AMD Athlon II X4 651 

Released November, 2011
  • 3 GHz
  • Quad core
4.5 Out of 10

CPUBoss Review Our evaluation of the AMD Athlon II X4 651 among desktop CPUs (over 75W)

Performance

Benchmark performance using all cores

Athlon II X4 651
4.9
A8 3870K
4.8
A8 3850
4.2
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Athlon II X4 651
3.7
A8 3870K
3.7
A8 3850
3.6
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Athlon II X4 651
0.0
A8 3870K
7.3
A8 3850
7.2
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Athlon II X4 651
0.0
A8 3870K
7.4
A8 3850
7.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Athlon II X4 651
5.3
A8 3870K
7.5
A8 3850
7.3
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Athlon II X4 651
n.d.
A8 3870K
n.d.
A8 3850
n.d.
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

4.5

CPUBoss Score

Combination of all six facets

Athlon II X4 651
4.5
A8 3870K
7.8
A8 3850
7.6

Benchmarks Real world tests of the AMD Athlon II X4 651

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Athlon II X4 651
5,570
A8 3850
5,262
A8 3870K
5,602

GeekBench 3 (Single core) Data courtesy Primate Labs

Athlon II X4 651
1,558
A8 3850
1,517
A8 3870K
1,597

GeekBench 3 (AES single core) Data courtesy Primate Labs

Athlon II X4 651
125,700 MB/s
A8 3850
121,450 MB/s
A8 3870K
126,200 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Athlon II X4 651
5,328
A8 3870K
5,339
A8 3850
5,321

GeekBench

Athlon II X4 651
5,328
A8 3850
7,685
A8 3870K
7,554

3D Mark 11 (Physics)

Athlon II X4 651
2,890
A8 3870K
1,102
A8 3850
3,470

PassMark Data courtesy Passmark

Athlon II X4 651
3,569
A8 3850
3,489
A8 3870K
3,597

PassMark (Single Core)

Athlon II X4 651
1,049
A8 3850
995
A8 3870K
1,032

Specifications Full list of technical specs

summary

Clock speed 3 GHz
Turbo clock speed None
Cores Quad core
Socket type FM1

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

power consumption

TDP 100W
Annual home energy cost 24.09 $/year
Annual commercial energy cost 87.6 $/year
Performance per watt 1.53 pt/W
Typical power consumption 81.25W

details

Architecture x86-64
Threads 4 threads
L2 cache 4 MB
L2 cache per core 1 MB/core
Manufacture process 32 nm
Transistor count 1,178,000,000
Max CPUs 1
Die size 228 mm²
Voltage range 0.91 - 1.41V

overclocking

Overclocked clock speed 3.41 GHz
Overclocked clock speed (Water) 3 GHz
Overclocked clock speed (Air) 3.41 GHz

integrated graphics

GPU None

memory controller

Memory controller Built-in
Memory type DDR3-1866
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