This page will show all objects that classify as AMD K6-III+. The K6-III+ has been made by Advanced Micro Devices, a multinational semiconductor that develops microprocessors, chipsets and graphic processors (ATi). AMD is the second largest microprocessor manufacturer after Intel and has active since 1969.
In 1982 AMD signed a contract with Intel to become a licensed second-source manufacturer. IBM wanted the Intel 8086/8088 but IBM's policy stated that at least two suppliers should be available. This is why the first AMD processors always have 'Intel' printed somewhere. After a while AMD didn't get the license to produce Intel processors anymore and thus AMD started cloning the 386 and launched the Am386. Since the AMD K5, AMD didn't clone the Intel processor but started developing on their own. The K5 wasn't a big success but thanks to NexGen that merged into AMD the K6 could be made. AMD could compete and has a range of processors today including six-core Opterons and a good performing quad-core for the desktop called the Phenom II X4.
AMD also acquired ATi to get in-house graphics chips. These are integrated in chipsets to create cheap motherboard solutions. In the future (The Future is Fusion as AMD calls it) the plans are to integrate the graphics chip into the processor.
AMD K6-III+ 400 '26727'
This AMD K6 processor has the best clock-for-clock performance of them all. It has 256KB L2 on-die full speed cache running at 400MHz and uses a 180nm manufacturing process. Unfortunately a big and fast L2 cache doesn't always mean 'high performance'. In this case the K6-III+ is quite a lot better compared to the normal K6-2 without L2 cache but compared to the K6-2+ (with 128KB L2 on-die full speed L2 cache) the differences are quite small. In general a K6-2+ 450MHz is just a tad faster than the K6-III+ 400MHz. It looks like the extra 128KB L2 cache isn't able to do much good on the K6 architecture 
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To compare manufacturing technology: both the first Athlon XP and Pentium 4 used the 180nm process as well but scaled up to 2100+ and 2GHz respectively.
The K6-III+ was released on 18 April 2000 and this model was produced in the 45th week of 2003! That's more than 3 years later and at that time the Pentium 4 was available at 3GHz. Why AMD build this processor so late is unknown to me.
Because the CPU runs at 1,6V (which the Gigabyte GA-5AX can supply) and only 400MHz it is surprisingly cool. I can run it with just a small heatsink and no fan at all. > Read more