AMD Athlon II X4 638 

Released February, 2012
  • 2.7 GHz
  • Quad core
5 Out of 10

CPUBoss Review Our evaluation of the AMD Athlon II X4 638 among desktop CPUs (45 to 75W)

Performance

Benchmark performance using all cores

Athlon II X4 638
6.0
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Athlon II X4 638
5.4
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Athlon II X4 638
0.0
Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Athlon II X4 638
0.0
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Athlon II X4 638
5.0
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Athlon II X4 638
n.d.
Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

5

CPUBoss Score

Combination of all six facets

Athlon II X4 638
5.0

Benchmarks Real world tests of the AMD Athlon II X4 638

PassMark Data courtesy Passmark

Athlon II X4 638
3,275
Core i3 4330
5,061

PassMark (Single Core)

Athlon II X4 638
921
Core i3 4330
2,027

Specifications Full list of technical specs

summary

Clock speed 2.7 GHz
Turbo clock speed 0 GHz
Cores Quad core
Socket type FM1
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

power consumption

TDP 65W
Annual home energy cost 15.66 $/year
Annual commercial energy cost 56.94 $/year
Performance per watt 2.24 pt/W
Typical power consumption 52.81W

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 0 MB
L3 cache per core 0 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
Operating temperature Unknown - 70.1°C

overclocking

Overclocked clock speed 3.4 GHz
Overclocked clock speed (Water) 2.7 GHz
Overclocked clock speed (Air) 3.4 GHz

integrated graphics

GPU None
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