Dan's Data heeft een review gepost van de Riva TNT2 Model 64, een gemankeerde versie van de 'echte' TNT2 chipset. Model 64 is net zoals de TNT2 uitgerust met een 128-bits wijde datapijp. De memory bus draait echter slechts op 64-bit:
The TNT2 Model 64 is a good chipset, but it doesn't have a bargain price. For a recently developed chipset it's cheap, but there are dead cheap original TNT cards all over the place, and a 16Mb TNT or even an 8Mb seems likely to score as well as a Model 64 at a given level of overclocking for OpenGL and beat it by a significant margin for Direct3D. And a real TNT2 isn't much more expensive, and looks like a rather better choice if your gaming tastes run to Direct3D.
So this certainly isn't a bad value board - but neither is it all that exciting. Older technology can pretty much match it, and newer tech beats it handily for not much more money. If you can find a Model 64 board at a good price, and it's got as much speed as you need, then buy it. Certainly, if you've got a slower-than-400MHz processor, you won't see the extra speed from a full TNT2 anyway and might as well get the cheaper hardware. But if you're after serious gaming speed, and you've got a fast CPU, you probably won't have to save much longer to get quite a bit more performance.