CPUBoss Review Our evaluation of E5405 vs E8400

Performance

Benchmark performance using all cores

Passmark and GeekBench

Single-core Performance

Individual core benchmark performance

Passmark (Single Core)

Power Consumption

How much power does the processor require?

TDP

Value

Performance Per Dollar

CPUBoss Score

Performance, Single-core Performance, Power Consumption and Value

Winner
Intel Core2 Duo E8400 

CPUBoss recommends the Intel Core2 Duo E8400  based on its .

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Differences What are the advantages of each

Front view of Intel Xeon E5405

Reasons to consider the
Intel Xeon E5405

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Significantly more l2 cache 12 MB vs 6 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More cores 4 vs 2 Twice as many cores; run more applications at once
Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

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Significantly higher clock speed 3 GHz vs 2 GHz 50% higher clock speed
Much better performance per dollar 20.83 pt/$ vs 7.43 pt/$ More than 2.8x better performance per dollar
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better PassMark (Single core) score 1,257 vs 864 More than 45% better PassMark (Single core) score
Slightly lower typical power consumption 52.81W vs 65W Around 20% lower typical power consumption
Higher Maximum Operating Temperature 72.4 °C vs 67 °C Around 10% higher Maximum Operating Temperature
Slightly lower annual commercial energy cost 56.94 $/year vs 70.08 $/year Around 20% lower annual commercial energy cost
Slightly lower annual home energy cost 15.66 $/year vs 19.27 $/year Around 20% lower annual home energy cost

Benchmarks Real world tests of Xeon E5405 vs Core2 Duo E8400

GeekBench (32-bit)

GeekBench

Passmark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5405  vs
Core2 Duo E8400 
Clock speed 2 GHz 3 GHz
Cores Quad core Dual core
Socket type
LGA 771
LGA 775
Is hyperthreaded No No

features

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

power consumption

TDP 80W 65W
Annual home energy cost 19.27 $/year 15.66 $/year
Annual commercial energy cost 70.08 $/year 56.94 $/year
Performance per watt 5.57 pt/W 5.77 pt/W
Typical power consumption 65W 52.81W

bus

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

details

Xeon E5405  vs
Core2 Duo E8400 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 12 MB 6 MB
L2 cache per core 3 MB/core 3 MB/core
Manufacture process 45 nms 45 nms
Transistor count 820,000,000 410,000,000
Max CPUs 2 1
Clock multiplier 6 9
Voltage range 0.85 - 1.35V 0.85 - 1.36V
Operating temperature Unknown - 67°C Unknown - 72.4°C

gpu

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 E5405
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Intel Core2 Duo E8400
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