Intel Xeon E3-1276 v3 

Released April, 2014
  • 3.6 GHz
  • Quad core
8.1 Out of 10

Based on the Ivy Bridge architecture, they replaced the original Xeon E7s, developed from Sandy Bridge, that were released in April 2011.
by Scott-Michaud (Oct, 2014)
If you need eighteen cores per package, and can spare several thousand dollars per processor, you should be able to give someone your money in just a handful of months.
by Scott-Michaud (Oct, 2014)

CPUBoss Review Our evaluation of the Intel Xeon E3-1276 v3 among all CPUs


Benchmark performance using all cores

Xeon E3-1276 v3
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Xeon E3-1276 v3
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Xeon E3-1276 v3
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Xeon E3-1276 v3
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Xeon E3-1276 v3
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


Are you paying a premium for performance?

Xeon E3-1276 v3
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


CPUBoss Score

Combination of all six facets

Xeon E3-1276 v3

Benchmarks Real world tests of the Intel Xeon E3-1276 v3

CompuBench 1.5 (Face detection)

Xeon E3-1276 v3
18.04 mPixels/s
Core i7 4790
16.57 mPixels/s
Core i7 4790K
18.32 mPixels/s

PassMark Data courtesy Passmark

Xeon E3-1276 v3
Core i7 4790K
Core i7 4790

PassMark (Single Core)

Xeon E3-1276 v3
Core i7 4790

In The News From around the web


Eighteen-core Xeon E7 v3 Based on Haswell-EX in Q2'15

by Scott Michaud |
If that is not enough cores, then you can pick up an eight-socket motherboard and load it up with multiple of these.
While Ivy Bridge-EX was available with up to 15 physical cores per processor, double that with HyperThreading, Haswell-EX is increasing that to 18, or 36 simultaneous threads with HyperThreading.

Specifications Full list of technical specs


Clock speed 3.6 GHz
Turbo clock speed 4 GHz
Cores Quad core


Has a NX bit Yes
Supports trusted computing Yes
Has virtualization support Yes
Instruction set extensions
  1. MMX
  2. AES
  3. SSE
  4. SSE2
  5. SSE4.1
  6. SSE3
  7. Supplemental SSE3
  8. SSE4.2
  9. AVX 2.0
  10. AVX
  11. SSE4
Supports dynamic frequency scaling Yes

power consumption

Annual home energy cost 20.24 $/year
Annual commercial energy cost 73.58 $/year
Performance per watt 4.97 pt/W
Typical power consumption 68.25W


Architecture DMI 2.0
Transfer rate 5,000 MT/s


Architecture x86-64
Threads 8 threads
L3 cache 8 MB
L3 cache per core 2 MB/core
Manufacture process 22 nm
Max CPUs 1


Overclocked clock speed 3.6 GHz
Overclocked clock speed (Water) 3.6 GHz
Overclocked clock speed (Air) 3.6 GHz

integrated graphics

Label Intel® HD Graphics P4600
Number of displays supported 3
GPU clock speed 350 MHz
Turbo clock speed 1,250 MHz

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1600
  2. DDR3-1333
  3. DDR3
Channels Dual Channel
Supports ECC Yes
Maximum bandwidth 25,600 MB/s
Maximum memory size 32,768 MB
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