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Front view of Intel Core i7 920

Intel Core i7 920

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Xeon X5270

Reasons to consider the
Intel Xeon X5270

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Much more l2 cache 6 MB vs 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher clock speed 3.5 GHz vs 2.66 GHz More than 30% higher clock speed
Much more l2 cache per core 3 MB/core vs 0.25 MB/core 12x more l2 cache per core
Much lower typical power consumption 65W vs 135.63W 2.1x lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 19.27 $/year vs 48.38 $/year 2.5x lower annual home energy cost
Much lower annual commercial energy cost 70.08 $/year vs 134.55 $/year Around 50% lower annual commercial energy cost
Better overclocked clock speed (Air) 4.67 GHz vs 4.22 GHz More than 10% better overclocked clock speed (Air)
Better PassMark (Single core) score 1,375 vs 1,164 Around 20% better PassMark (Single core) score
Better overclocked clock speed (Water) 4.93 GHz vs 4.24 GHz More than 15% better overclocked clock speed (Water)
Front view of Intel Core i7 920

Reasons to consider the
Intel Core i7 920

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Significantly better geekbench 3 Multi-Core score 7,014 vs 4,151 Around 70% better geekbench 3 Multi-Core score
Much better performance per dollar 0.61 pt/$ vs 0.09 pt/$ More than 6.5x better performance per dollar
More threads 8 vs 2 6 more threads
More cores 4 vs 2 Twice as many cores; run more applications at once
Higher Maximum operating temperature 67.9 °C vs 61 °C More than 10% higher Maximum operating temperature

Benchmarks Real world tests of Xeon X5270 vs Core i7 920

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5270
4,151
Core i7 920
7,014

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X5270
2,233
Core i7 920
1,959

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5270
179.2 MB/s
Core i7 920
143,700 MB/s

PassMark Data courtesy Passmark

Xeon X5270
2,524
Core i7 920
4,958

PassMark (Single Core)

Xeon X5270
1,375
Core i7 920
1,164

Specifications Full list of technical specs

summary

Xeon X5270  vs
Core i7 920 
Clock speed 3.5 GHz 2.66 GHz
Cores Dual core Quad core
Socket type
LGA 771
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 130W
Annual home energy cost 19.27 $/year 48.38 $/year
Annual commercial energy cost 70.08 $/year 134.55 $/year
Performance per watt 1.36 pt/W 1.21 pt/W
Typical power consumption 65W 135.63W

bus

Architecture FSB QPI
Number of links 1 1
Clock speed 1,333 MHz 2,400 MHz

details

Xeon X5270  vs
Core i7 920 
Architecture x86-64 x86-64
Threads 2 8
L2 cache 6 MB 1 MB
L2 cache per core 3 MB/core 0.25 MB/core
Manufacture process 45 nm 45 nm
Transistor count 410,000,000 731,000,000
Max CPUs 2 1
Clock multiplier 10 20
Voltage range 0.85 - 1.35V 0.8 - 1.38V
Operating temperature Unknown - 61°C Unknown - 67.9°C

overclocking

Overclocked clock speed 4.67 GHz 4.22 GHz
Overclocked clock speed (Water) 4.93 GHz 4.24 GHz
Overclocked clock speed (Air) 4.67 GHz 4.22 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
Intel Xeon X5270
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Intel Core i7 920
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