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Differences What are the advantages of each

Front view of Intel Celeron D 325J

Reasons to consider the
Intel Celeron D 325J

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
More threads 4 vs 2 Twice as many threads
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Front view of AMD A4 4000

Reasons to consider the
AMD A4 4000

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Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache 1 MB vs 0.25 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly higher clock speed 3 GHz vs 2.53 GHz Around 20% higher clock speed
More advanced architecture x86-64 vs x86 A 64-bit architecture allows more RAM to be installed and accessed by the processor
More cores 2 vs 1 Twice as many cores; run more applications at once
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Significantly lower typical power consumption 52.81W vs 68.25W Around 25% lower typical power consumption
Higher Maximum operating temperature 70 °C vs 67.7 °C Around 5% higher Maximum operating temperature
Newer May, 2013 vs Oct, 2004 Release date over 8 years later
Much better overclocked clock speed (Water) 3.49 GHz vs 2.53 GHz Around 40% better overclocked clock speed (Water)
Significantly lower annual home energy cost 15.66 $/year vs 20.24 $/year Around 25% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 73.58 $/year Around 25% lower annual commercial energy cost

Features Key features of the Celeron D 325J  vs A4 4000 

clock speed

Celeron D 325J
2.53 GHz
A4 4000
3 GHz

turbo clock speed

Celeron D 325J
2.4 GHz
A4 4000
3 GHz

L2 cache

Celeron D 325J
0.25 MB
A4 4000
1 MB

overclocked clock speed (air)

A4 4000
4.02 GHz

overclocked clock speed (water)

Celeron D 325J
2.53 GHz
A4 4000
3.49 GHz

TDP

Specifications Full list of technical specs

summary

Celeron D 325J  vs
A4 4000 
Clock speed 2.53 GHz 3 GHz
Turbo clock speed 2.4 GHz 3 GHz
Cores Single core Dual core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support No Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
ABM
CVT16
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 84W 65W
Annual home energy cost 20.24 $/year 15.66 $/year
Annual commercial energy cost 73.58 $/year 56.94 $/year
Typical power consumption 68.25W 52.81W

details

Celeron D 325J  vs
A4 4000 
Architecture x86 x86-64
Threads 4 2
L2 cache 0.25 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 90 nm 32 nm
Max CPUs 2 1
Voltage range 1.25 - 1.4V 0.8 - 1.45V
Operating temperature Unknown - 67.7°C Unknown - 70°C

overclocking

Overclocked clock speed 4 GHz 4.02 GHz
Overclocked clock speed (Water) 2.53 GHz 3.49 GHz
PassMark (Overclocked) 593.9 1,069.1
Overclocked clock speed (Air) 4 GHz 4.02 GHz

integrated graphics

GPU None GPU
Label N/A Radeon™ HD 7480D
Latest DirectX N/A 11.0
GPU clock speed N/A 720 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR2-1066
DDR3
DDR3-800
DDR2-800
DDR2-667
DDR2
DDR
Intel Celeron D 325J
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AMD A4 4000
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