CPUBoss Review Our evaluation of 4820K vs 4280 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.4

CPUBoss Score

Combination of all six facets

Winner
Intel Core i7 4820K 

CPUBoss recommends the Intel Core i7 4820K  based on its performance and single-core performance.

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VS

Intel Core i7 4820K

CPUBoss Winner
Front view of Intel Core i7 4820K

Differences What are the advantages of each

Front view of Intel Core i7 4820K

Reasons to consider the
Intel Core i7 4820K

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much higher turbo clock speed 3.9 GHz vs 2.2 GHz More than 75% higher turbo clock speed
Significantly higher clock speed 3.7 GHz vs 2.8 GHz More than 30% higher clock speed
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better PassMark (Single core) score 2,009 vs 1,078 More than 85% better PassMark (Single core) score
Much more l3 cache per core 2.5 MB/core vs 1 MB/core 2.5x more l3 cache per core
Much better overclocked clock speed (Air) 4.57 GHz vs 2.8 GHz Around 65% better overclocked clock speed (Air)
Slightly more l3 cache 10 MB vs 8 MB 25% more l3 cache; more data can be stored in the l3 cache for quick access later
Better PassMark score 9,740 vs 6,430 More than 50% better PassMark score
Much better overclocked clock speed (Water) 4.68 GHz vs 2.8 GHz More than 65% better overclocked clock speed (Water)
Newer Jul, 2013 vs Nov, 2011 Release date over 1 years later
Front view of AMD Opteron 4280

Reasons to consider the
AMD Opteron 4280

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly lower typical power consumption 77.19W vs 105.63W More than 25% lower typical power consumption
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
More cores 8 vs 4 Twice as many cores; run more applications at once
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Significantly lower annual home energy cost 22.89 $/year vs 31.32 $/year More than 25% lower annual home energy cost
Significantly lower annual commercial energy cost 83.22 $/year vs 113.88 $/year More than 25% lower annual commercial energy cost
Slightly higher Maximum operating temperature 70.5 °C vs 66.8 °C More than 5% higher Maximum operating temperature

Benchmarks Real world tests of Core i7 4820K vs Opteron 4280

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 i7 4820K
2,500,000 MB/s
Opteron 4280
2,065,000 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i7 4820K  vs
Opteron 4280 
Clock speed 3.7 GHz 2.8 GHz
Turbo clock speed 3.9 GHz 2.2 GHz
Cores Quad core Octa core
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 130W 95W
Annual home energy cost 31.32 $/year 22.89 $/year
Annual commercial energy cost 113.88 $/year 83.22 $/year
Performance per watt 8.43 pt/W 8.92 pt/W
Typical power consumption 105.63W 77.19W

bus

Architecture DMI 2.0 HyperTransport 3.0
Transfer rate 5,000 MT/s 6,400 MT/s

details

Core i7 4820K  vs
Opteron 4280 
Threads 8 8
L2 cache 1 MB 8 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 10 MB 8 MB
L3 cache per core 2.5 MB/core 1 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 2
Operating temperature Unknown - 66.8°C Unknown - 70.5°C

overclocking

Overclocked clock speed 4.57 GHz 2.8 GHz
Overclocked clock speed (Water) 4.68 GHz 2.8 GHz
Overclocked clock speed (Air) 4.57 GHz 2.8 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
DDR3-1866
DDR3-1600
DDR3-1333
DDR3
Intel Core i7 4820K
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AMD Opteron 4280
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