Cache Memory - Advantech PCA-6175 Manual

1.12 Cache Memory

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Since the second level cache has been embedded into the Pentium II
CPU, you do not have to take care of either SRAM chips or SRAM
modules. The built-in second level cache in the Pentium II yields
much higher performance than the external cache memories. The
cache size in the Pentium II CPU is either 256 KB or 512 KB.
Normally, for workstation and server application, the 256 KB version
is enough. However, if your system is for heavy duty applications, the
512 KB version will help a lot. Specifically for our Pentium II based
SBC, the Pentium II has another version that provides much better
data security if combined with the DRAM ECC. Check with your
vendor for various Pentium II models.
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Chapter 1 Hardware Configuration