CPUBoss Review Our evaluation of E3-1275 vs 2600 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

8

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E3-1275 

CPUBoss recommends the Intel Xeon E3-1275  based on its performance and single-core performance.

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VS

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 better CompuBench 1.5 ocean surface simulation score 222.92 fps vs 75.8 fps Around 3x better CompuBench 1.5 ocean surface simulation score
Much lower typical power consumption 77.19W vs 114.5W Around 35% lower typical power consumption
Better PassMark (Single core) score 2,191 vs 1,921 Around 15% better PassMark (Single core) score
Much lower annual home energy cost 22.89 $/year vs 41.87 $/year More than 45% lower annual home energy cost
Better PassMark score 9,863 vs 8,219 More than 20% better PassMark score
Significantly lower annual commercial energy cost 83.22 $/year vs 112.13 $/year More than 25% lower annual commercial energy cost
Newer Apr, 2011 vs Jan, 2011 Release date 3 months later
Front view of Intel Core i7 2600

Reasons to consider the
Intel Core i7 2600

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Much better performance per dollar 2.72 pt/$ vs 0.68 pt/$ Around 4x better performance per dollar
Significantly better performance per watt 6.48 pt/W vs 2.52 pt/W More than 2.5x better performance per watt
Better overclocked clock speed (Water) 3.77 GHz vs 3.5 GHz Around 10% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E3-1275 vs Core i7 2600

CompuBench 1.5 (Ocean surface simulation) Data courtesy CompuBench

Xeon E3-1275
222.92 fps
Core i7 2600
75.8 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E3-1275
13,544
Core i7 2600
10,986

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E3-1275
3,271.5
Core i7 2600
2,876

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E3-1275
2,370 MB/s
Core i7 2600
2,470,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E3-1275
12,963
Core i7 2600
11,071

GeekBench (64-bit) Data courtesy Primate Labs

Xeon E3-1275
14,039
Core i7 2600
11,820

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1275  vs
Core i7 2600 
Clock speed 3.4 GHz 3.4 GHz
Turbo clock speed 3.8 GHz 3.8 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 41.87 $/year
Annual commercial energy cost 83.22 $/year 112.13 $/year
Performance per watt 2.52 pt/W 6.48 pt/W
Typical power consumption 77.19W 114.5W

bus

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

details

Xeon E3-1275  vs
Core i7 2600 
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 32 nm 32 nm
Max CPUs 1 1
Clock multiplier 34 34
Operating temperature Unknown - 72.6°C Unknown - 72.6°C

overclocking

Overclocked clock speed 3.88 GHz 3.95 GHz
Overclocked clock speed (Water) 3.5 GHz 3.77 GHz
Overclocked clock speed (Air) 3.88 GHz 3.95 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics P3000 Intel® HD Graphics 2000
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 No
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 Core i7 2600
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