jojesa :
Yes, you should go with the GTX 460, it will match the E7600.
But if you will be upgrading your system in the near future, then go with a newer GPU like the GTX 1050 and you could reuse it.
geofelt :
What is your psu?
GTX460 is very old and hot tech that will need a 500w psu or stronger.
It is probably too slow for gaming.
A GT1030 might be the weakest card that would be considered a gaming card. It is stronger than GTX460.
A GTX1050 might be appropriate if you like fast action shooters. Either will run with a 300w psu.
The PSU is good. It's an LC Power 600w one which i bought new. It holds up well and i've used a couple of cards with it, no problems at all. Has a descent output and doesn't deliver about 200w or something, perhaps 450 atleast.
As i said, i'm really going budget on this. However, i won't be playing any newer titles any time soon because of the processor and the RAM limitation which is capped on 4GB. I'd mostly play CS:GO, Dota, WoW and some older titles such as Black Ops 1, 2, Skyrim, Witcher 2 in which some of these already work flawlessly but i'd like to play them ALL perfectly.
Would a GTX 460 or 470 be good for that?