Intel Xeon E5-2643 

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

Clock speed has clearly been traded in for more cores in most of server SKUs.
by Johan-De-Gelas (Sep, 2014)
Take the following graph with a grain of salt as the benchmark is not the most accurate (results tend to vary by 5-8%), but still it gives a rough idea of what you can expect.
by Johan-De-Gelas (Sep, 2014)

CPUBoss Review Our evaluation of the Intel Xeon E5-2643 among all CPUs

Performance

Benchmark performance using all cores

Xeon E5-2643
6.1
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Xeon E5-2643
8.0
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Xeon E5-2643
0.0
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Xeon E5-2643
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Xeon E5-2643
5.0
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Xeon E5-2643
5.0
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.3

CPUBoss Score

Combination of all six facets

Xeon E5-2643
5.3

Benchmarks Real world tests of the Intel Xeon E5-2643

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-2643
12,252
Xeon E5-2620
10,510

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5-2643
2,764
Xeon E5-2620
1,736

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2643
2,195,000 MB/s
Xeon E5-2620
1,315,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5-2643
16,367
Xeon E5-2620
12,059

GeekBench

Xeon E5-2643
16,367
Xeon E5-2620
13,391

PassMark Data courtesy Passmark

Xeon E5-2643
8,474
Xeon E5-2620
8,730

PassMark (Single Core)

Xeon E5-2643
1,843
Xeon E5-2620
1,275

In The News From around the web

8
Sep

Intel Xeon E5 Version 3: Up to 18 Haswell EP Cores

by Johan De Gelas |
www.anandtech.com
However, it's not a case of the Haswell's L3 cache being a lot worse: the 20MB L3 cache of the Xeon E5-2667 v3 is only slightly slower than the Xeon E5-2690 and is still faster than the Xeon E5-2697 v2 (30MB).
Of course, those kind of bandwidth numbers only matter for specific HPC benchmarks as the L3 cache (30-45MB L3) will take care of most of the requests.
16
Dec

Intel Broadwell-EP Xeon E5 v4 Because Why Not?

by Scott Michaud |
www.pcper.com
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

summary

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

features

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
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 6.7 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
  5. DDR3-800
Channels Quad Channel
Supports ECC Yes
Maximum bandwidth 51,200 MB/s
Maximum memory size 393,216 MB

details

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 nm
Max CPUs 2
Clock multiplier 35
Voltage range 0.6 - 1.35V
Operating temperature Unknown - 73°C

overclocking

Overclocked clock speed 3.3 GHz
Overclocked clock speed (Water) 3.3 GHz
PassMark (Overclocked) 1,374.7
Overclocked clock speed (Air) 3.3 GHz

integrated graphics

GPU None

bus

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