Intel Core i7-990X vs Intel Xeon L5638

Table of Contents

Physical Specifications

Socket Intel Socket 1366 Intel Socket 1366
Foundry Intel Intel
Process size 32 nm 32 nm
Transistors 1,170 million 1,170 million
Die size 239 mm² 239 mm²
Package FC-LGA10 FC-LGA10

Performance

Frequency 3.466 GHz 2000 MHz
Turbo clock up to 3.733 GHz up to 2.4 GHz
Base clock 133 MHz 133 MHz
Multiplier 26.0x 15.0x
Multiplier unlocked Yes No
Voltage 1.375 V 1.35 V
TDP 130 W 60 W

Architecture Details

Vertical Segment Desktop Server/Workstation
Production status End-of-life End-of-life
Release date Feb 24th, 2011 Mar 16th, 2010
Codename Gulftown Westmere-EP
Generation Core i7 Xeon
Part SLBVZ SLBWY
Memory support DDR3 Triple-channel DDR3 Triple-channel
ECC memory No Yes
PCI Express Gen 2 Gen 2

Cores

Total Cores 6 6
Total Threads 12 12
SMP # CPUs 1 2
Integrated graphics

Cache

Cache L1 64K (per core) 64K (per core)
Cache L2 256K (per core) 256K (per core)
Cache L3 12MB (shared) 12MB (shared)

Notes

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

5.86GT/s QPI Yes
AES-NI Yes
EIST Yes
HTT Yes Yes
Intel 64 Yes Yes
MMX Yes Yes
SSE Yes Yes
SSE2 Yes Yes
SSE3 Yes Yes
SSE4.2 Yes Yes
SSSE3 Yes
TXT Yes
VT-x Yes
XD-Bit Yes

Compare

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