CPUBoss Review Our evaluation of X620 vs 620 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

No winner declared

Too close to call

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VS

Differences What are the advantages of each

Front view of AMD Phenom II X620

Reasons to consider the
AMD Phenom II X620

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much lower typical power consumption 36.56W vs 159W 4.3x lower typical power consumption
Higher clock speed 3.1 GHz vs 2.6 GHz Around 20% higher clock speed
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much lower annual home energy cost 10.84 $/year vs 59.83 $/year 5.5x lower annual home energy cost
Much lower annual commercial energy cost 39.42 $/year vs 153.3 $/year 3.9x lower annual commercial energy cost
Better PassMark (Single core) score 1,174 vs 907 Around 30% better PassMark (Single core) score
Better performance per watt 2.46 pt/W vs 0.73 pt/W Around 3.5x better performance per watt
Newer May, 2010 vs Sep, 2009 Release date 7 months later
Better overclocked clock speed (Water) 3.1 GHz vs 2.6 GHz Around 20% better overclocked clock speed (Water)
Front view of AMD Athlon II X4 620

Reasons to consider the
AMD Athlon II X4 620

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More cores 4 vs 2 Twice as many cores; run more applications at once
Better overclocked clock speed (Air) 3.5 GHz vs 3.1 GHz Around 15% better overclocked clock speed (Air)
More threads 4 vs 2 Twice as many threads

Benchmarks Real world tests of Phenom II X620 vs Athlon II X4 620

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom II X620  vs
Athlon II X4 620 
Clock speed 3.1 GHz 2.6 GHz
Cores Dual core Quad core
Socket type
S1
AM3
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 45W 95W
Annual home energy cost 10.84 $/year 59.83 $/year
Annual commercial energy cost 39.42 $/year 153.3 $/year
Performance per watt 2.46 pt/W 0.73 pt/W
Typical power consumption 36.56W 159W

details

Phenom II X620  vs
Athlon II X4 620 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 2 MB 2 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.1 GHz 3.5 GHz
Overclocked clock speed (Water) 3.1 GHz 2.6 GHz
Overclocked clock speed (Air) 3.1 GHz 3.5 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

Clock speed 1,800 MHz 2,000 MHz
AMD Phenom II X620
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AMD Athlon II X4 620
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