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Differences What are the advantages of each

Front view of Intel Xeon E7-4850

Reasons to consider the
Intel Xeon E7-4850

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Much more l3 cache 24 MB vs 16 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 20 vs 16 4 more threads
Much more l3 cache per core 2.4 MB/core vs 1 MB/core Around 2.5x more l3 cache per core
Front view of AMD Opteron 6276

Reasons to consider the
AMD Opteron 6276

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Much more l2 cache 16 MB vs 3 MB More than 5.2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher turbo clock speed 3.2 GHz vs 2.4 GHz Around 35% higher turbo clock speed
Much higher clock speed 2.3 GHz vs 2 GHz Around 15% higher clock speed
Much better overclocked clock speed (Air) 3.72 GHz vs 2.09 GHz Around 80% better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.3 MB/core More than 3.2x more l2 cache per core
Lower typical power consumption 93.44W vs 105.63W More than 10% lower typical power consumption
Much better overclocked clock speed (Water) 2.6 GHz vs 2 GHz More than 30% better overclocked clock speed (Water)
Lower annual commercial energy cost 100.74 $/year vs 113.88 $/year More than 10% lower annual commercial energy cost
Lower annual home energy cost 27.7 $/year vs 31.32 $/year More than 10% lower annual home energy cost
Newer Nov, 2011 vs Apr, 2011 Release date 7 months later

Features Key features of the Xeon E7-4850  vs Opteron 6276 

clock speed

Xeon E7-4850
2 GHz
Opteron 6276
2.3 GHz

turbo clock speed

Xeon E7-4850
2.4 GHz
Opteron 6276
3.2 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Xeon E7-4850
2.09 GHz
Opteron 6276
3.72 GHz

overclocked clock speed (water)

Xeon E7-4850
2 GHz
Opteron 6276
2.6 GHz

Specifications Full list of technical specs

summary

Xeon E7-4850  vs
Opteron 6276 
Clock speed 2 GHz 2.3 GHz
Turbo clock speed 2.4 GHz 3.2 GHz
Cores Deca core 16 core
Socket type
LGA 1567
G34

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES

power consumption

TDP 130W 115W
Annual home energy cost 31.32 $/year 27.7 $/year
Annual commercial energy cost 113.88 $/year 100.74 $/year
Typical power consumption 105.63W 93.44W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3
DDR

details

Xeon E7-4850  vs
Opteron 6276 
Threads 20 16
L2 cache 3 MB 16 MB
L2 cache per core 0.3 MB/core 1 MB/core
L3 cache 24 MB 16 MB
L3 cache per core 2.4 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 4 4
Clock multiplier 15 16
Operating temperature Unknown - 69°C Unknown - 55°C

overclocking

Overclocked clock speed 2.09 GHz 3.72 GHz
Overclocked clock speed (Water) 2 GHz 2.6 GHz
Overclocked clock speed (Air) 2.09 GHz 3.72 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
Number of links 1 4
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
Intel Xeon E7-4850
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AMD Opteron 6276
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