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  Intel Pentium 4 2.80 GHz 
  Aug 26, 2002, 12:00pm EDT 

Another Day, Another Pentium 4

By: Dan Mepham

Four new processors are being introduced by Intel today, two of which will use the new 533 MHz FSB, while the remaining two will continue to make use of the older 400 MHz bus. The new parts are as follows:

2.80 GHz, 533 MHz Bus
2.66 GHz, 533 MHz Bus
2.60 GHz, 400 MHz Bus
2.50 GHz, 400 MHz Bus

As was the case with the introduction of the 2.53 GHz part in May, Intel will leave the highest speed processor using the 400 MHz bus a notch below the highest speed processor on the 533 MHz bus. This is for obvious reasons, as Intel makes the transition to the new 533 MHz clock.

The latest Pentium 4 receives a small bump in core voltage, up to 1.525V from 1.500V. This may indicate that, at 2.80 GHz, Intel is nearing the limit of its 130nm process. We still expect the Pentium 4 to ramp to 3 GHz easily, however if the increasing voltage is any indication, we may not see more than 3.2 - 3.4 GHz before a process shrink to 90nm.

The increased voltage and clock speed lead to much higher levels of power dissipation - the latest Pentium 4 vents over 68 Watts, the highest yet for any Intel desktop processor. Despite the increased thermal dissipation, Intel will continue to ship the boxed processors with the same remarkably quiet heatsink.

Cache sizes remain at 8 KB, 12k uops, and 512 KB for the L1 Data, L1 Instruction, and L2 caches, respectively. All other features of the processor remain unchanged versus previous Northwood-based Pentium 4s. For that reason, we will not go into great detail regarding the architecture - for more information, see our previous articles describing the Pentium 4 architecture.

1. Introduction
2. Another Day, Another Pentium 4
3. Editorial Interlude
4. Test Disclosure
5. Stability Results
6. Performance Results
7. Summary

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