CPUBoss Review Our evaluation of L5420 vs E5420 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 L5420

CPUBoss Winner
Front view of Intel Xeon L5420

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 lower typical power consumption 40.63W vs 65W Around 40% lower typical power consumption
Much lower annual home energy cost 12.04 $/year vs 19.27 $/year More than 35% lower annual home energy cost
Much lower annual commercial energy cost 43.8 $/year vs 70.08 $/year Around 40% lower annual commercial energy cost
Much better overclocked clock speed (Air) 3.67 GHz vs 3.19 GHz Around 15% better overclocked clock speed (Air)
Newer Mar, 2008 vs Nov, 2007 Release date 4 months later
Front view of Intel Xeon E5420

Reasons to consider the
Intel Xeon E5420

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Better overclocked clock speed (Water) 3.94 GHz vs 3.85 GHz Almost the same

Benchmarks Real world tests of Xeon L5420 vs E5420

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L5420
4,968
Xeon E5420
5,821

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon L5420
1,380
Xeon E5420
1,317

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5420
107,200 MB/s
Xeon E5420
106,200 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon L5420
4,473
Xeon E5420
4,529

GeekBench (64-bit) Data courtesy Primate Labs

Xeon L5420
5,037
Xeon E5420
6,104

GeekBench

Xeon L5420
5,037
Xeon E5420
6,104

PassMark Data courtesy Passmark

Xeon L5420
3,506
Xeon E5420
3,534

PassMark (Single Core)

Xeon L5420
1,043
Xeon E5420
1,073

Specifications Full list of technical specs

summary

Xeon L5420  vs
E5420 
Clock speed 2.5 GHz 2.5 GHz
Cores Quad core Quad core
Socket type
LGA 771

features

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

power consumption

TDP 50W 80W
Annual home energy cost 12.04 $/year 19.27 $/year
Annual commercial energy cost 43.8 $/year 70.08 $/year
Performance per watt 2.75 pt/W 1.78 pt/W
Typical power consumption 40.63W 65W

bus

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

details

Xeon L5420  vs
E5420 
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 2
Clock multiplier 7 7
Voltage range 0.85 - 1.35V 0.85 - 1.35V
Operating temperature Unknown - 57°C Unknown - 67°C

overclocking

Overclocked clock speed 3.67 GHz 3.19 GHz
Overclocked clock speed (Water) 3.85 GHz 3.94 GHz
Overclocked clock speed (Air) 3.67 GHz 3.19 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 E5420
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