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Intel Xeon E5440

Front view of Intel Xeon E5440
Front view of Intel Core2 Quad Q9550

Intel Core2 Quad Q9550

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Differences What are the advantages of each

Front view of Intel Xeon E5440

Reasons to consider the
Intel Xeon E5440

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Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Lower typical power consumption 65W vs 77.19W More than 15% lower typical power consumption
Better geekbench 3 Multi-Core score 6,294 vs 5,498 Around 15% better geekbench 3 Multi-Core score
Lower annual home energy cost 19.27 $/year vs 22.89 $/year More than 15% lower annual home energy cost
Lower annual commercial energy cost 70.08 $/year vs 83.22 $/year More than 15% lower annual commercial energy cost
Front view of Intel Core2 Quad Q9550

Reasons to consider the
Intel Core2 Quad Q9550

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly better performance per dollar 0.5 pt/$ vs 0.22 pt/$ More than 2.2x better performance per dollar
Better overclocked clock speed (Air) 3.99 GHz vs 3.61 GHz More than 10% better overclocked clock speed (Air)
Higher Maximum operating temperature 71.4 °C vs 67 °C More than 5% higher Maximum operating temperature

Benchmarks Real world tests of Xeon E5440 vs Core2 Quad Q9550

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5440
6,294
Core2 Quad Q9550
5,498

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5440
1,532
Core2 Quad Q9550
1,604

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5440
120,650 MB/s
Core2 Quad Q9550
121,500 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5440
5,178
Core2 Quad Q9550
5,132

GeekBench

Xeon E5440
5,178
Core2 Quad Q9550
7,065

PassMark Data courtesy Passmark

Xeon E5440
4,000
Core2 Quad Q9550
4,002

PassMark (Single Core)

Xeon E5440
1,208
Core2 Quad Q9550
1,199

Specifications Full list of technical specs

summary

 Xeon E5440  vs
Core2 Quad Q9550 
Clock speed 2.83 GHz 2.83 GHz
Cores Quad core Quad core
Socket type
LGA 771
LGA 775

features
Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
EM64T
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption
TDP 80W 95W
Annual home energy cost 19.27 $/year 22.89 $/year
Annual commercial energy cost 70.08 $/year 83.22 $/year
Performance per watt 2 pt/W 1.51 pt/W
Typical power consumption 65W 77.19W

bus
Architecture FSB FSB
Number of links 1 1
Clock speed 1,333 MHz 1,333 MHz

details

 Xeon E5440  vs
Core2 Quad Q9550 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 12 MB 12 MB
L2 cache per core 3 MB/core 3 MB/core
Manufacture process 45 nm 45 nm
Transistor count 820,000,000 820,000,000
Max CPUs 2 1
Clock multiplier 8 8
Voltage range 0.85 - 1.35V 0.85 - 1.36V
Operating temperature Unknown - 67°C Unknown - 71.4°C

overclocking
Overclocked clock speed 3.61 GHz 3.99 GHz
Overclocked clock speed (Water) 3.96 GHz 4.03 GHz
Overclocked clock speed (Air) 3.61 GHz 3.99 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 E5440
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Intel Core2 Quad Q9550
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Comments

Showing 2 comments.
Robert Carra (06:17 AM, May 31, 2017)
ep45 chipset i was able to run my q9550 at 4 ghz on air
rayven (04:33 AM, May 12, 2016)
E5440 @ 3700 mhz (air)
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