The Savage4 was a Savage3D with an extra texture unit. The Savage4 Pro chip increased clock rates, upped the memory to 32MB, and added AGP 4x support. The Savage4 Xtreme increased the clock rates even more, removed the TV-out, cleaned up a few unneeded gates, and improved the S3TC technology. The new Savage4 Xtreme design also lowered S3's production costs by a significant amount.
The original Savage3D only had a 90MHz core, and 100MHz memory clock speed. The Savage4 Pro only had a 110MHz core and 143MHz memory clock speed, but you could overclock it up to 143/143.
The Savage4 Xtreme retail will feature a 166MHz core speed and a 166MHz memory clock speed. The OEM version will feature a 166MHz core speed with a 143MHz memory clock speed. That translates into 6ns memory for the retail version and 7ns for the OEM.
[break] Ook hebben de jongens van FiringSquad wat info los weten te peuteren over S3's Next Generation chip, de GX4.[/break]
Looks like S3 isn't content with going after the budget consumer after all. The "GX4" is the code name for S3's next generation 3D accelerator. There isn't much information available about the chip, but it was rumored to have onboard transformation and lighting.
We asked Paul and Mark about the GX4, but they were pretty tight lipped about their baby. They confirmed that the GX4 does indeed have onboard T&L, and that they want it out in time for the holiday season. They also said that they're putting all their efforts behind the GX4, and it should be right up there with the next generation products from Nvidia and 3dfx. They didn't say anything about the manufacturing process, but everyone knows that S3 has .18 micron capabilities and we wouldn't be surprised if the GX4 takes advantage of it.