Cast your vote Do you agree or disagree with CPUBoss?

Thanks for adding your opinion. Follow us on Facebook to stay up to date with the latest news!
VS

Differences What are the advantages of each

Front view of Intel Xeon L5640

Reasons to consider the
Intel Xeon L5640

Report a correction
Lower typical power consumption 48.75W vs 65W 25% lower typical power consumption
Lower annual commercial energy cost 52.56 $/year vs 70.08 $/year Around 25% lower annual commercial energy cost
Lower annual home energy cost 14.45 $/year vs 19.27 $/year Around 25% lower annual home energy cost
Front view of Intel Xeon E5649

Reasons to consider the
Intel Xeon E5649

Report a correction
Significantly higher clock speed 2.53 GHz vs 2.26 GHz More than 10% higher clock speed
Higher turbo clock speed 2.93 GHz vs 2.8 GHz Around 5% higher turbo clock speed
Much better overclocked clock speed (Water) 4.11 GHz vs 2.27 GHz More than 80% better overclocked clock speed (Water)
Much better overclocked clock speed (Air) 4.25 GHz vs 3.9 GHz Around 10% better overclocked clock speed (Air)
Newer Feb, 2011 vs Mar, 2010 Release date 11 months later

Benchmarks Real world tests of Xeon L5640 vs E5649

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L5640
16,852
Xeon E5649
10,428

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon L5640
1,918
Xeon E5649
1,902

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5640
1,250,000 MB/s
Xeon E5649
1,240,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon L5640
11,047
Xeon E5649
11,227

GeekBench

Xeon L5640
11,047
Xeon E5649
11,227

PassMark Data courtesy Passmark

Xeon L5640
6,451
Xeon E5649
7,051

PassMark (Single Core)

Xeon L5640
1,100
Xeon E5649
1,162

Specifications Full list of technical specs

summary

Xeon L5640  vs
E5649 
Clock speed 2.26 GHz 2.53 GHz
Turbo clock speed 2.8 GHz 2.93 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

power consumption

TDP 60W 80W
Annual home energy cost 14.45 $/year 19.27 $/year
Annual commercial energy cost 52.56 $/year 70.08 $/year
Performance per watt 10.46 pt/W 7.4 pt/W
Typical power consumption 48.75W 65W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Triple Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 31,999.98 MB/s
Maximum memory size 294,912 MB 294,912 MB

details

Xeon L5640  vs
E5649 
Architecture x86-64 x86-64
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
Clock multiplier 17 19
Voltage range 0.75 - 1.35V 0.75 - 1.35V
Operating temperature Unknown - 69.4°C Unknown - 76.2°C

overclocking

Overclocked clock speed 3.9 GHz 4.25 GHz
Overclocked clock speed (Water) 2.27 GHz 4.11 GHz
Overclocked clock speed (Air) 3.9 GHz 4.25 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

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 2,930 MHz
Intel Xeon L5640
Report a correction
Intel Xeon E5649
Report a correction

Read more

Comments

comments powered by Disqus