Intel Xeon L5640 vs L5639

older Released March, 2010

Intel Xeon L5640

2.26 GHz
Hexa core

Front view of Intel Xeon L5640

Reasons to buy the Intel Xeon L5640

	Higher clock speed 2.26 GHz		Much better overclocked clock speed (Air) 3.9 GHz
	Better overclocked clock speed (Water) 2.27 GHz

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rumored First seen on January, 2013

Intel Xeon L5639

2.13 GHz
Hexa core

Front view of Intel Xeon L5639

Reasons to buy the L5639

Much better performance per dollar

2.23 pt/$

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Intel Xeon L5640

Front view of Intel Xeon L5640

Front view of Intel Xeon L5639

Intel Xeon L5639

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Front view of Intel Xeon L5640

Reasons to consider the
Intel Xeon L5640

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Higher clock speed

2.26 GHz

vs

2.13 GHz

More than 5% higher clock speed

Much better overclocked clock speed (Air)

3.9 GHz

vs

3.46 GHz

Around 15% better overclocked clock speed (Air)

Better overclocked clock speed (Water)

2.27 GHz

vs

2.13 GHz

More than 5% better overclocked clock speed (Water)

Front view of Intel Xeon L5639

Reasons to consider the
Intel Xeon L5639

Report a correction

Much better performance per dollar

2.23 pt/$

vs

0.63 pt/$

More than 3.5x better performance per dollar

GeekBench 3 (Multi-core) Data courtesy Primate Labs

16,852

14,645

GeekBench 3 (Single core) Data courtesy Primate Labs

1,918

2,085

GeekBench 3 (AES single core) Data courtesy Primate Labs

1,250,000 MB/s

1,390,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

11,047

9,881

GeekBench

11,047

13,956

PassMark Data courtesy Passmark

6,451

7,021

PassMark (Single Core)

1,100

1,125

summary	Xeon L5640	vs	L5639
Clock speed	2.26 GHz		2.13 GHz
Cores	Hexa core		Hexa core
Socket type
LGA 1366
features
Has a NX bit	Yes		Yes
Supports trusted computing	Yes		Yes
Has virtualization support	Yes		Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling	Yes		Yes
bus
Architecture	QPI		QPI
Number of links	2		2
Data rate	46,928 MB/s		46,928 MB/s
Transfer rate	5,860 MT/s		5,860 MT/s
Clock speed	2,930 MHz		2,933 MHz

details	Xeon L5640	vs	L5639
Threads	12		12
L2 cache	2 MB		2 MB
L2 cache per core	0.33 MB/core		0.33 MB/core
L3 cache	12 MB		12 MB
L3 cache per core	2 MB/core		2 MB/core
Manufacture process	32 nm		32 nm
Max CPUs	2		2
overclocking
Overclocked clock speed	3.9 GHz		3.46 GHz
Overclocked clock speed (Water)	2.27 GHz		2.13 GHz
Overclocked clock speed (Air)	3.9 GHz		3.46 GHz
power consumption
TDP	60W		60W
Annual home energy cost	14.45 $/year		14.45 $/year
Annual commercial energy cost	52.56 $/year		52.56 $/year
Performance per watt	10.46 pt/W		11.16 pt/W
Typical power consumption	48.75W		48.75W

Intel Xeon L5640

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Intel Xeon L5639

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