Uttar
12-31-02, 10:28 AM
Hello everyone,
As reported by xbitlabs (http://www.xbitlabs.com/news/story.html?id=1041265473) , the NV31 performance without AA/Aniso is expected to be around Ti4600 levels.
Of course, that doesn't seem too good. But it is, however, a lot better than it seems.
Mufu said in another thread one model will be clocked at 350Mhz and the other one 450Mhz. I've got no idea if that's true, but it seems very logical. So I'll assume it's true.
Thus, the first question is which model got Ti4600 performance. Actually, I think it's slightly more complex than that.
Performance is "comparable" to the Ti4600. And 450Mhz is 128% of 350Mhz
Thus, it would seem logical to say that one model will have performance slightly lower than the Ti4600, and one model will have performance slightly higher than the Ti4600. Let's assume the difference is similar to see what that approximatively means ( it certainly won't be the case )
Then, the 350Mhz model would have 87.5% of the Ti4600 performance and the 450Mhz model would have 112.5% of the Ti4600 performance.
Furthermore, there's Antialiasing and Anisotropic filtering.
I'm assmuing the NV31 will use similar Intellisampling algorithms to the NV30, but with a DDR1 memory system ( DDR2 for a +- $199 part is overkill )
Now, for the aniso hit, we could assume that with 8X, it would be equal than the R300's 16X Performance, with 16X Quality IQ. This seems pretty much right to me. Why? AFAIK, The NV30 algorithm is able to intelligently choose between Trilinear and Bilinear, unlike the R300's. And its algorithm respects IQ more according to nVidia. But then again, all of that might be marketing BS ( let's see that in the NV30 reviews... )
The AA hit, however, is more complex. The NV3x is all about 4X AA. And everything is made with 128 bit in mind. And there's color compression. And so on. So, I guess a hit similar to the Radeon 9700 ( 256 bit bus ) might be reasonable. But it might be slightly less, if Color Compression truly does miracles ( and NV30 reviews will tell that )
So, considering all of that, it sounds like AA/AF performance of the NV31 450Mhz is approximatively similar to the Radeon 9700 performance.
The only difference being it's expected to cost less.
Which is why ATI is releasing the RV350
It sounds like ATI doesn't really want to increase performance with the RV350. It sounds a lot more like Radeon 9700 performance with Radeon 9500 Regular MSRP ( $179 )
What's for nearly for sure now is that the NV31 will be better than every of ATI's current solutions. But the RV350 remains a powerful competitor, and it's hard to say right now if it's going to do its job right.
Uttar
As reported by xbitlabs (http://www.xbitlabs.com/news/story.html?id=1041265473) , the NV31 performance without AA/Aniso is expected to be around Ti4600 levels.
Of course, that doesn't seem too good. But it is, however, a lot better than it seems.
Mufu said in another thread one model will be clocked at 350Mhz and the other one 450Mhz. I've got no idea if that's true, but it seems very logical. So I'll assume it's true.
Thus, the first question is which model got Ti4600 performance. Actually, I think it's slightly more complex than that.
Performance is "comparable" to the Ti4600. And 450Mhz is 128% of 350Mhz
Thus, it would seem logical to say that one model will have performance slightly lower than the Ti4600, and one model will have performance slightly higher than the Ti4600. Let's assume the difference is similar to see what that approximatively means ( it certainly won't be the case )
Then, the 350Mhz model would have 87.5% of the Ti4600 performance and the 450Mhz model would have 112.5% of the Ti4600 performance.
Furthermore, there's Antialiasing and Anisotropic filtering.
I'm assmuing the NV31 will use similar Intellisampling algorithms to the NV30, but with a DDR1 memory system ( DDR2 for a +- $199 part is overkill )
Now, for the aniso hit, we could assume that with 8X, it would be equal than the R300's 16X Performance, with 16X Quality IQ. This seems pretty much right to me. Why? AFAIK, The NV30 algorithm is able to intelligently choose between Trilinear and Bilinear, unlike the R300's. And its algorithm respects IQ more according to nVidia. But then again, all of that might be marketing BS ( let's see that in the NV30 reviews... )
The AA hit, however, is more complex. The NV3x is all about 4X AA. And everything is made with 128 bit in mind. And there's color compression. And so on. So, I guess a hit similar to the Radeon 9700 ( 256 bit bus ) might be reasonable. But it might be slightly less, if Color Compression truly does miracles ( and NV30 reviews will tell that )
So, considering all of that, it sounds like AA/AF performance of the NV31 450Mhz is approximatively similar to the Radeon 9700 performance.
The only difference being it's expected to cost less.
Which is why ATI is releasing the RV350
It sounds like ATI doesn't really want to increase performance with the RV350. It sounds a lot more like Radeon 9700 performance with Radeon 9500 Regular MSRP ( $179 )
What's for nearly for sure now is that the NV31 will be better than every of ATI's current solutions. But the RV350 remains a powerful competitor, and it's hard to say right now if it's going to do its job right.
Uttar