I had been doing some thinking about this generation of video cards and Nvidia's execution of the GF6 and 7 series. The fact that they had SM3.0 capable parts for both these generations has allowed them to fill out their product lineup with new SKUs based on NV4x chips without sacrificing features.
ATI OTOH has only just now introduced SM3.0 capability with the R5XX generation, so needed to come out with a whole new family of chips to cater to each market segment. Come spring, however, ATI will be in the same position Nvidia was when it launched it's GF7 cards. Could they be planning on following a similar strategy when they launch R580?
Here's where it entered my mind that ATI may have had incentive to hold back the performance of the R520 parts so that they would be good enough to grab the performance crown, but not too good giving them room to fit 2 SKUs of R580-based products above the X1800XT.
This would explain why X1800 cards seem to overclock so readily. This chip may have reserves of performance that ATI actually chose not to tap.
Anyway, there are plenty of other reasons why ATI may have wanted to limit the clocks on the X1800 (improved yields, better thermal profile, etc.), but if come Spring ATI introduce 2 or more R580 based parts that just happen to slide in right above the X1800 cards in performance.....
ATI OTOH has only just now introduced SM3.0 capability with the R5XX generation, so needed to come out with a whole new family of chips to cater to each market segment. Come spring, however, ATI will be in the same position Nvidia was when it launched it's GF7 cards. Could they be planning on following a similar strategy when they launch R580?
Here's where it entered my mind that ATI may have had incentive to hold back the performance of the R520 parts so that they would be good enough to grab the performance crown, but not too good giving them room to fit 2 SKUs of R580-based products above the X1800XT.
This would explain why X1800 cards seem to overclock so readily. This chip may have reserves of performance that ATI actually chose not to tap.
Anyway, there are plenty of other reasons why ATI may have wanted to limit the clocks on the X1800 (improved yields, better thermal profile, etc.), but if come Spring ATI introduce 2 or more R580 based parts that just happen to slide in right above the X1800 cards in performance.....