Difference between revisions of "CPU"
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| − | The CPU in the Xbox was a custom Pentium III running at 733MHz. The 'custom' part of this was | + | The CPU in the Xbox was a custom Pentium III running at 733MHz. The 'custom' part of this was that the Pentium III in the Xbox only had a 128KB L2 cache instead of the usual 256KB. This allowed Microsoft to buy them at a bit of a discount and Intel to shift a few more CPUs{{citation needed}}. |
== References == | == References == | ||
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* [http://www.intel.com/content/dam/support/us/en/documents/processors/mobile/celeron/sb/28365403.pdf Mobile Intel® Celeron® Processor (0.18μ) in BGA2 and Micro-PGA2 Packages] This datasheet is for the mobile version Coppermine with 256kB L2 cache. It does not contain the Xbox Coppermine-128 with 128kB L2 cache at 733MHz (S-Spec SL5SN). No such datasheet exists. Both differences are pin compatible. | * [http://www.intel.com/content/dam/support/us/en/documents/processors/mobile/celeron/sb/28365403.pdf Mobile Intel® Celeron® Processor (0.18μ) in BGA2 and Micro-PGA2 Packages] This datasheet is for the mobile version Coppermine with 256kB L2 cache. It does not contain the Xbox Coppermine-128 with 128kB L2 cache at 733MHz (S-Spec SL5SN). No such datasheet exists. Both differences are pin compatible. | ||
* [https://www.intel.com/content/dam/support/us/en/documents/processors/mobile/celeron/sb/24542154.pdf Mobile Intel® Celeron® Processor (0.18μ and 0.13μ) Specification Update] This document should contain the errata for the Xbox CPU. | * [https://www.intel.com/content/dam/support/us/en/documents/processors/mobile/celeron/sb/24542154.pdf Mobile Intel® Celeron® Processor (0.18μ and 0.13μ) Specification Update] This document should contain the errata for the Xbox CPU. | ||
| + | * [https://en.wikipedia.org/wiki/List_of_Intel_Pentium_III_microprocessors#"Coppermine"_(180_nm) Wikipedia - List of Intel Pentium III microprocessors: "Coppermine" (180 nm)] | ||
* [https://www.google.com/patents/US20050282621 CPU upgrading adapter for a Microsoft XboxTM game machine] US Patent Application 20050282621 by Friendtech, filed 2003-08-21. | * [https://www.google.com/patents/US20050282621 CPU upgrading adapter for a Microsoft XboxTM game machine] US Patent Application 20050282621 by Friendtech, filed 2003-08-21. | ||
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| + | Articles from the Intel Technology Journal about the Pentium III architecture: | ||
| + | * [https://web.archive.org/web/20000815203117/http://developer.intel.com/technology/itj/q21999.htm Intel Technology Journal Q2 1999] | ||
| + | * [https://web.archive.org/web/20001006215908/http://developer.intel.com/technology/itj/q21999/pdf/simd_ext.pdf The Internet Streaming SIMD Extensions] | ||
| + | * [https://web.archive.org/web/20031104144423/http://developer.intel.com/technology/itj/q21999/pdf/impliment.pdf Pentium III Processor Implementation Tradeoffs] | ||
| + | * [https://web.archive.org/web/20001006220034/http://developer.intel.com/technology/itj/q21999/pdf/serial_number.pdf Pentium III Processor Serial Number Feature and Applications] | ||
| + | * [https://web.archive.org/web/20001006220114/http://developer.intel.com/technology/itj/q21999/pdf/3d_stack.pdf Architecture of a 3D Software Stack for Peak Pentium III Processor Performance] | ||
| + | * [https://web.archive.org/web/20001006220154/http://developer.intel.com/technology/itj/q21999/pdf/apps_simd.pdf Applications Tuning for Streaming SIMD Extensions] | ||
| + | * [https://web.archive.org/web/20030331192409/http://developer.intel.com/technology/itj/Q21999/pdf/vtune.pdf Programming Methods for the Pentium® III Processor’s Streaming SIMD Extensions Using the VTune Performance Enhancement Environment] | ||
Latest revision as of 00:37, 2 January 2024
The CPU in the Xbox was a custom Pentium III running at 733MHz. The 'custom' part of this was that the Pentium III in the Xbox only had a 128KB L2 cache instead of the usual 256KB. This allowed Microsoft to buy them at a bit of a discount and Intel to shift a few more CPUs[citation needed].
References
- Mobile Intel® Celeron® Processor (0.18μ) in BGA2 and Micro-PGA2 Packages This datasheet is for the mobile version Coppermine with 256kB L2 cache. It does not contain the Xbox Coppermine-128 with 128kB L2 cache at 733MHz (S-Spec SL5SN). No such datasheet exists. Both differences are pin compatible.
- Mobile Intel® Celeron® Processor (0.18μ and 0.13μ) Specification Update This document should contain the errata for the Xbox CPU.
- Wikipedia - List of Intel Pentium III microprocessors: "Coppermine" (180 nm)
- CPU upgrading adapter for a Microsoft XboxTM game machine US Patent Application 20050282621 by Friendtech, filed 2003-08-21.
Articles from the Intel Technology Journal about the Pentium III architecture:
- Intel Technology Journal Q2 1999
- The Internet Streaming SIMD Extensions
- Pentium III Processor Implementation Tradeoffs
- Pentium III Processor Serial Number Feature and Applications
- Architecture of a 3D Software Stack for Peak Pentium III Processor Performance
- Applications Tuning for Streaming SIMD Extensions
- Programming Methods for the Pentium® III Processor’s Streaming SIMD Extensions Using the VTune Performance Enhancement Environment
