Can't decide between hd 5770 and hd 4890

[Markxy10]

I have a costum computer which is built around 700$. I have a Asus Eah2600xt 512 mb graphics card installed right now and looking foward to upgrading to something good around 250$. I am unable to decide between hd 5770 and hd 4890.Beacause 4890 has 256 bit memory bus and the other has 128 bit one but 5770 has 1 GHz more Memory Clock. Does the 1ghz memory clock difference or 2x memory bus difference count?

 

[TheViper]

They work together to give you total bandwidth.

At a $250 budget you're just $9 short of the HD 5850.

 

[brockh]

To recommend you an appropriate graphics card we need to know:

(1) Games you play and at what resolution/settings
(2) Total system settings (specifically: processor, power supply, memory)

 

[Markxy10]

My processor is AMD Phenom 8650, a triple core processor, one core is 2.3 ghz
My RAM is 2 x 2Gb A-Data memories
And the power supply is 550 w

I want to play games like GTA 4, NFS: Shift, All point's bulletin ( in the future) and so on

 

[macer1]

also where are you purchasing these from?

country and source?

 

[Markxy10]

what ? the graphics cards ?
well i live in Estonia. and i am going to buy these from www.ak.ee or www.arvutikeskus.ee

Well the page is estonian...
I copy these here to save your time
http://ak.ee/index.php?pid=0&id=11&menyy_id=11&action=look&lookid=88393 <hd5770
http://ak.ee/index.php?pid=0&id=11&menyy_id=11&action=look&lookid=88610 <hd4890

P.S. Take in mind. that 1 $ is 12 EEK or so

 

[TheGreatGrapeApe]

What kind of 550W power supply? Might be tight on the high end HD48xx series cards, the 5770 is a little lighter on the power requirements.

Performance will favour the HD4890, but it might mean a PSU upgrade.

 

[Markxy10]

A Chieftec one