Best GPU for gaming with minimum Power requirement...

[harsh321]

I hav a 450watt PSU
+12V rail is 25A rated....
i hav ordered a new PSU crosair 600w (GS600) and ATI radeon HD6750 DDR5
can i get a better GPU that can work on my old PSU??

 

[vmem]

you can try a radeon 7770. it has extraordinarily low power consumption

here's one for a good price. but any company will do
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102967

 

[InvalidError]

You could get a 6670, the fastest GPU currently on the market that does not extra power from 6/8-pin PCIe power cables. As vmem suggested, a 7770 should also be well within a 450W PSU's capabilities if it has at least one 6-pin PCIe cable.

 

[harsh321]

my psu dosen't have a 6pin....should i go for HD7750...rather than HD6670

 

[e56imfg]

Yea, the 7750 is the fastest card w/out the need of external power. It also consumes less power than the 6670.

7750 = 55W TDP
6670 = 66W TDP

 

[Sunius]

Yea HD 7750 is a better choice than HD 6670.

 

[InvalidError]

my psu dosen't have a 6pin....should i go for HD7750...rather than HD6670

A 7770 should work too, worst case you may need to use a molex-to-PCIe adapter which is perfectly adequate since the 7770 would only be 5-10W over the PCIe slot's power budget at most.

 

[nukemaster]

My 2 cents here. Have a 5770 on a 300 watt power supply(mind you the parts had been picked for low power consumption as well) without issues. The 7770 takes less power so unless it is a real bad no name 450 watt psu(you have to watch for those 450-500 watt units with under 250 watts on the 12 volt rail....), it should work

 

[vmem]

A 7770 should work too, worst case you may need to use a molex-to-PCIe adapter which is perfectly adequate since the 7770 would only be 5-10W over the PCIe slot's power budget at most.

+1 ^

I can't imagine a molex-to-PCIe adapter not working in this situation...