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Differences What are the advantages of each

Front view of Intel Core i5 2300

Reasons to consider the
Intel Core i5 2300

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Higher clock speed 2.8 GHz vs 2.2 GHz More than 25% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better geekbench 3 single core score 2,448 vs 1,048 More than 2.2x better geekbench 3 single core score
Much better performance per watt 7.79 pt/W vs 0.92 pt/W Around 8.5x better performance per watt
Significantly better overclocked clock speed (Air) 3.29 GHz vs 2.2 GHz Around 50% better overclocked clock speed (Air)
Significantly higher Maximum operating temperature 72.6 °C vs 55 °C More than 30% higher Maximum operating temperature
Better PassMark score 5,322 vs 2,942 More than 80% better PassMark score
Much better overclocked clock speed (Water) 3.55 GHz vs 2.2 GHz More than 60% better overclocked clock speed (Water)
Newer Jan, 2011 vs Jun, 2010 Release date 6 months later
Front view of AMD Opteron 4122

Reasons to consider the
AMD Opteron 4122

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Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core

Benchmarks Real world tests of Core i5 2300 vs Opteron 4122

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 2300
2,070,000 MB/s
Opteron 4122
88.3 MB/s

PassMark Data courtesy Passmark

Specifications Full list of technical specs

summary

Core i5 2300  vs
Opteron 4122 
Clock speed 2.8 GHz 2.2 GHz
Cores Quad core Quad core
Socket type
LGA 1155
C32
Is unlocked No 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
3DNow!
Supplemental SSE3
AES

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 7.79 pt/W 0.92 pt/W
Typical power consumption 77.19W 77.19W

details

Core i5 2300  vs
Opteron 4122 
Threads 4 4
L2 cache 1 MB 2 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 6 MB 6 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 2
Clock multiplier 28 11
Operating temperature Unknown - 72.6°C 0 - 55°C

overclocking

Overclocked clock speed 3.29 GHz 2.2 GHz
Overclocked clock speed (Water) 3.55 GHz 2.2 GHz
Overclocked clock speed (Air) 3.29 GHz 2.2 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 2000 N/A
Number of displays supported 2 N/A
GPU clock speed 850 MHz N/A
Turbo clock speed 1,100 MHz N/A

bus

Architecture DMI HyperTransport 3.0
Intel Core i5 2300
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AMD Opteron 4122
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