AMD Athlon II X4 651 vs A8 3870K

	Performance
	Benchmark performance using all cores
Athlon II X4 651 2.4 A8 3870K 2.6 Athlon II X4 651K n.d.
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

	Single-core Performance
	Individual core benchmark performance
Athlon II X4 651 0.0 A8 3870K 0.0 Athlon II X4 651K n.d.
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 1.4 Athlon II X4 651K 0.0
Fire Strike

	Integrated Graphics (OpenCL)
	Integrated GPU performance for parallel computing
Athlon II X4 651 0.0 A8 3870K 0.4 Athlon II X4 651K 0.0
CompuBench 1.5 Bitcoin mining and 4 more

	Performance per Watt
	How efficiently does the processor use electricity?
Athlon II X4 651 3.1 A8 3870K 3.6 Athlon II X4 651K n.d.
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. Athlon II X4 651K n.d.
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

2.7	CPUBoss Score
	Combination of all six facets
Athlon II X4 651 2.2 A8 3870K 2.7 Athlon II X4 651K n.d.

Winner
AMD Athlon II X4 651

CPUBoss recommends the AMD Athlon II X4 651 based on its .

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AMD Athlon II X4 651

Front view of AMD A8 3870K

AMD A8 3870K

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Front view of AMD Athlon II X4 651

Reasons to consider the
AMD Athlon II X4 651

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CPUBoss is not aware of any important advantages of the Athlon II X4 651 vs the A8 3870K.

Front view of AMD A8 3870K

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AMD A8 3870K

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Has a built-in GPU

Yes

vs

No

Somewhat common; A separate graphics adapter is not required

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Athlon II X4 651

5,570

5,602

GeekBench 3 (Single core) Data courtesy Primate Labs

Athlon II X4 651

1,558

1,597

GeekBench 3 (AES single core) Data courtesy Primate Labs

Athlon II X4 651

125,700 MB/s

126,200 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Athlon II X4 651

5,328

5,339

GeekBench

Athlon II X4 651

5,328

7,554

3D Mark 11 (Physics)

Athlon II X4 651

2,890

1,102

PassMark Data courtesy Passmark

Athlon II X4 651

3,569

3,596

PassMark (Single Core)

Athlon II X4 651

1,049

1,032

summary	Athlon II X4 651	vs	A8 3870K
Clock speed	3 GHz		3 GHz
Cores	Quad core		Quad core
Socket type
FM1
features
Has a NX bit	Yes		Yes
Has virtualization support	Yes		Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
AMD64
AMD-V
3DNow!
Supports dynamic frequency scaling	Yes		Yes
power consumption
TDP	100W		100W
Annual home energy cost	24.09 $/year		40.03 $/year
Annual commercial energy cost	87.6 $/year		138.41 $/year
Performance per watt	1.51 pt/W		1.03 pt/W
Typical power consumption	81.25W		N/A

details	Athlon II X4 651	vs	A8 3870K
Architecture	x86-64		x86-64
Threads	4		4
L2 cache	4 MB		4 MB
L2 cache per core	1 MB/core		1 MB/core
Manufacture process	32 nm		32 nm
Transistor count	1,178,000,000		1,178,000,000
Max CPUs	1		1
Die size	228 mm²		228 mm²
Voltage range	0.91 - 1.41V		0.45 - 1.41V
overclocking
Overclocked clock speed	3.41 GHz		3.56 GHz
Overclocked clock speed (Water)	3 GHz		3.67 GHz
Overclocked clock speed (Air)	3.41 GHz		3.56 GHz
integrated graphics
GPU	None		GPU
Label	N/A		Radeon™ HD 6550D
Latest DirectX	N/A		11.0
Number of displays supported	N/A		2
GPU clock speed	N/A		600 MHz
Turbo clock speed	N/A		600 MHz
memory controller
Memory controller	Built-in		Built-in
Memory type
DDR3-1866
DDR3-1600
DDR3-1333

AMD Athlon II X4 651

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AMD A8 3870K

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AMD Athlon II X4 651 vs Intel Core i3 2100

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AMD A8 3870K vs Athlon II X4 651K

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