I see different Radeon sub-ranks (SE, Vanilla, Pro, XL, XT, XT-PE) for every model but I also find that a lower model with a higher sub-rank can cost more than I higher model with a lower sub-rank.
For example:
1. SAPPHIRE RADEON X700 PCI-E 256MB
Price: $164.45 CAD
http://www.ncix.com/products/index.p...cture=SAPPHIRE
2. SAPPHIRE RADEON X600 PRO 256MB
Price: $176.70 CAD
http://www.ncix.com/products/index.p...cture=SAPPHIRE
So what's better (not specifically these cards) a higher model or a higher sub-rank?