Saturday 25 May 2013

Why has the size of L1 cache not increased very much over the last 20 years?

Why has the size of L1 cache not increased very much over the last 20 years?

The Intel i486 has 8 KB of L1 cache. The Intel Nehalem has 32 KB L1 instruction cache and 32 KB L1 data cache per core.
The amount of L1 cache hasn't increased at nearly the rate the clockrate has increased.
Why not?

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