Amien said:
Posting in bold and italics doesn't make you right.
Do you honestly believe that memory speed is the be and end all of GPU performance? And that a 4770 CF will perform better than a 4850 CF when its the faster single card?
Making a choice between the two is simple really, 4850 if you have a good PSU, 4770 if you don't.
actually there are 2 factors
1) DDR5 and DDR3 .. this doubles the band with here 4770 scores a point
256 bit vs 128 bit here 4850 scores the point..
both are affecting the bandwidth (fill rate) directly ,
one doubles and one halfs the bandwidth..
(for argument sake u can say 4770 is marginally better here , i dont know how much it holds)
this is the only thing diferentiating the cards
2)800 vs 640 stream processors.
i seen experts saying 640 is the one which is being used most efficiently.
the difference of 160 is seldom used , and this is the major power saving thing in 4770.
here 4850 has an advantage (this is the advantage what you see in factory settings)
once u over clock 1) becomes dominant and 2 becomes less and less differentiator. given DD5 and 40 nm fab 4770 is more overclockable ( still to hear about 40 nm overclocking issues, they will surface soon).
both are good cards, either of one wont disappoint u.
