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Intel Xeon L5640

Front view of Intel Xeon L5640
Front view of AMD Opteron 4376 HE

AMD Opteron 4376 HE

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Differences What are the advantages of each

Front view of Intel Xeon L5640

Reasons to consider the
Intel Xeon L5640

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Much more l3 cache 12 MB vs 8 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
Much better overclocked clock speed (Air) 3.9 GHz vs 2.6 GHz More than 50% better overclocked clock speed (Air)
More threads 12 vs 8 4 more threads
Much more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Front view of AMD Opteron 4376 HE

Reasons to consider the
AMD Opteron 4376 HE

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Much more l2 cache 8 MB vs 2 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher turbo clock speed 3.6 GHz vs 2.8 GHz Around 30% higher turbo clock speed
Much higher clock speed 2.6 GHz vs 2.26 GHz More than 15% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Much better overclocked clock speed (Water) 2.6 GHz vs 2.27 GHz Around 15% better overclocked clock speed (Water)
Newer Dec, 2012 vs Mar, 2010 Release date over 2 years later

Features Key features of the Xeon L5640  vs Opteron 4376 HE 

clock speed

Xeon L5640
2.26 GHz
Opteron 4376 HE
2.6 GHz

turbo clock speed

Xeon L5640
2.8 GHz
Opteron 4376 HE
3.6 GHz

L2 cache

Xeon L5640
2 MB
Opteron 4376 HE
8 MB

L3 cache

Xeon L5640
12 MB
Opteron 4376 HE
8 MB

overclocked clock speed (air)

Xeon L5640
3.9 GHz
Opteron 4376 HE
2.6 GHz

overclocked clock speed (water)

Xeon L5640
2.27 GHz
Opteron 4376 HE
2.6 GHz

Specifications Full list of technical specs

summary

 Xeon L5640  vs
Opteron 4376 HE 
Clock speed 2.26 GHz 2.6 GHz
Turbo clock speed 2.8 GHz 3.6 GHz
Cores Hexa core Octa core
Socket type
LGA 1366
C32

features
Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption
TDP 60W 65W
Annual home energy cost 14.45 $/year 15.66 $/year
Annual commercial energy cost 52.56 $/year 56.94 $/year
Typical power consumption 48.75W 52.81W

memory controller
Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 12,800 MB/s

details

 Xeon L5640  vs
Opteron 4376 HE 
Threads 12 8
L2 cache 2 MB 8 MB
L2 cache per core 0.33 MB/core 1 MB/core
L3 cache 12 MB 8 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 2
Clock multiplier 17 13
Operating temperature Unknown - 69.4°C Unknown - 68°C

overclocking
Overclocked clock speed 3.9 GHz 2.6 GHz
Overclocked clock speed (Water) 2.27 GHz 2.6 GHz
Overclocked clock speed (Air) 3.9 GHz 2.6 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 HyperTransport 3.0
Transfer rate 5,860 MT/s 6,400 MT/s
Clock speed 2,930 MHz 3,200 MHz
Intel Xeon L5640
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AMD Opteron 4376 HE
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