CPUBoss Review Our evaluation of 3800+ vs 620 among desktop 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

Fire Strike

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?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

3.6

CPUBoss Score

Combination of all six facets

Winner
AMD Athlon II X4 620 

CPUBoss recommends the AMD Athlon II X4 620  based on its performance, single-core performance and overclocking.

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VS

Differences What are the advantages of each

Front view of AMD Athlon X2 3800+

Reasons to consider the
AMD Athlon X2 3800+

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Much lower typical power consumption 52.81W vs 159W 3x lower typical power consumption
Much lower annual home energy cost 15.66 $/year vs 59.83 $/year 3.8x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 153.3 $/year 2.7x lower annual commercial energy cost
Better overclocked clock speed (Water) 2.75 GHz vs 2.6 GHz More than 5% 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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Much 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
Much newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l3 cache 0.5 MB vs 0 MB Compared to all cpus, 0.5 MB l3 cache is just OK
Much higher clock speed 2.6 GHz vs 2 GHz More than 30% higher clock speed
Much better PassMark score 2,950 vs 1,003 Around 3x better PassMark score
Much better PassMark (Single core) score 907 vs 675 Around 35% better PassMark (Single core) score
Much better geekbench 2 (32-bit) score 4,520 vs 1,494 More than 3x better geekbench 2 (32-bit) score
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much higher Maximum operating temperature 71 °C vs 55 °C Around 30% higher Maximum operating temperature
Much better overclocked clock speed (Air) 3.5 GHz vs 2.7 GHz Around 30% better overclocked clock speed (Air)
Newer Sep, 2009 vs May, 2006 Release date over 3 years later

Benchmarks Real world tests of Athlon X2 3800+ vs II X4 620

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

Athlon X2 3800+
64.55 MB/s
Athlon II X4 620
104,500 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Reviews Word on the street

Specifications Full list of technical specs

summary

Athlon X2 3800+  vs
II X4 620 
Clock speed 2 GHz 2.6 GHz
Cores Dual core Quad core
Socket type
AM2
939
AM3
Is unlocked No 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 65W 95W
Annual home energy cost 15.66 $/year 59.83 $/year
Annual commercial energy cost 56.94 $/year 153.3 $/year
Performance per watt 0.66 pt/W 0.73 pt/W
Typical power consumption 52.81W 159W

details

Athlon X2 3800+  vs
II X4 620 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 0 MB 0.5 MB
L3 cache per core 0 MB/core 0.13 MB/core
Manufacture process 90 nm 45 nm
Max CPUs 1 1
Voltage range 1.2 - 1.25V 0.93 - 1.43V
Operating temperature Unknown - 55°C Unknown - 71°C

overclocking

Overclocked clock speed 2.7 GHz 3.5 GHz
Overclocked clock speed (Water) 2.75 GHz 2.6 GHz
Overclocked clock speed (Air) 2.7 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
AMD Athlon X2 3800+
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AMD Athlon II X4 620
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