CPUBoss Review Our evaluation of E5-2620 vs 6272 among all CPUs

Performance

Benchmark performance using all cores
Xeon E5-2620
6.0
Opteron 6272
6.3
Xeon E5 2620 v2
5.6
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance
Xeon E5-2620
7.9
Opteron 6272
7.2
Xeon E5 2620 v2
8.4
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics
Xeon E5-2620
n.d.
Opteron 6272
n.d.
Xeon E5 2620 v2
n.d.
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing
Xeon E5-2620
0.0
Opteron 6272
0.0
Xeon E5 2620 v2
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?
Xeon E5-2620
5.0
Opteron 6272
5.0
Xeon E5 2620 v2
5.1
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?
Xeon E5-2620
n.d.
Opteron 6272
n.d.
Xeon E5 2620 v2
n.d.
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more
5.3

CPUBoss Score

Combination of all six facets
Xeon E5-2620
5.3
Opteron 6272
5.2
Xeon E5 2620 v2
5.3

Winner
Intel Xeon E5-2620 

CPUBoss recommends the Intel Xeon E5-2620  based on its single-core performance and cost to run.

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VS

Intel Xeon E5-2620

Front view of Intel Xeon E5-2620
Front view of AMD Opteron 6272

AMD Opteron 6272

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Differences What are the advantages of each

Front view of Intel Xeon E5-2620

Reasons to consider the
Intel Xeon E5-2620

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much more l3 cache per core 2.5 MB/core vs 1 MB/core 2.5x more l3 cache per core
Lower typical power consumption 77.19W vs 93.44W More than 15% lower typical power consumption
Lower annual commercial energy cost 83.22 $/year vs 100.74 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 22.89 $/year vs 27.7 $/year More than 15% lower annual home energy cost
Front view of AMD Opteron 6272

Reasons to consider the
AMD Opteron 6272

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Much more l2 cache 16 MB vs 2 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly higher turbo clock speed 3 GHz vs 2.5 GHz 20% higher turbo clock speed
Higher clock speed 2.1 GHz vs 2 GHz More than 5% 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
More threads 16 vs 12 4 more threads
Much better overclocked clock speed (Air) 2.9 GHz vs 2.28 GHz More than 25% better overclocked clock speed (Air)
More l3 cache 16 MB vs 15 MB More than 5% more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Much better overclocked clock speed (Water) 2.4 GHz vs 2 GHz Around 20% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon E5-2620 vs Opteron 6272

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-2620
10,510
Opteron 6272
26,707

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5-2620
1,736
Opteron 6272
1,255

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2620
1,315,000 MB/s
Opteron 6272
1,350,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5-2620
12,059
Opteron 6272
9,635

GeekBench

Xeon E5-2620
13,391
Opteron 6272
9,635

PassMark Data courtesy Passmark

Xeon E5-2620
7,957
Opteron 6272
6,748

PassMark (Single Core)

Xeon E5-2620
1,231
Opteron 6272
695

Specifications Full list of technical specs

summary

 Xeon E5-2620  vs
Opteron 6272 
Clock speed 2 GHz 2.1 GHz
Turbo clock speed 2.5 GHz 3 GHz
Cores Hexa core 16 core
Socket type
LGA 2011
G34
Is unlocked Yes No

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

power consumption
TDP 95W 115W
Annual home energy cost 22.89 $/year 27.7 $/year
Annual commercial energy cost 83.22 $/year 100.74 $/year
Performance per watt 6.57 pt/W 6.12 pt/W
Typical power consumption 77.19W 93.44W

memory controller
Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3

details

 Xeon E5-2620  vs
Opteron 6272 
Threads 12 16
L2 cache 2 MB 16 MB
L2 cache per core 0.33 MB/core 1 MB/core
L3 cache 15 MB 16 MB
L3 cache per core 2.5 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 4
Clock multiplier 25 15
Operating temperature Unknown - 77.4°C Unknown - 55°C

overclocking
Overclock popularity 4 2
Overclocked clock speed 2.28 GHz 2.9 GHz
Overclocked clock speed (Water) 2 GHz 2.4 GHz
Overclocked clock speed (Air) 2.28 GHz 2.9 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 2 4
Transfer rate 7,200 MT/s 6,400 MT/s
Clock speed 3,600 MHz 3,200 MHz
Intel Xeon E5-2620
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AMD Opteron 6272
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