AMD A8 3820 

Released December, 2011
  • 2.8 GHz
  • Quad core
3.7 Out of 10

CPUBoss Review Our evaluation of the AMD A8 3820 among desktop CPUs (45 to 75W)

Performance

Benchmark performance using all cores
A8 3820
5.0
Core i3 3220
6.1
A8 3800
5.2
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance
A8 3820
2.6
Core i3 3220
6.1
A8 3800
2.4
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics
A8 3820
6.5
Core i3 3220
4.4
A8 3800
6.6
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing
A8 3820
n.d.
Core i3 3220
4.5
A8 3800
n.d.
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?
A8 3820
2.6
Core i3 3220
4.6
A8 3800
2.7
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?
A8 3820
4.3
Core i3 3220
5.4
A8 3800
n.d.
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more
3.7

CPUBoss Score

Combination of all six facets
A8 3820
3.7
Core i3 3220
4.9
A8 3800
3.6

Benchmarks Real world tests of the AMD A8 3820

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

A8 3820
2,285
Core i3 3220
2,251
A8 3800
n.d.

Sky Diver Data courtesy FutureMark

A8 3820
2,380
Core i3 3220
932
A8 3800
2,344

Cloud Gate Data courtesy FutureMark

A8 3820
4,204
Core i3 3220
2,654
A8 3800
4,230

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A8 3820
4,151
Core i3 3220
5,399
A8 3800
4,656

GeekBench 3 (Single core) Data courtesy Primate Labs

A8 3820
1,426
Core i3 3220
2,501
A8 3800
1,308

GeekBench 3 (AES single core) Data courtesy Primate Labs

A8 3820
116.05 MB/s
Core i3 3220
173,000 MB/s
A8 3800
102,500 MB/s

PassMark Data courtesy Passmark

A8 3820
3,152
Core i3 3220
4,229
A8 3800
3,064

PassMark (Single Core)

A8 3820
874
Core i3 3220
1,764
A8 3800
860

Specifications Full list of technical specs

summary

Clock speed 2.8 GHz
Turbo clock speed 2.8 GHz
Cores Quad core
Is unlocked No

features

Has a NX bit Yes
Has virtualization support Yes
Instruction set extensions
  1. 3DNow!
  2. AMD-V
  3. AMD64
  4. MMX
  5. SSE
  6. SSE2
  7. SSE3
  8. SSE4a
Supports dynamic frequency scaling Yes

integrated graphics

GPU GPU
Label Radeon™ HD 6550D
Latest DirectX 11.0
GPU clock speed 600 MHz

memory controller

Memory controller Built-in
Memory type DDR3-1866

details

Architecture x86-64
Threads 4 threads
L2 cache 4 MB
L2 cache per core 1 MB/core
L3 cache 1 MB
L3 cache per core 0.25 MB/core
Manufacture process 32 nm
Transistor count 1,178,000,000
Max CPUs 1
Die size 228 mm²
Voltage range 0.45 - 1.41V
Operating temperature Unknown - 70.5°C

overclocking

Overclocked clock speed 2.87 GHz
Overclocked clock speed (Water) 2.5 GHz
Overclocked clock speed (Air) 2.87 GHz

power consumption

TDP 65W
Annual home energy cost 15.66 $/year
Annual commercial energy cost 56.94 $/year
Performance per watt 1.91 pt/W
Typical power consumption 52.81W
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