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Vol. 3 11-3
MEMORY CACHE CONTROL
L1 Data Cache • Pentium 4 and Intel Xeon processors (Based on Intel NetBurst
microarchitecture): 8-KByte, 4-way set associative, 64-byte cache line
size.
• Pentium 4 and Intel Xeon processors (Based on Intel NetBurst
microarchitecture): 16-KByte, 8-way set associative, 64-byte cache line
size.
• Intel Atom processors: 24-KByte, 6-way set associative, 64-byte cache
line size.
• Intel Core i7, Intel Core 2 Duo, Intel Core Duo, Intel Core Solo, Pentium M
and Intel Xeon processors: 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 and Intel Xeon processors: up to 4-MByte (or 4MBx2 in
quadcore processors), 16-way set associative, 64-byte cache line size.
• Intel Core 2 Duo and Intel Xeon processors: up to 6-MByte (or 6MBx2 in
quadcore processors), 24-way set associative, 64-byte cache line size.
• Intel Core i7 processor: 256KBbyte, 8-way set associative, 64-byte cache
line size.
• Intel Atom processors: 512-KByte, 8-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.
• Intel Core i7 processor: Up to 8MByte, 16-way set associative, 64-byte
cache line size.
Table 11-1. Characteristics of the Caches, TLBs, Store Buffer, and
Write Combining Buffer in Intel 64 and IA-32 Processors (Contd.)
Cache or Buffer Characteristics