4670

what do you all think of the his radeon hd 4670 1gb version?

Dont go for 1Gb as it has lower clock speeds.
Go for 512 MB HIS Iceq Version . That is faster than nithers(atleast a bit).
Instead of going for Crossfire go for a HD 4770. That is a beast at that price.

I would strongly recomment the 4670 Sapphire with DDR4 Memory. I did a lot of research, and found the faster memory helps over the overclock of the HIS Iceq GPU. Also, if you have a well ventelated case, you should not have any problem overclocking the Sapphire DDR4's GPU 30mhz where the HIS is clocked at. There are some pretty good reviews, I will find and post here showing the above. Also what brand is your PSU with only 300 Watt I would suggest strongly the 4670. the 4770 will probably be a bit to much for it.

its a bestec 300 watt psu. It cam with my dell inspiron 530
specs are

intel core 2 duo e7200
4gb ram ddr2
250 gb sata hdd
1 dvd drive

So basically it should work with no problems on this?

Hey it has two 12 V rail each of 18 A i think. Once open the case and confirm it.