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Socket 7: Fit For Years To Come!

Socket7 Triangle: AMD K6-2, AMD K6-2+ And AMD K6-III+, Continued

We compared three different AMD CPUs of the same clock speed. The three processors' underlying model is AMD K6-2/500, which has no on-die L2 cache. The K6-2 communicates via a 100 MHz processor bus with its external L2 cache. Therefore, most motherboards are equipped with 512 kB or 1 MB cache modules that sit close to the socket. Some rare motherboards such as the FIC PA-2013 or DFI P5BV3+ even utilize 2 MB of cache.

ProcessorAMD K6-III+AMD K6-2+AMD K6-2
Process technology0,18µm0,18µm0,25µm
CPU clock400 to 500 MHz475 to 550 MHz300 to 500 MHz
CPU platformSocket7Socket7Socket7
CPU system clock100 MHz95 to 100 MHz66 to 100 MHz
L1 cache64 kB64 kB64 kB
L1 cache accessCPU core clockCPU core clockCPU core clock
L2 cache interface64bit64bit64bit
L2 cache256 kB on-die128 kB on-dieon the motherboard, max. 2048 kB
L2 cache clockCPU core clockCPU core clock66 to 100 MHz
L3 Cacheon the Motherboard, max. 2048 kBon the motherboard, max. 2048 kBno
MMX instruction setyesyesyes
3D instruction set3DNow3DNow3DNow
Multiprocessor supportnonono
Power saving modesPowerNowPowerNowno
Core voltage1.4 to 2.0V1.4 to 2.0V2.2 to 2.8V
I/O voltage3.1 to 3.3V3.1 to 3.3V3.1 to 3.5Volt
Power dissipitationmax. 23Wmax. 20Wmax. 29W

There's a fundamental difference between new K6-2+ and K6-III+ CPUs and older K6-2 models. For using up-to-date PowerNow technology, you need a special motherboard with voltage regulator.