IBM 486DLC (Blue Lightning)
The 486DLC is a fully 32-bit version of the 486SLC, with 1.4 mln transistors on the 82mm² die and 0.8 µm CMOS. It came in a 132-pin QFP package. In July, 1993 IBM produced clock-doubled and clock-tripled versions of the chip, the 486DLC2 (486BLX2) and the 486DLC3 (486BLX3) respectively. The chips were available from 50 to 100 MHz and were sold by IBM only.
IBM later marketed Socket 3 168-pin PGA Blue Lightning 486 CPUs, but these are technically not related to earlier Blue Lightning models as they are based on the Cyrix Cx486 CPU core.
Read more about this topic: IBM 386SLC