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Differences What are the advantages of each

Front view of AMD Sempron 145

Reasons to consider the
AMD Sempron 145

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Much higher clock speed 2.8 GHz vs 2.1 GHz Around 35% higher clock speed
Much better PassMark (Single core) score 882 vs 714 Around 25% better PassMark (Single core) score
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Air) 4.05 GHz vs 2.46 GHz Around 65% better overclocked clock speed (Air)
Much better performance per watt 2.06 pt/W vs 0.91 pt/W More than 2.2x better performance per watt
Much lower typical power consumption 36.56W vs 77.19W 2.1x lower typical power consumption
Much better overclocked clock speed (Water) 4.28 GHz vs 2.75 GHz More than 55% better overclocked clock speed (Water)
Much lower annual commercial energy cost 39.42 $/year vs 83.22 $/year 2.1x lower annual commercial energy cost
Much lower annual home energy cost 10.84 $/year vs 22.89 $/year 2.1x lower annual home energy cost
Newer May, 2010 vs Mar, 2008 Release date over 2 years later
Front view of AMD Phenom X3 8400

Reasons to consider the
AMD Phenom X3 8400

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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
More cores 3 vs 1 Three times as many cores; run more applications at once
More threads 3 vs 1 Three times as many threads
Much better PassMark score 1,646 vs 800 More than 2x better PassMark score
Much better geekbench 2 (32-bit) score 2,605 vs 1,332 More than 95% better geekbench 2 (32-bit) score
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 63 °C More than 10% higher Maximum operating temperature

Benchmarks Real world tests of Sempron 145 vs Phenom X3 8400

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

Sempron 145
111,900 MB/s
Phenom X3 8400
79,150 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Sempron 145  vs
Phenom X3 8400 
Clock speed 2.8 GHz 2.1 GHz
Cores Single core Tri core
Socket type
AM3
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 45W 95W
Annual home energy cost 10.84 $/year 22.89 $/year
Annual commercial energy cost 39.42 $/year 83.22 $/year
Performance per watt 2.06 pt/W 0.91 pt/W
Typical power consumption 36.56W 77.19W

bus

Clock speed 2,000 MHz 1,800 MHz

details

Sempron 145  vs
Phenom X3 8400 
Architecture x86-64 x86-64
Threads 1 3
L2 cache 1 MB 2 MB
L2 cache per core 1 MB/core 0.67 MB/core
L3 cache 0 MB 2 MB
L3 cache per core 0 MB/core 0.67 MB/core
Manufacture process 45 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 63°C Unknown - 70°C

overclocking

Overclocked clock speed 4.05 GHz 2.46 GHz
Overclocked clock speed (Water) 4.28 GHz 2.75 GHz
PassMark (Overclocked) 1,763.8 1,700.9
Overclocked clock speed (Air) 4.05 GHz 2.46 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 Sempron 145
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AMD Phenom X3 8400
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