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Differences What are the advantages of each

Front view of Intel Xeon E3-1275 v3

Reasons to consider the
Intel Xeon E3-1275 v3

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Significantly higher clock speed 3.5 GHz vs 2.3 GHz More than 50% higher clock speed
Much better performance per dollar 3.2 pt/$ vs 0.57 pt/$ Around 5.8x better performance per dollar
Higher turbo clock speed 3.9 GHz vs 3.3 GHz Around 20% higher turbo clock speed
Much better turbo clock speed 1,250 MHz vs 1,000 MHz 25% better turbo clock speed
Much better performance per watt 13.73 pt/W vs 4.75 pt/W Around 3x better performance per watt
Much better overclocked clock speed (Air) 3.88 GHz vs 2.3 GHz Around 70% better overclocked clock speed (Air)
Better PassMark score 9,863 vs 7,850 More than 25% better PassMark score
Better PassMark (Single core) score 2,191 vs 1,949 More than 10% better PassMark (Single core) score
Significantly better overclocked clock speed (Water) 3.5 GHz vs 2.3 GHz More than 50% better overclocked clock speed (Water)
Front view of Intel Xeon E3-1268L v3

Reasons to consider the
Intel Xeon E3-1268L v3

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Much lower typical power consumption 36.56W vs 68.25W More than 45% lower typical power consumption
Much lower annual home energy cost 10.84 $/year vs 20.24 $/year More than 45% lower annual home energy cost
Much lower annual commercial energy cost 39.42 $/year vs 73.58 $/year More than 45% lower annual commercial energy cost

Benchmarks Real world tests of Xeon E3-1275 v3 vs E3-1268L 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 E3-1275 v3
4,185,000 MB/s
Xeon E3-1268L v3
3,875 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1275 v3  vs
E3-1268L v3 
Clock speed 3.5 GHz 2.3 GHz
Turbo clock speed 3.9 GHz 3.3 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
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 84W 45W
Annual home energy cost 20.24 $/year 10.84 $/year
Annual commercial energy cost 73.58 $/year 39.42 $/year
Performance per watt 13.73 pt/W 4.75 pt/W
Typical power consumption 68.25W 36.56W

bus

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

details

Xeon E3-1275 v3  vs
E3-1268L v3 
Architecture x86-64 x86-64
Threads 8 8
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 3.88 GHz 2.3 GHz
Overclocked clock speed (Water) 3.5 GHz 2.3 GHz
Overclocked clock speed (Air) 3.88 GHz 2.3 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics P4600 Intel® HD Graphics 4600
Number of displays supported 3 3
GPU clock speed 350 MHz 350 MHz
Turbo clock speed 1,250 MHz 1,000 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
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 32,768 MB
Intel Xeon E3-1275 v3
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Intel Xeon E3-1268L v3
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