da leggere:
http://www.digit-life.com/articles2/...00-dx9-p2.html
interessante il test HIDDEN SURFACE REMOVAL, un pò sotto la metà della pagina:
Quote:
Isn't it shocking?
1. The HSR ...
2. It does work (HyperZ) in all the RADEON 9700 and RADEON 9500 PRO chips and demonstrates a perfect performance. But it is not supported in all RADEON 9500 chips! It's disabled, and probably on the driver level again. Why? Maybe, for creation of an additional difference in real applications? But the more believable version is that there are some defects in the die, and that is why they are used for cards on the RADEON 9500. Besides, to make performance lower relative to the RADEON 9500 PRO and 9700, such dies have half of their pipelines disabled. In the first part we discussed the problem of turning the RADEON 9500 into RADEON 9700 (9500 PRO) with the RivaTuner, i.e. on the software level. The following events showed that it's not so smooth as we wanted it to be. First of all, not all R9500 chips work without artefacts after the redesigning, about 28% have bugs which indicate some problems in the HyperZ unit. Isn't it the unit that controls the HSR? I think that ATI disables the crippled HSR unit on the software level with half of the pipelines and then uses such chips as RADEON 9500.
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