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The Intel Pentium III Xeon Processor
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The Pentium III Xeon was introduced in March 1999.
Early versions (Code named Tanner) where built in .25 micron technology and featured a 100MHz front side bus, 512KB to 2MB L2 off-die cache sizes and multiprocessor
support for up to 8 CPUs. In October 1999 Intel introduced the 2nd
generation PIII Xeon Cascades, using the same core as the .18 micron Pentium III Coppermine processor. As a result the Cascades has its 256KB on-die L2 cache
running at full clock speed and all the other Coppermine features like Advanced Transfer Cache, Advanced System Buffering, support for 133 MHz front speed bus,
SSE (Streaming SIMD Extensions), etc.
However, the introduction of Cascades had some severe drawbacks: The small 256KB L2 cache took back the Xeon's
performance advance over the standard Pentium III and the 133MHz bus protocol did not support more than 2 CPUs in a system. In May 2000 Intel finally
released a "large cache" version with up to 2MB (on-die) L2 cache and 100MHz front side bus, again supporting multiprocessing with up to 8 CPUs.
References:
Intel Technical Documents
Pictures and Info at geek.com
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Intel Pentium III Xeon 80525KY500512, Engineering Sample |
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Pentium III Xeon
Intel Confidential Q882ES
48429874-0150 A4
i(m)(c)'97 80525KY500512 |
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| Core Frequency: | 500 MHz | | Board Frequency: | 100 MHz |
| Clock Multiplier: | 5.0 | | Data bus (ext.): | 64 Bit | | Address bus: | 36 Bit | | Transistors: | 9,500,000 | | Circuit Size: | 0.25 µ | | Voltage: | 2.0 V | | Introduced: | March 17, 1999 | | Manufactured: | week 42/1998 | | L1 Cache: | 16+16 KB | | L2 Cache: | 512 KB | | CPU Code: | Tanner | | Intel S-Spec: |
Q882ES |
| Package Type: | Plastic
SECC |
| Socket: |
Slot 2 |
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Intel Pentium III Xeon 550/100/512 |
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Pentium III Xeon
550/100/512 S2
Y0080081-0027 IRELAND
i(m)(c)'98 SL3AJ |
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| Core Frequency: | 550 MHz | | Board Frequency: | 100 MHz |
| Clock Multiplier: | 5.5 | | Data bus (ext.): | 64 Bit | | Address bus: | 36 Bit | | Transistors: | 9,500,000 | | Circuit Size: | 0.25 µ | | Voltage: | 2.0 V | | Introduced: | August 23, 1999 | | Manufactured: | week 08/2000 | | Made in: | Ireland | | L1 Cache: | 16+16 KB | | L2 Cache: | 512 KB | | CPU Code: | Tanner | | Intel S-Spec: |
SL3AJ |
| Package Type: | Plastic
SECC |
| Socket: |
Slot 2 |
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Intel Pentium III Xeon 80525KY5001M, Engineering Sample |
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Pentium III Xeon
Intel Confidential Q880ES
48519316-0037 A4
i(m)(c)'97 80525KY5001M |
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| Core Frequency: | 500 MHz | | Board Frequency: | 100 MHz |
| Clock Multiplier: | 5.0 | | Data bus (ext.): | 64 Bit | | Address bus: | 36 Bit | | Transistors: | 9,500,000 | | Circuit Size: | 0.25 µ | | Voltage: | 2.0 V | | Introduced: | March 17, 1999 | | Manufactured: | week 51/1998 | | L1 Cache: | 16+16 KB | | L2 Cache: | 1 MB | | CPU Code: | Tanner | | Intel S-Spec: |
Q880ES |
| Package Type: | Plastic
SECC |
| Socket: |
Slot 2 |
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Intel Pentium III Xeon 600/133/256 |
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Pentium III Xeon
600/133/256 S2 5/12V
Y9490141-0113 IRELAND
i(m)(c)'98 SL3SS |
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| Core Frequency: | 600 MHz | | Board Frequency: | 133 MHz |
| Clock Multiplier: | 4.5 | | Data bus (ext.): | 64 Bit | | Address bus: | 36 Bit | | Transistors: | 28,000,000 | | Circuit Size: | 0.18 µ | | Voltage: | 5.0, 12.0 V | | Introduced: | October 25, 1999 | | Manufactured: | week 49/1999 | | Made in: | Ireland | | L1 Cache: | 16+16 KB | | L2 Cache: | 256 KB | | CPU Code: | Cascades | | Intel S-Spec: |
SL3SS |
| Package Type: | Plastic
SECC |
| Socket: |
Slot 2 |
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Intel Pentium III Xeon 667/133/256 |
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Pentium III Xeon
667/133/256 S2 5/12V
Y9430105-0002 IRELAND
i(m)(c)'98 SL3ST |  |
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| Core Frequency: | 667 MHz | | Board Frequency: | 133 MHz |
| Clock Multiplier: | 5.0 | | Data bus (ext.): | 64 Bit | | Address bus: | 36 Bit | | Transistors: | 28,000,000 | | Circuit Size: | 0.18 µ | | Voltage: | 5.0, 12.0 V | | Introduced: | October 25, 1999 | | Manufactured: | week 43/1999 | | Made in: | Ireland | | L1 Cache: | 16+16 KB | | L2 Cache: | 256 KB | | CPU Code: | Cascades | | Intel S-Spec: |
SL3ST |
| Package Type: | Plastic
SECC |
| Socket: |
Slot 2 |
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Intel Pentium III Xeon 80526KZ800256, Engineering Sample |
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Pentium III Xeon
Intel Confidential QJ312ES
90058007-0070 MALAY
i(m)(c)'98 80526KZ800256 |
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| Core Frequency: | 800 MHz | | Board Frequency: | 133 MHz |
| Clock Multiplier: | 6.0 | | Data bus (ext.): | 64 Bit | | Address bus: | 36 Bit | | Transistors: | 28,000,000 | | Circuit Size: | 0.25 µ | | Voltage: | 2.8, 5, 12 V | | Introduced: | January 12, 2000 | | Manufactured: | week 05/2000 | | Made in: | Malaysia | | L1 Cache: | 16+16 KB | | L2 Cache: | 256 KB | | CPU Code: | Cascades | | Intel S-Spec: |
QJ312ES |
| Package Type: | Plastic
SECC |
| Socket: |
Slot 2 |
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Early versions (Code named Tanner) where built in .25 micron technology and featured a 100MHz front side bus, 512KB to 2MB L2 off-die cache sizes and multiprocessor support for up to 8 CPUs.