Intel Pentium Pro processor

Intel Pentium Pro was the first processor from the Intel Pentium II processor family. Targeted for the server and workstation market, the Pentium Pro included integrated 256KB, 512 KB or 1 MB L2 cache running at the processor speed. The L2 cache in the Pentium Pro was not located on the same die as the CPU core. The CPU was packaged in a "dual cavity" package, where one cavity contained the processor die and another contained the L2 cache. As all other members of the Pentium 2 family, the Pentium Pro was optimized to run 32-bit applications and, when running in 32-bit mode, it significantly outperformed Pentium and Pentium MMX CPUs at the same clock speed. At the same time Pentium Pro performance with 16-bit applications was poor, and often the processor was slightly slower than similarly clocked Pentium/Pentium MMX processors. Poor performance of the Pentium II core with 16-bit applications was fixed in the desktop Pentium II CPU.

The Pentium Pro processor was the only processor from the Pentium II family that didn't have MMX instructions.

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At a glance
L2 cache (KB):
256 - 1024
Frequency (MHz):
150 - 200
Intel Pentium Pro 256 KB - KB80521EX 256K

256 KB L2 cache
387-pin modified SPGA
Gold plated heat spreader
Image reduced 2x times

Engineering sample

Intel Pentium Pro 133 256 KB - KB80521EX-133 256K

133 MHz
256 KB L2 cache
387-pin modified SPGA
Gold plated heat spreader

Pre-production version
Image reduced 2x times

Intel Pentium Pro 150 256 KB - KB80521EX150 256K (BP80521150 256K)

150 MHz
256 KB L2 cache
387-pin modified SPGA
Gold plated heat spreader

Image reduced 2x times

Intel Pentium Pro 166 512 KB - KB80521EX166 512K (BP80521166 512K)

166 MHz
512 KB L2 cache
387-pin modified SPGA
Gold plated heat spreader

Image reduced 2x times

Intel Pentium Pro 180 256 KB - KB80521EX180 256K (BP80521180 256K)

180 MHz
256 KB L2 cache
387-pin modified SPGA
Gold plated heat spreader

Image reduced 2x times

Intel Pentium Pro 200 256 KB - KB80521EX200 256K (BP80521200 256K)

200 MHz
256 KB L2 cache
387-pin modified SPGA
Gold plated heat spreader

Image reduced 2x times

Intel Pentium Pro 200 512 KB - KB80521EX200 512K (BP80521200 512K)

200 MHz

512 KB L2 cache
387-pin modified SPGA
Gold plated heat spreader

Image reduced 2x times

Intel Pentium Pro 200 1 MB - GJ80521EX200 1M (BP80521200 1M)

200 MHz
256 KB L2 cache
387-pin modified plastic PGA

Pre-production version
Image reduced 2x times

Intel Pentium Pro processor

2008-11-14 22:18:08
Posted by: Neon_WA

pin arrangement on underside of a Pentium Pro

Intel Pentium Pro processor

 

2008-06-28 18:53:20
Posted by: Thomsonicus

can't find the Pentium II Overdrive, is it not on the site anywhere?

Response: No, it's not on site yet.
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