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The Unabridged Pentium 4 IA32 Processor Genealogy by Bob Colwell, Tom Shanley

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Hardware Characteristics

The Cartridge

Figure 29-1 on page 722 illustrates the Pentium® Xeon cartridge. It represented a different form factor than the Pentium® II Slot 1 cartridge. It was physically larger and had different pinouts—more power and ground pins (because the larger, faster L2 Cache drew more power than the Pentium® II's L2 Cache).

Figure 29-1. The Pentium® II Xeon Cartridge

FSB Protocol Alteration (GTL+ to AGTL+)

Due to the faster FSB (100MHz versus 66MHz), Intel® changed the GTL+ specification and referred to the modified specification as the AGTL+ specification (Assisted GTL +).

  • On a GTL+ FSB, a signal that had been driven low ...

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