CPUBoss Review Our evaluation of E3-1275 vs 3770K 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

8.1

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 3770K 

CPUBoss recommends the Intel Core i7 3770K  based on its power consumption and value.

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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 lower typical power consumption 77.19W vs 114.97W Around 35% lower typical power consumption
Significantly better turbo clock speed 1,350 MHz vs 1,150 MHz More than 15% better turbo clock speed
Significantly higher GPU clock speed 850 MHz vs 650 MHz More than 30% higher GPU clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better CompuBench 1.5 ocean surface simulation score 222.92 fps vs 182.74 fps More than 20% better CompuBench 1.5 ocean surface simulation score
Much lower annual home energy cost 22.89 $/year vs 42.19 $/year More than 45% lower annual home energy cost
Slightly better geekbench 3 Multi-Core score 13,544 vs 13,098 Around 5% better geekbench 3 Multi-Core score
Higher Maximum operating temperature 72.6 °C vs 67.4 °C Around 10% higher Maximum operating temperature
Significantly lower annual commercial energy cost 83.22 $/year vs 112.39 $/year More than 25% lower annual commercial energy cost
Front view of Intel Core i7 3770K

Reasons to consider the
Intel Core i7 3770K

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Much better performance per dollar 2.21 pt/$ vs 0.69 pt/$ Around 3.2x better performance per dollar
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More number of displays supported 3 vs 2 1 more number of displays supported
Significantly better overclocked clock speed (Air) 4.69 GHz vs 3.88 GHz More than 20% better overclocked clock speed (Air)
Better performance per watt 4.55 pt/W vs 2.53 pt/W Around 80% better performance per watt
Significantly better overclocked clock speed (Water) 4.8 GHz vs 3.5 GHz More than 35% better overclocked clock speed (Water)
Newer Apr, 2012 vs Apr, 2011 Release date over 1 years later

Benchmarks Real world tests of Xeon E3-1275 vs Core i7 3770K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Xeon E3-1275
16.33 mHash/s
Core i7 3770K
10.47 mHash/s

CompuBench 1.5 (Face detection)

Xeon E3-1275
16.03 mPixels/s
Core i7 3770K
8.61 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Xeon E3-1275
1.17 fps
Core i7 3770K
1.67 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E3-1275
13,544
Core i7 3770K
13,098

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E3-1275
3,271.5

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E3-1275
2,370 MB/s
Core i7 3770K
2,620,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1275  vs
Core i7 3770K 
Clock speed 3.4 GHz 3.5 GHz
Turbo clock speed 3.8 GHz 3.9 GHz
Cores Quad core Quad core
Socket type
LGA 1155

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
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 77W
Annual home energy cost 22.89 $/year 42.19 $/year
Annual commercial energy cost 83.22 $/year 112.39 $/year
Performance per watt 2.53 pt/W 4.55 pt/W
Typical power consumption 77.19W 114.97W

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 3770K 
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 22 nm
Max CPUs 1 1
Clock multiplier 34 35
Operating temperature Unknown - 72.6°C Unknown - 67.4°C

overclocking

Overclock popularity 0 332
Overclocked clock speed 3.88 GHz 4.69 GHz
Overclocked clock speed (Water) 3.5 GHz 4.8 GHz
Overclocked clock speed (Air) 3.88 GHz 4.69 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics P3000 Intel® HD Graphics 4000
Number of displays supported 2 3
GPU clock speed 850 MHz 650 MHz
Turbo clock speed 1,350 MHz 1,150 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 21,333.32 MB/s 25,600 MB/s
Maximum memory size 32,768 MB 32,768 MB
Intel Xeon E3-1275
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Intel Core i7 3770K
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