Intel Core i7-975 vs Intel Xeon W3565

Physical Specifications

Socket Intel Socket 1366 Intel Socket 1366
Foundry Intel Intel
Process size 45 nm 45 nm
Transistors 731 million 731 million
Die size 263 mm² 263 mm²
Package FC-LGA8 FC-LGA8


Frequency 3.333 GHz 3.2 GHz
Turbo clock up to 3.6 GHz up to 3.466 GHz
Base clock 133 MHz 133 MHz
Multiplier 25.0x 24.0x
Multiplier unlocked Yes No
Voltage 1.375 V 1.375 V
TDP 130 W 130 W

Architecture Details

Vertical Segment Desktop Server/Workstation
Production status End-of-life End-of-life
Release date Jun 2nd, 2009 Nov 1st, 2009
Codename Bloomfield Bloomfield
Generation Core i7 Xeon
Memory support DDR3 Triple-channel DDR3 Triple-channel
ECC memory No Yes
PCI Express Gen 2 Gen 2


Total Cores 4 4
Total Threads 8 8
SMP # CPUs 1 1
Integrated graphics


Cache L1 64K (per core) 64K (per core)
Cache L2 256K (per core) 256K (per core)
Cache L3 8MB (shared) 8MB (shared)


Notes This processor comes with an unlocked FSB multiplier, allowing users to set the multiplier value higher than shipped value, to facilitate better overclocking. It is branded under the Extreme Edition label.

Features & Technologies

EIST Yes Yes
HTT Yes Yes
Intel 64 Yes Yes
MMX Yes Yes
SSE Yes Yes
SSE2 Yes Yes
SSE3 Yes Yes
SSE4.2 Yes Yes
TXT Yes Yes
VT-x Yes Yes
XD-Bit Yes Yes


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