Compaq iPAQ 1.0, Technical Reference Manual

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Technical Reference Guide
Compaq iPAQ Series of Desktop Personal Computers
Second Edition - February 2001
3-3
3.2.2 PENTIUM III PROCESSOR
The Pentium III processor’s architecture (Figure 3-3) includes the same core functionality as
described previously for the Celeron processor but includes a larger L2 cache and higher
processing speeds.
Figure 3–3. Pentium III Processor Internal Architecture
These systems support the processor types listed in the following table.
Table 3–2. Pentium III Processor Statistical Comparison
Table 3-2.
Pentium III Processor Statistical Comparison
Processor
CPU/L1
Speed
L2
Size / Speed
FSB
Speed Notes
Pentium III 500E 500 MHz 256 KB @ 500 MHz 100 MHz [1]
Pentium III 533EB 533 MHz 256 KB @ 533 MHz 133 MHz
Pentium III 550E 550 MHz 256 KB @ 550 MHz 100 MHz
Pentium III 600E 600 MHz 256 KB @ 600 MHz 100 MHz
Pentium III 600EB 600 MHz 256 KB @ 600 MHz 133 MHz
Pentium III 667 667 MHz 256 KB @ 667 MHz 133 MHz
Pentium III 700 700 MHz 256 KB @ 700 MHz 100 MHz
Pentium III 733 733 MHz 256 KB @ 733 MHz 133 MHz [2]
Pentium III 866 866 MHz 256 KB @ 866 MHz 133 MHz [3]
NOTES:
[1] Standard processor on iPAQ 1.0 systems.
[2] Standard processor on iPAQ 1.2 systems.
[3] Standard processor on iPAQ 2.0 systems.
The Pentium III processor is software-compatible with Celeron, Pentium II, Pentium MMX,
Pentium, and x86 processors and also features 70 FPU-based streaming SIMD extensions (SSE)
that, when implemented by appropriate software, can enhance 3D transforming and speech
processing operations. Operating system requirements for SSE support are as follows:
Operating SystemLevel of SSE Support
Windows 95
No SSE support
Windows 98, OSR0 SSE support though ISV and OpenGL 6.1 applications only
Windows 98, OSR1 SSE support though ISV, OpenGL, and DirectX applications
Windows 2000 SSE support with ISV, OpenGL, and DirectX applications
Windows NT 4.0 SSE support requires driver and Service Pack 4 (SP5 recommended)
Full processing speed
Host bus speed
or
Pentium III Processor
CPU
FPU 32-KB
L1
Cache
256-KB
L2
Cache
FSB
I/F