| Below is a listing of the major improvements in CPU technology over a period of years. This incorporates the introduction of L1 and L2 cache. L1 being present on the CPU and L2 present on the mother board. |
| CPU | Cache size in the CPU |
| 80486DX and DX2 | 8 KB L1 |
| 80486DX4 | 16 KB L1 |
| Pentium | 16 KB L1 |
| Pentium Pro | 16 KB L1 + 256 KB L2
(some 512 KB L2) |
| Pentium MMX | 32 KB L1 |
| AMD K6 and K6-2 | 64 KB L1 |
| Pentium II and III | 32 KB L1 |
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| Pentium III Cumine | 32 KB L1 + 256 KB L2 |
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