S3 has announced their Savage4 Xtreme graphics cards today, which will run at 166 MHz, and cost a reasonable $99 - $129. Here's some more tech specs, ripped from the press release:

Combining advanced 166MHz memory and engine clock speeds with a faster OpenGL ICD, S3TC technology, 32MB memory support, digital flat panel support and unmatched DVD quality, S3's Savage4 Xtreme 166 delivers ultimate price/performance for the $99-129 retail graphics market. For OEM and system integrators, S3 also offers the Savage4 Xtreme 143. Featuring a 166MHz memory clock and a 143MHz engine clock, the Savage4 Xtreme 143 is an optimal solution for lower cost designs.