CPUBoss Review Our evaluation of E5405 vs E8400 among all CPUs

Performance

Benchmark performance using all cores
Xeon E5405
5.3
Core2 Duo E8400
5.2
Core2 Quad Q6600
5.3
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance
Xeon E5405
5.6
Core2 Duo E8400
6.2
Core2 Quad Q6600
5.8
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics
Xeon E5405
0.0
Core2 Duo E8400
0.0
Core2 Quad Q6600
0.0
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing
Xeon E5405
0.0
Core2 Duo E8400
0.0
Core2 Quad Q6600
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?
Xeon E5405
5.0
Core2 Duo E8400
5.0
Core2 Quad Q6600
5.0
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?
Xeon E5405
n.d.
Core2 Duo E8400
n.d.
Core2 Quad Q6600
n.d.
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS

Intel Xeon E5405

Front view of Intel Xeon E5405
Front view of Intel Core2 Duo E8400

Intel Core2 Duo E8400

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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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Much 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
Much better performance per dollar 0.48 pt/$ vs 0.01 pt/$ Around 40.8x better performance per dollar
More cores 4 vs 2 Twice as many cores; run more applications at once
Better geekbench 3 Multi-Core score 3,971 vs 2,982 Around 35% better geekbench 3 Multi-Core score
More threads 4 vs 2 Twice as many threads
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 overclocked clock speed (Air) 4.22 GHz vs 2.38 GHz Around 80% better overclocked clock speed (Air)
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Lower typical power consumption 52.81W vs 65W Around 20% lower typical power consumption
Better PassMark (Single core) score 1,251 vs 865 Around 45% better PassMark (Single core) score
Higher Maximum operating temperature 72.4 °C vs 67 °C Around 10% higher Maximum operating temperature
Significantly better overclocked clock speed (Water) 4.23 GHz vs 2.96 GHz Around 45% better overclocked clock speed (Water)
Lower annual commercial energy cost 56.94 $/year vs 70.08 $/year Around 20% lower annual commercial energy cost
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 3 (Multi-core) Data courtesy Primate Labs

Xeon E5405
3,971
Core2 Duo E8400
2,982

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5405
1,095
Core2 Duo E8400
1,625

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5405
85,200 MB/s
Core2 Duo E8400
128,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5405
3,706
Core2 Duo E8400
2,826

GeekBench

Xeon E5405
3,706
Core2 Duo E8400
4,794

PassMark Data courtesy Passmark

Xeon E5405
2,897
Core2 Duo E8400
2,160

PassMark (Single Core)

Xeon E5405
865
Core2 Duo E8400
1,251

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

features
Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
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 1.39 pt/W 1.83 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 nm 45 nm
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

overclocking
Overclocked clock speed 2.38 GHz 4.22 GHz
Overclocked clock speed (Water) 2.96 GHz 4.23 GHz
Overclocked clock speed (Air) 2.38 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 E5405
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Intel Core2 Duo E8400
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