Intel Pentium 4 (65 nm)

Configuration

Pentium 4 631 (65 nm, 3 GHz, 2 MB L2) + G45 + DDR2-800 6-6-6-18-2T

Cache

L1 Data cache = 16 KB. 64 B/line.

L2 cache size = 2 MB. 64 B/line, 2 Lines/Sector

4 KB pages mode (Windows 7 x64)

TLB size = 64 items.

Size Latency Description
16 K 4 TLB + L1
256 K 27 +23 (L2)
2 M 60 +33 (TLB miss)
... 60 + 122 ns + RAM

2 MB pages mode (Windows 7 x64)

TLB size = 64 items.

Size Latency Description
16 K 4 TLB + L1
2 M 27 +23 (L2)
128 M 27 + 122 ns + RAM
... 87 + 122 ns +60 (TLB miss)

MISC

64-bytes range cross penalty = 41 cycles.

4096-bytes range cross penalty = 95 cycles.

L2 B/W (Read with 64 Bytes stride) = 5.63 cycles per cache line

L2 B/W (Parallel Random Read) = 4.30 cycles per cache line

Branch misprediction penalty = 34-36 cycles.