AMD Athlon II X4 638 

Released February, 2012
  • 2.7 GHz
  • Quad core

Benchmarks Real world tests of the AMD Athlon II X4 638

PassMark Data courtesy Passmark

Athlon II X4 638
3,198
A8 3820
3,152

PassMark (Single Core)

Athlon II X4 638
924
A8 3820
874

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 1.8 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 3.42 GHz
Overclocked clock speed (Water) 2.7 GHz
Overclocked clock speed (Air) 3.42 GHz

integrated graphics

GPU None
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