CPUBoss Review Our evaluation of E5-4640 v2 vs E5-4620 v2 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

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of Intel Xeon E5-4640 v2

Reasons to consider the
Intel Xeon E5-4640 v2

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More threads 20 vs 16 4 more threads
Front view of Intel Xeon E5-4620 v2

Reasons to consider the
Intel Xeon E5-4620 v2

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Much higher clock speed 2.6 GHz vs 2.2 GHz Around 20% higher clock speed
Higher turbo clock speed 3 GHz vs 2.7 GHz More than 10% higher turbo clock speed
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core

Benchmarks Real world tests of Xeon E5-4640 v2 vs E5-4620 v2

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 E5-4640 v2
103.35 MB/s
Xeon E5-4620 v2
143,500 MB/s

Specifications Full list of technical specs

summary

Xeon E5-4640 v2  vs
E5-4620 v2 
Clock speed 2.2 GHz 2.6 GHz
Turbo clock speed 2.7 GHz 3 GHz
Cores Deca core Octa core

features

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

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 0.98 pt/W 4.06 pt/W
Typical power consumption 77.19W 77.19W

bus

Architecture QPI QPI
Number of links 2 2
Data rate 64,000 MB/s 57,600 MB/s
Transfer rate 8,000 MT/s 7,200 MT/s
Clock speed 4,000 MHz 3,600 MHz

details

Xeon E5-4640 v2  vs
E5-4620 v2 
Architecture x86-64 x86-64
Threads 20 16
L3 cache 20 MB 20 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 4 4
Voltage range 0.65 - 1.3V 0.65 - 1.3V
Operating temperature Unknown - 75°C Unknown - 75°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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Quad Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 59,733.32 MB/s 51,200 MB/s
Maximum memory size 786,432 MB 786,432 MB
Intel Xeon E5-4640 v2
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Intel Xeon E5-4620 v2
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