AMD K6-III (K6-3) processor families

K6-III (sometimes called K6-3) microprocessor family is based on AMD K6-2 family and improves it by adding an integrated on-die 256 KB level 2 (L2) cache. K6-2 microprocessors utilize L2 cache located on a motherboard - this cache runs at bus frequency, i.e. at 100 MHz at most. Integrated L2 cache on K6-III processors is much faster as it runs at processor frequency. As an added bonus, the L2 cache located on a motherboard works for K6-III CPUs as L3 cache. In general, integrated L2 cache on K6-3 processors greatly improves their performance - by up to 20% and more.

There are a few variations of K6-III microprocessors that target different segments of computer market:

  • Mobile - K6-IIIP and K6-III+
  • Desktop - K6-III
  • Embedded - K6-IIIE+

All desktop and some mobile AMD K6-III processors are made on 0.25 micron technology. All embedded and mobile K6-III+ microprocessors are manufactured using 0.18 micron technology. The 0.18 micron processors have lower core voltage, run cooler than 0.25 micron CPUs, and usually overclock better.

Use the filter below to display families that have specific feature(s) incorporated:
Desktop Embedded
BGA349 Socket 7
66MHz 95MHz

List of K6-III families

AMD K6-III 333 - AMD-K6-III/333AFR

333 MHz
321-pin ceramic staggered PGA

Picture of: AMD K6-III 333 - AMD-K6-III/333AFR

AMD Mobile K6-III 366 - AMD-K6-III/366AFK

366 MHz
321-pin ceramic staggered PGA

Picture of: AMD Mobile K6-III 366 - AMD-K6-III/366AFK

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At a glance

32-bit microprocessor
Technology (micron):
0.18, 0.25
Frequency (MHz):
333 - 550
L2 cache size (KB):
Socket 7
Super socket 7