Intel Xeon E3-1280 vs Intel Xeon X5647

Table of Contents

Physical Specifications

Socket Intel Socket 1155 Intel Socket 1366
Foundry Intel Intel
Process size 32 nm 32 nm
Transistors 1,160 million 1,170 million
Die size 216 mm² 239 mm²
Package FC-LGA10 FC-LGA10

Performance

Frequency 3.5 GHz 2.933 GHz
Turbo clock up to 3.9 GHz up to 3.2 GHz
Base clock 100 MHz 133 MHz
Multiplier 35.0x 22.0x
Multiplier unlocked No No
TDP 95 W 130 W
Voltage 1.35 V

Architecture Details

Vertical Segment Server/Workstation Server/Workstation
Production status End-of-life End-of-life
Release date Apr 3rd, 2011 Feb 14th, 2011
Codename Sandy Bridge Westmere-EP
Generation Xeon E3 Xeon
Part SR00R SLBZ7
Memory support DDR3 Dual-channel DDR3 Triple-channel
ECC memory Yes Yes
PCI Express Gen 3, 16 Lanes(CPU only) Gen 2

Cores

Total Cores 4 4
Total Threads 8 8
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 8MB (shared) 12MB (shared)

Features & Technologies

5.86GT/s QPI Yes
AES-NI Yes Yes
AVX Yes
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
SSSE3 Yes Yes
TXT Yes Yes
VT-d Yes
VT-x Yes Yes
XD bit Yes
XD-Bit Yes

Compare

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