainward NVIDIA GeForce GTX 650, 1024MB, GDDR5, 128bit, HDMI, DVI, VGA
-Asus NVIDIA GeForce GTX 650 DircetCU, 1024MB, GDDR5, 128bit, HDMI, 2x DVI, VGA
-MSI NVIDIA GeForce GTX 650 OC, 2048MB, GDDR5, 128bit, HDMI, DVI, VGA
-Asus NVIDIA GeForce GTX 650, 2048MB, GDDR5, 128bit, HDMI, DVI, VGA, Dust-Proof Fan

ALSO : Please tell me which one of them is the best for gaming

Thx for allowing a part of your time to solve my issue :)
 

BuBu Shofronea

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Well.. i meant choosing from the ones above, in my list, not other models.. out of my price range X(
 

BuBu Shofronea

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Thx for support but the other graphic cards listed above aren't compatible ?
And is this the best from the list ?

Thx a lot for support again :)