CPUBoss Review Our evaluation of L5420 vs L3406 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

5.1

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon L3406 

CPUBoss recommends the Intel Xeon L3406  based on its cost to run and value.

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VS

Differences What are the advantages of each

Front view of Intel Xeon L5420

Reasons to consider the
Intel Xeon L5420

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Much more l2 cache 12 MB vs 1 MB 12x 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 2.26 GHz More than 10% higher clock speed
More cores 4 vs 2 Twice as many cores; run more applications at once
Much better overclocked clock speed (Air) 3.67 GHz vs 2.27 GHz More than 60% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.85 GHz vs 2.27 GHz Around 70% better overclocked clock speed (Water)
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Front view of Intel Xeon L3406

Reasons to consider the
Intel Xeon L3406

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 24.38W vs 40.63W 40% lower typical power consumption
Newer Mar, 2010 vs Mar, 2008 Release date over 2 years later
Lower annual commercial energy cost 26.28 $/year vs 43.8 $/year Around 40% lower annual commercial energy cost
Lower annual home energy cost 7.23 $/year vs 12.04 $/year 40% lower annual home energy cost

Benchmarks Real world tests of Xeon L5420 vs L3406

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L5420
4,968
Xeon L3406
3,657

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon L5420
1,380
Xeon L3406
1,697

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5420
107,200 MB/s
Xeon L3406
155.1 MB/s

Specifications Full list of technical specs

summary

Xeon L5420  vs
L3406 
Clock speed 2.5 GHz 2.26 GHz
Cores Quad core Dual core
Socket type
LGA 771
LGA 1156

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
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

power consumption

TDP 50W 30W
Annual home energy cost 12.04 $/year 7.23 $/year
Annual commercial energy cost 43.8 $/year 26.28 $/year
Performance per watt 2.75 pt/W 2.57 pt/W
Typical power consumption 40.63W 24.38W

bus

Architecture FSB DMI
Number of links 1 1

details

Xeon L5420  vs
L3406 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 12 MB 1 MB
L2 cache per core 3 MB/core 0.5 MB/core
Manufacture process 45 nm 32 nm
Transistor count 820,000,000 382,000,000
Max CPUs 2 1
Clock multiplier 7 17
Voltage range 0.85 - 1.35V 0.65 - 1.4V
Operating temperature Unknown - 57°C Unknown - 53.9°C

overclocking

Overclocked clock speed 3.67 GHz 2.27 GHz
Overclocked clock speed (Water) 3.85 GHz 2.27 GHz
Overclocked clock speed (Air) 3.67 GHz 2.27 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 L5420
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Intel Xeon L3406
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