I just ordered a Diamond hd 4850 (512mb) card...however, I was just looking at some of the specs of the other manufacturers' 4850's, and some specs are better....for instance the Asus one has a memory clock of 1986mhz while my Diamond 4850's memory clock is 993 ....
Actually there really are variations in video card specifications. I found out while researching 4850 cards. I visited several forums sponsored by graphic card companies. There are reference specifications published by the GPU manufacturer. There is a possibility companies selling video cards might improve upon the reference specifications.
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