CPUBoss Review Our evaluation of E3-1231 v3 vs 3940XM 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

7.8

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E3-1231 v3 

CPUBoss recommends the Intel Xeon E3-1231 v3  based on its single-core performance and value.

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VS

Differences What are the advantages of each

Front view of Intel Xeon E3-1231 v3

Reasons to consider the
Intel Xeon E3-1231 v3

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Much better performance per dollar 6.2 pt/$ vs 1.6 pt/$ Around 4x better performance per dollar
Higher clock speed 3.4 GHz vs 3 GHz Around 15% higher clock speed
Better performance per watt 18.61 pt/W vs 14.4 pt/W Around 30% better performance per watt
Newer Apr, 2014 vs Sep, 2012 Release date over 1 years later
Better overclocked clock speed (Water) 3.81 GHz vs 3 GHz More than 25% better overclocked clock speed (Water)
Front view of Intel Core i7 3940XM

Reasons to consider the
Intel Core i7 3940XM

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Lower typical power consumption 44.69W vs 65W More than 30% lower typical power consumption
Slightly better 3DMark06 CPU score 67.9 vs 63.9 More than 5% better 3DMark06 CPU score
Better overclocked clock speed (Air) 4.46 GHz vs 3.76 GHz Around 20% better overclocked clock speed (Air)
Lower annual commercial energy cost 48.18 $/year vs 70.08 $/year More than 30% lower annual commercial energy cost
Lower annual home energy cost 13.25 $/year vs 19.27 $/year More than 30% lower annual home energy cost

Benchmarks Real world tests of Xeon E3-1231 v3 vs Core i7 3940XM

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 E3-1231 v3
4,175,000 MB/s
Core i7 3940XM
2,680,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1231 v3  vs
Core i7 3940XM 
Clock speed 3.4 GHz 3 GHz
Turbo clock speed 3.8 GHz 3.9 GHz
Cores Quad core Quad core

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 55W
Annual home energy cost 19.27 $/year 13.25 $/year
Annual commercial energy cost 70.08 $/year 48.18 $/year
Performance per watt 18.61 pt/W 14.4 pt/W
Typical power consumption 65W 44.69W

bus

Architecture DMI 2.0 DMI
Number of links 0 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Xeon E3-1231 v3  vs
Core i7 3940XM 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.76 GHz 4.46 GHz
Overclocked clock speed (Water) 3.81 GHz 3 GHz
Overclocked clock speed (Air) 3.76 GHz 4.46 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 4000
Number of displays supported N/A 3
GPU clock speed N/A 650 MHz
Turbo clock speed N/A 1,350 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 25,600 MB/s 12,800 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Xeon E3-1231 v3
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Intel Core i7 3940XM
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