Intel AT80604004878AA Manuel D’Utilisation
Features
148
Intel® Xeon® Processor 7500 Datasheet, Volume 1
7.2
Clock Control and Low Power States
The processor supports low power states at the individual thread, core, and package
level for optimal power management.
level for optimal power management.
7.2.1
Intel® Xeon® Processor 7500 Series C-State Power
Specifications
lists C-State power specifications for various Intel® Xeon® processor 7500
series SKUs.
7.3
Sideband Access to Processor Information ROM
via SMBus
7.3.1
Processor Information ROM
Table 7-1.
Processor C-State Power Specifications
Package
C-State
C-State
1
Notes:
1. Specifications are with all cores in the specified C-State.
Intel® Xeon®
Processor 7500
Series 130W
Intel® Xeon®
Processor 7500
Series 105W
2
2. Four core and six core SKUs
Intel® Xeon®
Processor 7500
Series 95W
3
3. All core combinations
C1E
62 W
56 W
48 W
C3
57 W
52 W
44 W
Offset/
Section
# of
Bits
Function
Notes
Examples
Header
00h
8
Data Format Revision
Two 4-bit hex digits
Start with 00h
01-02h
16
PIROM Size
Size in bytes (MSB first)
Use a decimal to hex transfer; 128
bytes = 0080h:
03h
8
Processor Data Address
Byte pointer, 00h if not present
0Eh
04h
8
Processor Core Data Address
Byte pointer, 00h if not present
1Bh
05h
8
Processor Uncore Data Address
Byte pointer, 00h if not present
2A
06h
8
Package Data Address
Byte pointer, 00h if not present
4Ch
07h
8
Part Number Data Address
Byte pointer, 00h if not present
54h
08h
8
Thermal Reference Data Address
Byte pointer, 00h if not present
66h
09h
8
Feature Data Address
Byte pointer, 00h if not present
6Ch
0Ah
8
Other Data Address
Byte pointer, 00h if not present
77h
0B-0Ch
16
Reserved
Reserved for future use
0000h
0Dh
8
Checksum
1 byte checksum
Add up by byte and take 2’s
complement
Processor Data
0E-13h
48
S-spec/QDF Number
Six 8-bit ASCII characters
14h
7/1
Sample/Production
First seven bits reserved
0b = Sample, 1b = Production
00000001 = production
00000001 = production
15
6
2
2
Number of Cores
Number of Threads
Number of Threads
[7:2] = Number of cores
[1:0] = Threads per core
[1:0] = Threads per core
00100010 = 8 cores with 2 threads
each
16-17h
16
System Bus Speed
Four 4-bit hex digits (Mhz)
0133h = 133MHz
1