Intel Xeon E7450 AD80582QH056003 Data Sheet

Intel® Xeon® Processor 7400 Series Datasheet

23

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.

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 

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.

 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.

.

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.

V

CC

Core voltage with respect to V

SS

-0.30

1.45

V

V

TT

FSB termination voltage with respect to 

V

SS

-0.30

1.45

V

T

CASE

Processor case temperature

See 

See 

°C

T

STORAGE

Storage temperature

-40

85

°C

3,  4,  5