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Differences What are the advantages of each

Front view of AMD Phenom X3 8450

Reasons to consider the
AMD Phenom X3 8450

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Much more l3 cache 2 MB vs 0 MB Compared to all cpus, 2 MB l3 cache is just OK
Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better PassMark score 1,887 vs 1,041 More than 80% better PassMark score
Much better geekbench 2 (32-bit) score 2,641 vs 1,515 Around 75% better geekbench 2 (32-bit) score
More cores 3 vs 2 1 more cores; run more applications at once
More threads 3 vs 2 1 more threads
Much more l3 cache per core 0.67 MB/core vs 0 MB/core Compared to all cpus, 0.67 MB/core l3 cache per core is just OK
Much higher Maximum operating temperature 70 °C vs 55 °C More than 25% higher Maximum operating temperature
Much more l2 cache per core 0.67 MB/core vs 0.5 MB/core Around 35% more l2 cache per core
Newer Apr, 2008 vs May, 2006 Release date over 1 years later
Front view of AMD Athlon X2 4000+

Reasons to consider the
AMD Athlon X2 4000+

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Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Much better overclocked clock speed (Water) 3.24 GHz vs 2.1 GHz Around 55% better overclocked clock speed (Water)
Better overclocked clock speed (Air) 2.77 GHz vs 2.66 GHz Around 5% better overclocked clock speed (Air)
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost

Benchmarks Real world tests of Phenom X3 8450 vs Athlon X2 4000+

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Phenom X3 8450
80,100 MB/s
Athlon X2 4000+
62.3 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Phenom X3 8450  vs
Athlon X2 4000+ 
Clock speed 2.1 GHz 2.1 GHz
Cores Tri core Dual core
Socket type
AM2+
AM2
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Performance per watt 0.94 pt/W 0.73 pt/W
Typical power consumption 77.19W 52.81W

details

Phenom X3 8450  vs
Athlon X2 4000+ 
Architecture x86-64 x86-64
Threads 3 2
L2 cache 2 MB 1 MB
L2 cache per core 0.67 MB/core 0.5 MB/core
L3 cache 2 MB 0 MB
L3 cache per core 0.67 MB/core 0 MB/core
Manufacture process 65 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 70°C Unknown - 55°C

overclocking

Overclocked clock speed 2.66 GHz 2.77 GHz
Overclocked clock speed (Water) 2.1 GHz 3.24 GHz
PassMark (Overclocked) 1,903.1 466.1
Overclocked clock speed (Air) 2.66 GHz 2.77 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A
AMD Phenom X3 8450
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AMD Athlon X2 4000+
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