Intel Xeon E5-2643 

Released March, 2012
  • 3.3 GHz
  • Quad core
7.3 Out of 10

Sure, the AMD solution will be available over a year earlier and cost a fraction of the multi-thousand-dollar server processor, but it is somewhat ridiculous to think that a CPU has the theoretical performance available to software render the equivalent of Battlefield 4's medium settings without a GPU (if the software was written with said rendering engine, which it is not... of course).
by Scott-Michaud (Dec, 2013)
TDPs will be the same as Haswell-EP which range from 70W to 145W for server parts and from 70W to 160W for workstations.
by Scott-Michaud (Dec, 2013)

CPUBoss Review Our evaluation of the Intel Xeon E5-2643


Benchmark performance using all cores

Xeon E5-2643

Single-core Performance

Individual core benchmark performance

Xeon E5-2643
Passmark (Single Core)

Cost to Run

Xeon E5-2643
Commercial Energy Cost


Xeon E5-2643
Performance Per Dollar


CPUBoss Score

Performance, Single-core Performance, Cost to Run and Value

Xeon E5-2643

Benchmarks Real world tests of the Intel Xeon E5-2643


Xeon E5-2643
Core i7 4770K

Passmark (Single Core)

Xeon E5-2643
Xeon E5-2620

In The News From around the web


Intel Broadwell-EP Xeon E5 v4 Because Why Not?

by Scott Michaud |
They claim it will be Intel's first 14nm Xeon processor which obviously suggests that it will not be preceded by Broadwell in the lower performance server categories.
Intel will apparently allow Haswell and Broadwell to give off a little more heat than their predecessors.

Specifications Full list of technical specs


Clock speed 3.3 GHz
Turbo clock speed 3.5 GHz
Cores Quad core
Socket type LGA 2011
Is hyperthreaded Yes


Has a NX bit Yes
Supports trusted computing Yes
Has vitualization support Yes
  1. AES
  2. SSE4.1
  3. SSE3
  4. Supplemental SSE3
  5. SSE2
  6. MMX
  7. SSE
  8. SSE4.2
  9. AVX
Supports dynamic frequency scaling Yes

power consumption

TDP 130W
Annual home energy cost 31.32 $/year
Annual commercial energy cost 113.88 $/year
Performance per watt 10.82 pt/W
Typical power consumption 105.63W

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1600
  2. DDR3-1333
  3. DDR3-1066
  4. DDR3-800
Channels Quad Channel
Supports ECC Yes
Maximum bandwidth 51,200 MB/s
Maximum memory size 393,216 MB


Architecture x86-64
Threads 8 threads
L2 cache 1 MB
L2 cache per core 0.25 MB/core
L3 cache 10 MB
L3 cache per core 2.5 MB/core
Manufacture process 32 nms
Max CPUs 2
Clock multiplier 35
Voltage range 0.6 - 1.35V
Operating temperature Unknown - 73°C


GPU None
Label None
Latest DirectX None
Number of displays supported None
GPU clock speed None
Turbo clock speed None
3DMark06 None


Architecture QPI
Data rate 64,000 MB/s
Transfer rate 8,000 MT/s
Clock speed 4,000 MHz
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