Intel Xeon L5420 vs E5420

older Released March, 2008

Intel Xeon L5420

2.5 GHz
Quad core

Front view of Intel Xeon L5420

5.1 Out of 10

Reasons to buy the Intel Xeon L5420

	Much better overclocked clock speed (Air) 3.67 GHz		Significantly lower typical power consumption 40.63W
	Significantly lower annual commercial energy cost 43.8 $/year		Significantly lower annual home energy cost 12.04 $/year

VS

older Released November, 2007

Intel Xeon E5420

2.5 GHz
Quad core

Front view of Intel Xeon E5420

5.1 Out of 10

Reasons to buy the E5420

Better overclocked clock speed (Water)

3.94 GHz

	Performance
	Benchmark performance using all cores
Xeon L5420 5.4 Xeon E5420 5.4 Xeon E5335 5.2
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

	Single-core Performance
	Individual core benchmark performance
Xeon L5420 5.9 Xeon E5420 5.9 Xeon E5335 5.6
PassMark (Single Core), Geekbench 3 Single Core and 1 more

	Integrated Graphics
	Integrated GPU performance for graphics
Xeon L5420 0.0 Xeon E5420 0.0 Xeon E5335 0.0
Sky Diver and Cloud Gate

	Integrated Graphics (OpenCL)
	Integrated GPU performance for parallel computing
Xeon L5420 0.0 Xeon E5420 0.0 Xeon E5335 0.0
CompuBench 1.5 Bitcoin mining and 4 more

	Performance per Watt
	How efficiently does the processor use electricity?
Xeon L5420 5.1 Xeon E5420 5.0 Xeon E5335 5.0
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

	Value
	Are you paying a premium for performance?
Xeon L5420 n.d. Xeon E5420 n.d. Xeon E5335 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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Intel Xeon L5420

Front view of Intel Xeon L5420

Front view of Intel Xeon E5420

Intel Xeon E5420

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Front view of Intel Xeon L5420

Reasons to consider the
Intel Xeon L5420

Report a correction

Much better overclocked clock speed (Air)

3.67 GHz

vs

3.19 GHz

Around 15% better overclocked clock speed (Air)

Significantly lower typical power consumption

40.63W

vs

65W

Around 40% lower typical power consumption

Significantly lower annual commercial energy cost

43.8 $/year

vs

70.08 $/year

Around 40% lower annual commercial energy cost

Significantly lower annual home energy cost

12.04 $/year

vs

19.27 $/year

More than 35% lower annual home energy cost

Front view of Intel Xeon E5420

Reasons to consider the
Intel Xeon E5420

Report a correction

Better overclocked clock speed (Water)

3.94 GHz

vs

3.85 GHz

Almost the same

GeekBench 3 (Multi-core) Data courtesy Primate Labs

4,968

5,821

GeekBench 3 (Single core) Data courtesy Primate Labs

1,380

1,317

GeekBench 3 (AES single core) Data courtesy Primate Labs

107,200 MB/s

106,200 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

4,473

4,529

GeekBench (64-bit) Data courtesy Primate Labs

5,037

6,104

GeekBench

5,037

6,104

PassMark Data courtesy Passmark

3,506

3,534

PassMark (Single Core)

1,043

1,073

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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