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Differences What are the advantages of each

Front view of Intel Xeon E3-1225

Reasons to consider the
Intel Xeon E3-1225

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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
Much lower annual home energy cost 22.89 $/year vs 42.19 $/year More than 45% lower annual home energy cost
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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Higher turbo clock speed 3.9 GHz vs 3.4 GHz Around 15% higher turbo clock speed
Higher clock speed 3.5 GHz vs 3.1 GHz Around 15% higher clock speed
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better performance per dollar 2.21 pt/$ vs 1.01 pt/$ Around 2.2x better performance per dollar
More number of displays supported 3 vs 2 1 more number of displays supported
Slightly 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
Better PassMark score 9,544 vs 5,954 More than 60% better PassMark score
More threads 8 vs 4 Twice as many threads
Better PassMark (Single core) score 2,084 vs 1,747 Around 20% better PassMark (Single core) score
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better performance per watt 4.55 pt/W vs 2.31 pt/W More than 95% better performance per watt
Newer Apr, 2012 vs Apr, 2011 Release date over 1 years later

Benchmarks Real world tests of Xeon E3-1225 vs Core i7 3770K

GeekBench (32-bit) Data courtesy Primate Labs


PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs


Xeon E3-1225  vs
Core i7 3770K 
Clock speed 3.1 GHz 3.5 GHz
Turbo clock speed 3.4 GHz 3.9 GHz
Cores Quad core Quad core
Socket type
LGA 1155


Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
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 2.31 pt/W 4.55 pt/W
Typical power consumption 77.19W 114.97W


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


Xeon E3-1225  vs
Core i7 3770K 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 6 MB 8 MB
L3 cache per core 1.5 MB/core 2 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 1 1
Clock multiplier 31 35
Operating temperature Unknown - 72.6°C Unknown - 67.4°C


Overclock popularity 0 332

integrated graphics

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
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 E3-1225
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Intel Core i7 3770K
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