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Differences What are the advantages of each

Front view of Intel Xeon Phi 3120P

Reasons to consider the
Intel Xeon Phi 3120P

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Much more l2 cache 28.5 MB vs 0 MB Compared to all cpus, 28.5 MB l2 cache is just OK
More threads 228 vs 1 227 more threads
Much newer manufacturing process 22 nm vs 130 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 57 vs 1 56 more cores; run more applications at once
Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Newer Apr, 2013 vs Jul, 2004 Release date over 8 years later
Much more l2 cache per core 0.5 MB/core vs 0 MB/core Compared to all cpus, 0.5 MB/core l2 cache per core is just OK
Front view of AMD Sempron 3100+

Reasons to consider the
AMD Sempron 3100+

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Much lower typical power consumption 50.38W vs 243.75W 4.8x lower typical power consumption
Higher clock speed 1.8 GHz vs 1.1 GHz Around 65% higher clock speed
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Much lower annual home energy cost 14.94 $/year vs 72.27 $/year 4.8x lower annual home energy cost
Much lower annual commercial energy cost 54.31 $/year vs 262.8 $/year 4.8x lower annual commercial energy cost
Significantly better overclocked clock speed (Air) 2.06 GHz vs 1.1 GHz More than 85% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 1.8 GHz vs 1.1 GHz Around 65% better overclocked clock speed (Water)

Features Key features of the Xeon Phi 3120P  vs Sempron 3100+ 

clock speed

Xeon Phi 3120P
1.1 GHz
Sempron 3100+
1.8 GHz

L2 cache

overclocked clock speed (air)

Xeon Phi 3120P
1.1 GHz
Sempron 3100+
2.06 GHz

overclocked clock speed (water)

Xeon Phi 3120P
1.1 GHz
Sempron 3100+
1.8 GHz

Specifications Full list of technical specs

summary

Xeon Phi 3120P  vs
Sempron 3100+ 
Clock speed 1.1 GHz 1.8 GHz
Cores 57 cores Single core
Socket type
PCI Express x16
754
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support No No
Instruction set extensions
SSE2
MMX
SSE3
SSE
FMA3
3DNow!
Supports dynamic frequency scaling No Yes

power consumption

TDP 300W 62W
Annual home energy cost 72.27 $/year 14.94 $/year
Annual commercial energy cost 262.8 $/year 54.31 $/year
Typical power consumption 243.75W 50.38W

details

Xeon Phi 3120P  vs
Sempron 3100+ 
Architecture x86-64 x86-64
Threads 228 1
L2 cache 28.5 MB 0 MB
L2 cache per core 0.5 MB/core 0 MB/core
Manufacture process 22 nm 130 nm
Max CPUs 8 1

overclocking

Overclocked clock speed 1.1 GHz 2.06 GHz
Overclocked clock speed (Water) 1.1 GHz 1.8 GHz
Overclocked clock speed (Air) 1.1 GHz 2.06 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
Intel Xeon Phi 3120P
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AMD Sempron 3100+
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