CPUBoss Review Our evaluation of E5540 vs 920 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

No winner declared

Too close to call

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VS
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 E5540

Reasons to consider the
Intel Xeon E5540

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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
Better geekbench 3 Multi-Core score 8,617 vs 7,014 Around 25% better geekbench 3 Multi-Core score
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
Higher Maximum operating temperature 76 °C vs 67.9 °C More than 10% higher Maximum operating temperature
Better performance per watt 2.24 pt/W vs 1.21 pt/W More than 85% better performance per watt
Newer Mar, 2009 vs Oct, 2008 Release date 6 months later
Better overclocked clock speed (Water) 4.45 GHz vs 4.24 GHz More than 5% 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 performance per dollar 0.61 pt/$ vs 0.23 pt/$ Around 2.8x better performance per dollar
Better overclocked clock speed (Air) 4.22 GHz vs 3.57 GHz Around 20% better overclocked clock speed (Air)
Better geekbench 3 single core score 1,959 vs 1,679 More than 15% better geekbench 3 single core score

Benchmarks Real world tests of Xeon E5540 vs Core i7 920

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5540
8,617
Core i7 920
7,014

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5540
1,679
Core i7 920
1,959

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5540
112,700 MB/s
Core i7 920
143,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5540
7,362
Core i7 920
7,125

GeekBench

Xeon E5540
8,085
Core i7 920
9,242

PassMark Data courtesy Passmark

Xeon E5540
4,857
Core i7 920
4,958

PassMark (Single Core)

Xeon E5540
1,141
Core i7 920
1,164

Specifications Full list of technical specs

summary

Xeon E5540  vs
Core i7 920 
Clock speed 2.53 GHz 2.66 GHz
Turbo clock speed 2.8 GHz 2.93 GHz
Cores Quad core Quad core
Socket type
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

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

bus

Architecture QPI QPI
Number of links 2 1
Data rate 46,928 MB/s 19,200 MB/s
Transfer rate 5,860 MT/s 4,800 MT/s
Clock speed 2,930 MHz 2,400 MHz

details

Xeon E5540  vs
Core i7 920 
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 45 nm 45 nm
Transistor count 731,000,000 731,000,000
Max CPUs 2 1
Clock multiplier 19 20
Voltage range 0.75 - 1.35V 0.8 - 1.38V
Operating temperature Unknown - 76°C Unknown - 67.9°C

overclocking

Overclock popularity 0 491
Overclocked clock speed 3.57 GHz 4.22 GHz
Overclocked clock speed (Water) 4.45 GHz 4.24 GHz
Overclocked clock speed (Air) 3.57 GHz 4.22 GHz

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 2.24 pt/W 1.21 pt/W
Typical power consumption 65W 135.63W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Triple Channel
Supports ECC Yes No
Maximum bandwidth 25,599.99 MB/s 25,599.99 MB/s
Intel Xeon E5540
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Intel Core i7 920
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