Windows 7: New system - 5770 or 4890?

I'm looking to build a new decent system for gaming seeing as my old vista system's gpu has died. Should I go for a 5770 or a 4890? The system as it stands is:

CPU: AMD Phenom II 550 Black Edition @ 3.1GHz

RAM: G-Skill Ripjaws 4GB (2x2GB) 1333MHz

HARD DRIVE: Seagate Barracuda 500GB SATA II 7200.12

GPU: Gigabyte ATI Radeon 5770 1GB GDDR5



MOTHERBOARD: Gigabyte MA 785GT-UD3H

OPTICAL DRIVE: Pioneer DVR-218 SATA

CHASSIS: Antec Two Hundred

PSU: Antec True Power New 650w

OS: Windows 7 Ultimate x64 OEM

Performance-wise: HD 4890 > HD 5770.

But since the HD 5770's based on a 40nm chip, it'll consume less power and produce less heat.

The HD 5770's basically a 40nm HD 4870 with DirectX11 support.

Thought so. Drivers should improve so I'll go for the newer card.

Yeah, the 5770 is a better choice overall.

agreed

Done - any last changes before this is built?

Everything looks spot on.

Although, If you plan on overclocking, I'd suggest going for the slightly older but much cheaper MSI 770-C45 (770 NB/ 710 SB). I've heard it overclocks like a champion.

No. Its a system just for games and I can't be bothered overclocking - it has enough power for any games @ 1680x1050, High for Crysis, Very High for mostly anything else. Good upgrade options too.

I was faced with the same delima, 4890 or 5770, for me the 4890 was the better choice. The 4890 kicks the snot out of the 5770 in every category except dx11, and dx11 brings all the 5000 series to their knees. It will be another year before dx11 is widely implemented so you might as well wait for the next generation card to get excited about dx11. Besides that the 4890 costs half as much as a 5870.

Looks like an awesome AMD build to me. It must run cool cause I would expect to see a little more cooling on the chipsets. But that's just my opinion. I think it will definitely serve your needs. I'm also trying to decide on my next build. So I welcome your opinions when I get ready.