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Differences What are the advantages of each

Front view of Intel Xeon E3-1275

Reasons to consider the
Intel Xeon E3-1275

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Much higher clock speed 3.4 GHz vs 3.1 GHz Around 10% higher clock speed
Much better PassMark score 9,863 vs 5,954 More than 65% better PassMark score
Significantly higher turbo clock speed 3.8 GHz vs 3.4 GHz More than 10% higher turbo clock speed
More l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 8 vs 4 Twice as many threads
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Front view of Intel Xeon E3-1225

Reasons to consider the
Intel Xeon E3-1225

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CPUBoss is not aware of any important advantages of the E3-1225 vs the E3-1275.

Benchmarks Real world tests of Xeon E3-1275 vs E3-1225

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E3-1275
12,963
Xeon E3-1225
9,386

GeekBench

Xeon E3-1275
14,039
Xeon E3-1225
9,386

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1275  vs
E3-1225 
Clock speed 3.4 GHz 3.1 GHz
Turbo clock speed 3.8 GHz 3.4 GHz
Cores Quad core Quad core
Socket type
LGA 1155

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
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 2.53 pt/W 2.31 pt/W
Typical power consumption 77.19W 77.19W

bus

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

details

Xeon E3-1275  vs
E3-1225 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1
Clock multiplier 34 31
Operating temperature Unknown - 72.6°C Unknown - 72.6°C

overclocking

Overclock popularity 0 0

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics P3000 Intel® HD Graphics P3000
Number of displays supported 2 2
GPU clock speed 850 MHz 850 MHz
Turbo clock speed 1,350 MHz 1,350 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 21,333.32 MB/s 21,333.32 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Xeon E3-1275
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Intel Xeon E3-1225
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