CPUBoss Review Our evaluation of E5-4655 v3 vs E5-2643 v3 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.6

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E5-2643 v3 

CPUBoss recommends the Intel Xeon E5-2643 v3  based on its value.

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VS

Differences What are the advantages of each

Front view of Intel Xeon E5-4655 v3

Reasons to consider the
Intel Xeon E5-4655 v3

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Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Better geekbench 3 Multi-Core score 19,858 vs 18,586 More than 5% better geekbench 3 Multi-Core score
Higher Maximum operating temperature 84.4 °C vs 77.3 °C Around 10% higher Maximum operating temperature
Newer Apr, 2015 vs Jul, 2014 Release date 9 months later
Front view of Intel Xeon E5-2643 v3

Reasons to consider the
Intel Xeon E5-2643 v3

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Much better geekbench 3 AES single core score 3,275,000 MB/s vs 3,620 MB/s Around 904.8x better geekbench 3 AES single core score
Higher clock speed 3.4 GHz vs 2.9 GHz More than 15% higher clock speed
Higher turbo clock speed 3.7 GHz vs 3.2 GHz More than 15% higher turbo clock speed
Much better performance per dollar 0.92 pt/$ vs 0.06 pt/$ More than 15x better performance per dollar
Much better performance per watt 10.54 pt/W vs 2.08 pt/W More than 5x better performance per watt

Benchmarks Real world tests of Xeon E5-4655 v3 vs E5-2643 v3

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-4655 v3
3,620 MB/s
Xeon E5-2643 v3
3,275,000 MB/s

Specifications Full list of technical specs

summary

Xeon E5-4655 v3  vs
E5-2643 v3 
Clock speed 2.9 GHz 3.4 GHz
Turbo clock speed 3.2 GHz 3.7 GHz
Cores Hexa core Hexa core

features

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

memory controller

Memory controller Built-in Built-in
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum memory size 786,432 MB 786,432 MB

details

Xeon E5-4655 v3  vs
E5-2643 v3 
Architecture x86-64 x86-64
Threads 12 12
Manufacture process 22 nm 22 nm
Max CPUs 4 2
Operating temperature Unknown - 84.4°C Unknown - 77.3°C

integrated graphics

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

power consumption

TDP 135W 135W
Annual home energy cost 32.52 $/year 32.52 $/year
Annual commercial energy cost 118.26 $/year 118.26 $/year
Performance per watt 2.08 pt/W 10.54 pt/W
Typical power consumption 109.69W 109.69W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 76,800 MB/s 76,800 MB/s
Transfer rate 9,600 MT/s 9,600 MT/s
Clock speed 4,800 MHz 4,800 MHz
Intel Xeon E5-4655 v3
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Intel Xeon E5-2643 v3
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