Intel 64 and IA-32 Architectures Software Developers Manual Volume 3A, System Programming Guide, Part 1

10-2 Vol. 3A
MEMORY CACHE CONTROL
Table 10-1. Characteristics of the Caches, TLBs, Store Buffer, and
Write Combining Buffer in Intel 64 and IA-32 Processors
Cache or Buffer Characteristics
Trace Cache
1
- Pentium 4 and Intel Xeon processors: 12 Kμops, 8-way set associative.
- Intel Core 2 Duo, Intel Core Duo, Intel Core Solo, Pentium M processor: not
implemented.
- P6 family and Pentium processors: not implemented.
L1 Instruction Cache
- Pentium 4 and Intel Xeon processors: not implemented.
- Intel Core 2 Duo, Intel Core Duo, Intel Core Solo, Pentium M processor:
32-KByte, 8-way set associative.
- P6 family and Pentium processors: 8- or 16-KByte, 4-way set associative,
32-byte cache line size; 2-way set associative for earlier Pentium processors.
L1 Data Cache
- Pentium 4 and Intel Xeon processors: 8-KByte, 4-way set associative, 64-byte
cache line size.
- Pentium 4 and Intel Xeon processors: 16-KByte, 8-way set associative, 64-byte
cache line size.
- Intel Core 2 Duo, Intel Core Duo, Intel Core Solo, Pentium M processor: 32-
KByte, 8-way set associative, 64-byte cache line size.
- P6 family processors: 16-KByte, 4-way set associative, 32-byte cache line size;
8-KBytes, 2-way set associative for earlier P6 family processors.
- Pentium processors: 16-KByte, 4-way set associative, 32-byte cache line size;
8-KByte, 2-way set associative for earlier Pentium processors.
L2 Unified Cache
- Intel Core 2 Duo processor: up to 4-MByte, 16-way set associative, 64-byte
cache line size.
- Intel Core Duo, Intel Core Solo processors: 2-MByte, 8-way set associative,
64-byte cache line size
- Pentium 4 and Intel Xeon processors: 256, 512, 1024, or 2048-KByte, 8-way set
associative, 64-byte cache line size, 128-byte sector size.
- Pentium M processor: 1 or 2-MByte, 8-way set associative, 64-byte cache line
size.
- P6 family processors: 128-KByte, 256-KByte, 512-KByte, 1-MByte, or 2-MByte,
4-way set associative, 32-byte cache line size.
- Pentium processor (external optional): System specific, typically 256- or
512-KByte, 4-way set associative, 32-byte cache line size.
L3 Unified Cache
- Intel Xeon processors: 512-KByte, 1-MByte, 2-MByte, or 4-MByte, 8-way set
associative, 64-byte cache line size, 128-byte sector size.
Instruction TLB
(4-KByte Pages)
- Pentium 4 and Intel Xeon processors: 128 entries, 4-way set associative.
- Intel Core 2 Duo, Intel Core Duo, Intel Core Solo processors, Pentium M
processor: 128 entries, 4-way set associative.
- P6 family processors: 32 entries, 4-way set associative.
- Pentium processor: 32 entries, 4-way set associative; fully set associative for
Pentium processors with MMX technology.
Data TLB (4-KByte
Pages)
- Intel Core 2 Duo processors: DTLB0, 16 entries, DTLB1, 256 entries, 4 ways.
- Pentium 4 and Intel Xeon processors: 64 entries, fully set associative; shared
with large page data TLBs.
- Intel Core Duo, Intel Core Solo processors, Pentium M processor: 128 entries,
4-way set associative.
- Pentium and P6 family processors: 64 entries, 4-way set associative; fully set.
associative for Pentium processors with MMX technology.