Cast your vote Do you agree or disagree with CPUBoss?

Thanks for adding your opinion. Follow us on Facebook to stay up to date with the latest news!
VS

Differences What are the advantages of each

Front view of AMD Athlon II X4 651K

Reasons to consider the
AMD Athlon II X4 651K

Report a correction
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Front view of AMD Athlon II X4 631

Reasons to consider the
AMD Athlon II X4 631

Report a correction
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required

Features Key features of the Athlon II X4 651K  vs 631 

clock speed

L2 cache

overclocked clock speed (air)

overclocked clock speed (water)

Specifications Full list of technical specs

summary

Athlon II X4 651K  vs
631 
Clock speed 3 GHz 2.6 GHz
Turbo clock speed None 0 GHz
Cores Quad core Dual core
Socket type
FM1
Is unlocked Yes No

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 24.09 $/year
Annual commercial energy cost 87.6 $/year 87.6 $/year
Typical power consumption 81.25W 81.25W

details

Athlon II X4 651K  vs
631 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 4 MB 4 MB
L2 cache per core 1 MB/core 2 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

Overclock popularity 1 5
Overclocked clock speed 3.43 GHz 4.03 GHz
Overclocked clock speed (Water) 3.49 GHz 2.6 GHz
Overclocked clock speed (Air) 3.43 GHz 4.03 GHz

integrated graphics

GPU None GPU
Label N/A AMD Radeon Aug 15, 2011

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
AMD Athlon II X4 651K
Report a correction
AMD Athlon II X4 631
Report a correction

Comments

comments powered by Disqus