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Enthusiasts love to know which “core” their processor is based on. “Core” is the silicon chip version used inside the CPU. Even in some ads you may find a reference to which core the CPU uses. To the regular user the core reference looks like Greek, so we decided to post a quick guide to all Athlon 64 cores released to date.
|Core||Socket||L2 Cache||Manufacturing Process||SSE3 Instructions||Note|
|ClawHammer||Socket 754 or 939||1 MB||130 nm||No|
|NewCastle||Socket 754 or 939||512 KB||130 nm||No|
|Winchester||Socket 939||512 KB||90 nm||No|
|Venice||Socket 939||512 KB||90 nm||Yes||Enhanced Memory Controller|
|San Diego||Socket 939||1 MB||90 nm||Yes||Enhanced Memory Controller|
SSE3 instructions were first launched with Pentium 4 processor and are MMX-like instructions, created to accelerate multimedia applications.
About the memory controller, what happens is that Athlon 64 processors have a limitation. When four DDR400/PC3200 memory modules are installed on the system, they are accessed at 333 MHz and not at 400 MHz. This was corrected on Venice and San Diego cores: on CPUs based on these cores the processor accesses the four memory modules at 400 MHz.