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Differences What are the advantages of each

Front view of Intel Xeon E3-1245

Reasons to consider the
Intel Xeon E3-1245

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Much better performance per dollar 3.76 pt/$ vs 2.33 pt/$ More than 60% better performance per dollar
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
Significantly better performance per watt 10.8 pt/W vs 7.25 pt/W Around 50% better performance per watt
Higher Maximum operating temperature 72.6 °C vs 67.4 °C Around 10% higher Maximum operating temperature
Front view of Intel Core i7 3770

Reasons to consider the
Intel Core i7 3770

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Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Slightly higher turbo clock speed 3.9 GHz vs 3.7 GHz More than 5% higher turbo clock speed
More number of displays supported 3 vs 2 1 more number of displays supported
Lower typical power consumption 62.56W vs 77.19W Around 20% lower typical power consumption
Better PassMark (Single core) score 2,072 vs 1,869 More than 10% better PassMark (Single core) score
Better PassMark score 9,449 vs 8,045 More than 15% better PassMark score
Better overclocked clock speed (Air) 4.03 GHz vs 3.71 GHz Around 10% better overclocked clock speed (Air)
Newer Apr, 2012 vs Apr, 2011 Release date over 1 years later
Significantly better overclocked clock speed (Water) 4.32 GHz vs 3.3 GHz More than 30% better overclocked clock speed (Water)
Lower annual home energy cost 18.55 $/year vs 22.89 $/year Around 20% lower annual home energy cost
Lower annual commercial energy cost 67.45 $/year vs 83.22 $/year Around 20% lower annual commercial energy cost

Benchmarks Real world tests of Xeon E3-1245 vs Core i7 3770

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E3-1245
Core i7 3770

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E3-1245
2,410,000 MB/s
Core i7 3770
2,660,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E3-1245
Core i7 3770


Xeon E3-1245
Core i7 3770

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs


Xeon E3-1245  vs
Core i7 3770 
Clock speed 3.3 GHz 3.4 GHz
Turbo clock speed 3.7 GHz 3.9 GHz
Cores Quad core Quad core
Socket type
LGA 1155


Has a NX bit Yes Yes
Supports trusted computing Yes Yes
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 18.55 $/year
Annual commercial energy cost 83.22 $/year 67.45 $/year
Performance per watt 10.8 pt/W 7.25 pt/W
Typical power consumption 77.19W 62.56W


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


Xeon E3-1245  vs
Core i7 3770 
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 33 34
Operating temperature Unknown - 72.6°C Unknown - 67.4°C


Overclock popularity 1 8
Overclocked clock speed 3.71 GHz 4.03 GHz
Overclocked clock speed (Water) 3.3 GHz 4.32 GHz
Overclocked clock speed (Air) 3.71 GHz 4.03 GHz

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 E3-1245
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Intel Core i7 3770
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