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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
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
Front view of AMD Athlon II X2 250

Reasons to consider the
AMD Athlon II X2 250

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Much higher clock speed 3 GHz vs 2.1 GHz Around 45% higher clock speed
Much newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better PassMark (Single core) score 1,008 vs 718 More than 40% better PassMark (Single core) score
Much better performance per watt 1.79 pt/W vs 0.94 pt/W More than 90% better performance per watt
Much better overclocked clock speed (Air) 3.72 GHz vs 2.66 GHz Around 40% better overclocked clock speed (Air)
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Significantly higher Maximum operating temperature 74 °C vs 70 °C More than 5% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.04 GHz vs 2.1 GHz More than 90% better overclocked clock speed (Water)
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
Newer Jun, 2009 vs Apr, 2008 Release date over 1 years later

Benchmarks Real world tests of Phenom X3 8450 vs Athlon II X2 250

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 II X2 250
120,700 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 II X2 250 
Clock speed 2.1 GHz 3 GHz
Cores Tri core Dual core
Socket type
AM2+
AM3
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes 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
3DNow!
Supplemental SSE3
AES
TBM
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 1.79 pt/W
Typical power consumption 77.19W 52.81W

bus

Clock speed 1,800 MHz 2,000 MHz

details

Phenom X3 8450  vs
Athlon II X2 250 
Architecture x86-64 x86-64
Threads 3 2
L2 cache 2 MB 2 MB
L2 cache per core 0.67 MB/core 1 MB/core
L3 cache 2 MB 0 MB
L3 cache per core 0.67 MB/core 0 MB/core
Manufacture process 65 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 70°C Unknown - 74°C

overclocking

Overclocked clock speed 2.66 GHz 3.72 GHz
Overclocked clock speed (Water) 2.1 GHz 4.04 GHz
PassMark (Overclocked) 1,903.1 2,374.3
Overclocked clock speed (Air) 2.66 GHz 3.72 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 II X2 250
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