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Differences What are the advantages of each

Front view of Intel Xeon X5680

Reasons to consider the
Intel Xeon X5680

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Much higher clock speed 3.33 GHz vs 2.66 GHz More than 25% higher clock speed
Much higher turbo clock speed 3.6 GHz vs 2.8 GHz Around 30% higher turbo clock speed
Much better overclocked clock speed (Air) 4.24 GHz vs 2.67 GHz Around 60% better overclocked clock speed (Air)
More threads 12 vs 8 4 more threads
Much better overclocked clock speed (Water) 4.55 GHz vs 2.67 GHz More than 70% better overclocked clock speed (Water)
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Front view of Intel Xeon E7-8837

Reasons to consider the
Intel Xeon E7-8837

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Supports more RAM 4,194,304 MB vs 294,912 MB Supports around 14.2x more RAM
Much more l3 cache 24 MB vs 12 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Much more l3 cache per core 3 MB/core vs 2 MB/core 50% more l3 cache per core
Newer Apr, 2011 vs Mar, 2010 Release date over 1 years later

Benchmarks Real world tests of Xeon X5680 vs E7-8837

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon X5680
21,510
Xeon E7-8837
18,182

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon X5680
2,414
Xeon E7-8837
1,802

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon X5680
1,560,000 MB/s
Xeon E7-8837
1,065,000 MB/s

Specifications Full list of technical specs

summary

Xeon X5680  vs
E7-8837 
Clock speed 3.33 GHz 2.66 GHz
Turbo clock speed 3.6 GHz 2.8 GHz
Cores Hexa core Octa core
Socket type
LGA 1366
LGA 1567

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 130W 130W
Annual home energy cost 31.32 $/year 31.32 $/year
Annual commercial energy cost 113.88 $/year 113.88 $/year
Performance per watt 6.11 pt/W 6.33 pt/W
Typical power consumption 105.63W 105.63W

bus

Architecture QPI QPI
Number of links 2 1
Data rate 51,200 MB/s 25,600 MB/s
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz

details

Xeon X5680  vs
E7-8837 
Architecture x86-64 x86-64
Threads 12 8
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 24 MB
L3 cache per core 2 MB/core 3 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 8
Clock multiplier 25 20
Operating temperature Unknown - 78.5°C Unknown - 69°C

overclocking

Overclocked clock speed 4.24 GHz 2.67 GHz
Overclocked clock speed (Water) 4.55 GHz 2.67 GHz
Overclocked clock speed (Air) 4.24 GHz 2.67 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
DDR3-800
DDR
Channels Triple Channel Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 25,600 MB/s
Maximum memory size 294,912 MB 4,194,304 MB
Intel Xeon X5680
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Intel Xeon E7-8837
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