AMD · K6-III · 1999 · Super Socket 7
The AMD K6-III 400 is a desktop processor with 1 core, released in 1999 at an MSRP of $195. It is part of the K6-III lineup, using the K6-III platform, and fits the Super Socket 7 socket. Internally, it is built on the "K6-III" architecture. It operates at a fixed 0.4 GHz. AMD manufactures the "K6-III" silicon on a 250nm process node. This processor supports SDRAM memory. With a TDP of 21W, the K6-III 400 is an efficient chip suitable for modest cooling solutions. This processor has no integrated graphics — a discrete GPU is required. The cache hierarchy consists of 64KB of L1 and 256KB of L2 cache. There is no L3 cache on this processor.
Launch K6-III (February 1999) — AMD's first CPU with on-die L2 cache. The 256KB full-speed on-die L2 was a major advance. The existing motherboard SRAM (typically 512KB) automatically became a third-level L3 cache, making the K6-III one of the first CPUs with a 3-level cache hierarchy.
| Brand | AMD |
|---|---|
| Family | K6-III |
| Series | K6-III |
| Architecture | K6-III |
| Type | Desktop |
| Launch year | 1999 |
| Cores | 1 |
| Threads | 1 |
| Base clock | 0.4 GHz |
| Boost clock | 0.4 GHz |
| L1 cache | 64KB |
| L2 cache | 256KB |
| TDP | 21W |
| Socket | Super Socket 7 |
| Process | 250nm |
| Memory type | SDRAM |
| Integrated graphics | None |
| Chipsets | VIA Apollo MVP3, VIA Apollo MVP4, SiS 5591, ALi Aladdin V |
| Launch MSRP | $195 |