Quote: "do you know whats funny? The Dawn demo runs 15% faster on the 9800pro than the NV30. "
OH PLEASE! ... i'll break this down for you
1) nv30 is equal speed to the FX5200 (nv34)
2) the nv30 specification in Cg DOES NOT WORK with ATi Cards
3) the nv30 specification work to a 32bit FP mode, wereas ATi Cards can only handle 24bit FP
4) the instruction lengths are 114 lines over the ATi Card limit
so not only is the top range card, out performing the runt of the family by a measly 15%
but you'd of had to have lost precision in colour and depth and added lines to compensate for ATi's short commings, recoded for the R300 format ... and ontop of that had to have dropped quite and ammount of code just to fit it all onto ther ATi GPU.
Oh yeah the ATi cards are obvious monsters, maybe i should replace my FX5900 ultra with my boxxed 9800pro as soon as i get home, you have converted me... :: rolls eyes ::
the FX5200 against 9600pro in OpenGL the FX will beat the Pro card marginally, but consider the fact that in DirectX you run the same shader and the 9600pro will outperform the FX5900 Ultra ... and you can be using the same Cg script and the Cg Interface.
what exactly does that say to you? particularly the 20% speed drop in all FX based cards since 9.02 was released?
nVidia are releasing thier DetFX 50 very soon, and it reclaims the speed so all of thier cards are on par with the ATi equivilants - which isn't AS good as they should be doing, but atleast it closes the gap in Dx.
to me though seems very very strange how nVidia developed with Microsoft and DirectX for almost a year and a half to get the new DetonatorFX drivers ready and for Cg to be perfect, but yet somehow they're the card that perform badly ... and the real weird thing is that surely thier in-house tests would've shown the chip wasn't ready.
make of that way you will, but a 20% speed decrease since Dx9.02 is not something you just don't notice!