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Document Number: 318080-002 23

Electrical Specifications

2.9 Mixing Processors

Intel supports and validates multi-processor configurations only in which all processors

operate with the same FSB frequency, core frequency, number of cores, and have the

same internal cache sizes. Mixing components operating at different internal clock

frequencies or number of cores is not supported and will not be validated by Intel.

Note: Processors within a system must operate at the same frequency per bits [12:8] of the

CLOCK_FLEX_MAX MSR; however this does not apply to frequency transitions initiated

due to thermal events, Extended HALT, Enhanced Intel SpeedStep technology

transitions, or assertion of the FORCEPR# signal (See Section 6).

Mixing processors of different steppings but the same model (as per CPUID instruction)

is supported. Details regarding the CPUID instruction are provided in the AP-485 Intel

Processor Identification and the CPUID Instruction application note.

2.10 Absolute Maximum and Minimum Ratings

Table 2-8 specifies absolute maximum and minimum ratings only, which lie outside the

functional limits of the processor. Only within specified operation limits, can

functionality and long-term reliability be expected.

At conditions outside functional operation condition limits, but within absolute

maximum and minimum ratings, neither functionality nor long-term reliability can be

expected. If a device is returned to conditions within functional operation limits after

having been subjected to conditions outside these limits, but within the absolute

maximum and minimum ratings, the device may be functional, but with its lifetime

degraded depending on exposure to conditions exceeding the functional operation

condition limits.

At conditions exceeding absolute maximum and minimum ratings, neither functionality

nor long-term reliability can be expected. Moreover, if a device is subjected to these

conditions for any length of time then, when returned to conditions within the

functional operating condition limits, it will either not function or its reliability will be

severely degraded.

Although the processor contains protective circuitry to resist damage from static

electric discharge, precautions should always be taken to avoid high static voltages or

electric fields.

Notes:

1. For functional operation, all processor electrical, signal quality, mechanical and thermal specifications must

be satisfied.

2. Storage temperature is applicable to storage conditions only. In this scenario, the processor must not

receive a clock, and no pins can be connected to a voltage bias. Storage within these limits will not affect

the long-term reliability of the device. For functional operation, please refer to the processor case

temperature specifications.

3. This rating applies to the processor and does not include any tray or packaging.

4. Failure to adhere to this specification can affect the long-term reliability of the processor.

Table 2-8. Processor Absolute Maximum Ratings

Symbol Parameter Min Max Unit Notes

Core voltage with respect to V

-0.30 1.55 V

FSB termination voltage with respect to

-0.30 1.55 V

CASE

Processor case temperature See Section 6 See Section 6 ° C

STORAGE

Storage temperature -40 85 ° C 2, 3, 4

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 141 142

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