Intel Xeon E5-1660 v3 

Released July, 2014
  • 3 GHz
  • Octa core
5.5 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 E5-1660 v3 among all CPUs


Benchmark performance using all cores

Xeon E5-1660 v3
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Xeon E5-1660 v3
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Xeon E5-1660 v3
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Xeon E5-1660 v3
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Xeon E5-1660 v3
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


Are you paying a premium for performance?

Xeon E5-1660 v3
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


CPUBoss Score

Combination of all six facets

Xeon E5-1660 v3

Benchmarks Real world tests of the Intel Xeon E5-1660 v3

PassMark Data courtesy Passmark

Xeon E5-1660 v3
Core i7 5960X

PassMark (Single Core)

Xeon E5-1660 v3

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 GHz
Turbo clock speed 3.5 GHz
Cores Octa core


Has a NX bit Yes
Supports trusted computing Yes
Has virtualization support Yes
Instruction set extensions
  1. AES
  2. AVX
  3. AVX 2.0
Supports dynamic frequency scaling Yes

power consumption

TDP 140W
Annual home energy cost 33.73 $/year
Annual commercial energy cost 122.64 $/year
Performance per watt 3.05 pt/W
Typical power consumption 113.75W


Architecture QPI
Transfer rate 0 MT/s
Clock speed 0 MHz


Architecture x86-64
Threads 16 threads
L3 cache 20 MB
L3 cache per core 2.5 MB/core
Manufacture process 22 nm
Max CPUs 1
Operating temperature Unknown - 65.9°C


Overclocked clock speed 3 GHz
Overclocked clock speed (Water) 3 GHz
Overclocked clock speed (Air) 3 GHz

integrated graphics

GPU None

memory controller

Memory controller Built-in
Memory type DDR
Channels Quad Channel
Supports ECC Yes
Maximum bandwidth 6,400 MB/s
Maximum memory size 786,432 MB
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