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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Scumbria who wrote (36449)	8/28/1998 2:47:00 PM
From: Tenchusatsu	Respond to of 1583633

It depends on the quality of the image you are trying to render. High resolution images need double precision math. Doom doesn't. This will perhaps be very useful to Tanner, the successor to the Deschutes Xeon. x86 processors have always lagged in floating-point, thus making it a less than stellar choice for graphics workstations. Perhaps KNI will be crafted to serve not only the 3-D gaming market, but also the graphics workstation market as well. It makes sense. But this is an AMD thread, so does anyone have inside info on AMD's K7? Also, does anyone know whether Intel's competitors will be introducing extensions to the 3D-Now instruction set? Tenchusatsu

To: Scumbria who wrote (36449)	8/28/1998 11:02:00 PM
From: Maxwell	Read Replies (2) \| Respond to of 1583633

Scrumbia: <<I have to wonder at the usefulness of double-precision SIMD in 3-D apps and games. It depends on the quality of the image you are trying to render. High resolution images need double precision math. Doom doesn't.>> You are full of it. Even with single-precision SIMD you can do high resolution. Most users would be very happy to use 1024X780. Beyond that the human eye cannot resolve it. Double-precision doesn't add anything in this case such as 3D games. It doesn't even add to performance. As a matter of fact it slows it down due to 64bits calculation. Double precision may comes in when alignment are important such as high performance CAD where each coordinate is absolutely needed at very fine resolution (only can be seen by zooming in and out). KNI is not needed for the mass. Maxwell