CPUBoss Review Our evaluation of E5420 vs 2356 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

Intel Xeon E5420

CPUBoss Winner
Front view of Intel Xeon E5420

Differences What are the advantages of each

Front view of Intel Xeon E5420

Reasons to consider the
Intel Xeon E5420

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Much more l2 cache 12 MB vs 2 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 3 MB/core vs 0.5 MB/core 6x more l2 cache per core
Significantly higher clock speed 2.5 GHz vs 2.3 GHz Around 10% higher clock speed
Much better overclocked clock speed (Air) 3.19 GHz vs 2.43 GHz More than 30% better overclocked clock speed (Air)
Newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Water) 3.94 GHz vs 2.3 GHz More than 70% better overclocked clock speed (Water)
Front view of AMD Opteron 2356

Reasons to consider the
AMD Opteron 2356

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Slightly lower typical power consumption 60.94W vs 65W More than 5% lower typical power consumption
Slightly lower annual home energy cost 18.07 $/year vs 19.27 $/year More than 5% lower annual home energy cost
Slightly lower annual commercial energy cost 65.7 $/year vs 70.08 $/year More than 5% lower annual commercial energy cost
Newer Apr, 2008 vs Nov, 2007 Release date 4 months later

Benchmarks Real world tests of Xeon E5420 vs Opteron 2356

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5420
5,821
Opteron 2356
7,681

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5420
1,317
Opteron 2356
1,090

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5420
106,200 MB/s
Opteron 2356
86.9 MB/s

PassMark Data courtesy Passmark

Xeon E5420
3,534
Opteron 2356
2,814

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5420  vs
Opteron 2356 
Clock speed 2.5 GHz 2.3 GHz
Cores Quad core Quad core
Socket type
LGA 771
F

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 80W 75W
Annual home energy cost 19.27 $/year 18.07 $/year
Annual commercial energy cost 70.08 $/year 65.7 $/year
Performance per watt 1.78 pt/W 1.36 pt/W
Typical power consumption 65W 60.94W

details

Xeon E5420  vs
Opteron 2356 
Threads 4 4
L2 cache 12 MB 2 MB
L2 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 65 nm
Max CPUs 2 2
Clock multiplier 7 11
Voltage range 0.85 - 1.35V 1 - UnknownV
Operating temperature Unknown - 67°C 0 - 55°C

overclocking

Overclocked clock speed 3.19 GHz 2.43 GHz
Overclocked clock speed (Water) 3.94 GHz 2.3 GHz
Overclocked clock speed (Air) 3.19 GHz 2.43 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

bus

Clock speed 1,333 MHz 2,000 MHz
Intel Xeon E5420
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AMD Opteron 2356
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