CPUBoss Review Our evaluation of E3-1276 v3 vs E3-1225 v5 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 E3-1276 v3

Reasons to consider the
Intel Xeon E3-1276 v3

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Higher clock speed 3.6 GHz vs 3.3 GHz Around 10% higher clock speed
Higher turbo clock speed 4 GHz vs 3.7 GHz Around 10% higher turbo clock speed
Better turbo clock speed 1,250 MHz vs 1,150 MHz Around 10% better turbo clock speed
More threads 8 vs 4 Twice as many threads
Better PassMark score 10,244 vs 7,758 More than 30% better PassMark score
Better PassMark (Single core) score 2,289 vs 1,994 Around 15% better PassMark (Single core) score
Front view of Intel Xeon E3-1225 v5

Reasons to consider the
Intel Xeon E3-1225 v5

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Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better performance per dollar 1.09 pt/$ vs 0.83 pt/$ More than 30% better performance per dollar
Better overclocked clock speed (Air) 4.39 GHz vs 3.6 GHz More than 20% better overclocked clock speed (Air)
Higher GPU clock speed 400 MHz vs 350 MHz Around 15% higher GPU clock speed
Newer Oct, 2015 vs Apr, 2014 Release date over 1 years later

Benchmarks Real world tests of Xeon E3-1276 v3 vs E3-1225 v5

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 E3-1276 v3
5,310 MB/s
Xeon E3-1225 v5
4,920 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1276 v3  vs
E3-1225 v5 
Clock speed 3.6 GHz 3.3 GHz
Turbo clock speed 4 GHz 3.7 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 84W 80W
Annual home energy cost 20.24 $/year 19.27 $/year
Annual commercial energy cost 73.58 $/year 70.08 $/year
Performance per watt 3.4 pt/W 3.05 pt/W
Typical power consumption 68.25W 65W

bus

Architecture DMI 2.0 FSB
Number of links 0 1
Transfer rate 5,000 MT/s 8,000 MT/s

details

Xeon E3-1276 v3  vs
E3-1225 v5 
Architecture x86-64 x86-64
Threads 8 4
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nm 14 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.6 GHz 4.39 GHz
Overclocked clock speed (Water) 3.6 GHz 3.7 GHz
Overclocked clock speed (Air) 3.6 GHz 4.39 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics P4600 Intel® HD Graphics P530
Number of displays supported 3 3
GPU clock speed 350 MHz 400 MHz
Turbo clock speed 1,250 MHz 1,150 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 65,536 MB
Intel Xeon E3-1276 v3
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Intel Xeon E3-1225 v5
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