Acer Ali M1217 386sx / Ti486SXLC2 66MHz motherboard cpu 1992.

Fast late model 386SX motherboard & CPU. 1992 Motherboard. CPU replaced with a Ti486SXLC2-50.

MOTHERBOARD:
Acer ALI M1217 chipset
Max DRAM 16MB, 30 pin SIMM, fast page
Bios Supports Slow Refresh

CPU:
Ti486SXLC2-50 CPU, 8KB L1 internal cache
25mm heatsink & fan

FPU:
REVEAL by Cyrix 387sx

One owner since ~1995. Stored indoors unused until ~October 2023, then upgraded with the Ti486 CPU.

Working. 

CPU boots with cache disabled and not clock doubled. To enable, run the Cyrix utility with "cyrix.exe -cd -b- -f -m" (https://www.cpu-galaxy.at/download/cyrix.zip)

Very fast. 3DBench and Doom is 3x faster than the original CPU (33MHz 386sx).

Motherboard info: https://theretroweb.com/motherboards/s/unknown-612-3035-001
Chipset manual for ALI M1217 (embedded version m6117d): https://theretroweb.com/chipset/documentation/m6117d-627297a363614522658385.pdf