AMD Opteron 6276 vs Intel Xeon E5645

Table of Contents

Physical Specifications

Socket AMD Socket G34 Intel Socket 1366
Process size 32 nm 32 nm
Transistors 2,400 million 1,170 million
Die size 316 mm² 239 mm²
Package FC-LGA10
Foundry Intel

Performance

Frequency 2.3 GHz 2.4 GHz
Turbo clock up to 3.2 GHz up to 2.666 GHz
Base clock 200 MHz 133 MHz
Multiplier 11.5x 18.0x
Multiplier unlocked No No
TDP 115 W 80 W
Voltage 1.35 V

Architecture Details

Vertical Segment Server/Workstation Server/Workstation
Production status End-of-life End-of-life
Release date Nov 14th, 2011 Mar 16th, 2010
Codename Interlagos Westmere-EP
Generation Opteron Xeon
Part OS6276WKTGGGU SLBWZ
Memory support DDR3 DDR3 Triple-channel
ECC memory No Yes
PCI Express Gen 2 Gen 2

Cores

Total Cores 16 6
Total Threads 16 12
SMP # CPUs 4 2
Integrated graphics

Cache

Cache L1 768K 64K (per core)
Cache L2 16MB 256K (per core)
Cache L3 8MB (per die) 12MB (shared)

Notes

Notes 16KB L1 data cache per core. 64KB L1 instruction cache shared per two cores (per module). 2MB L2 cache shared per two cores (per module). 8MB L3 cache shared per eight cores (per die). 14MB total L3 cache available when using HT Assist.

Features & Technologies

5.86GT/s QPI Yes
AES Yes
AES-NI Yes
AMD-V Yes
AMD64 Yes
AVX Yes
CLMUL Yes
CVT16 Yes
EIST Yes
EVP Yes
FMA4 Yes
HTT Yes
Intel 64 Yes
MMX Yes Yes
SSE Yes Yes
SSE2 Yes Yes
SSE3 Yes Yes
SSE4.1 Yes
SSE4.2 Yes Yes
SSE4A Yes
SSSE3 Yes Yes
TXT Yes
VT-x Yes
XD-Bit Yes
XOP Yes

Compare

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