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Differences What are the advantages of each

Front view of Samsung Exynos 5 Octa

Reasons to consider the
Samsung Exynos 5 Octa

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Much newer manufacturing process 28 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
More cores 8 vs 4 Twice as many cores; run more applications at once
More threads 8 vs 4 Twice as many threads
Front view of Intel Xeon E7420

Reasons to consider the
Intel Xeon E7420

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Much more l2 cache 8 MB vs 0.5 MB 16x more l2 cache; more data can be stored in the l2 cache for quick access later
More advanced architecture x86-64 vs ARM A 64-bit architecture allows more RAM to be installed and accessed by the processor
Higher clock speed 2.13 GHz vs 1.6 GHz Around 35% higher clock speed
Much more l2 cache per core 2 MB/core vs 0.06 MB/core 32x more l2 cache per core
Better overclocked clock speed (Air) 2.13 GHz vs 1.92 GHz More than 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 2.13 GHz vs 1.9 GHz More than 10% better overclocked clock speed (Water)

Features Key features of the Exynos 5 Octa  vs Xeon E7420 

clock speed

Exynos 5 Octa
1.6 GHz
Xeon E7420
2.13 GHz

L2 cache

overclocked clock speed (air)

Exynos 5 Octa
1.92 GHz
Xeon E7420
2.13 GHz

overclocked clock speed (water)

Exynos 5 Octa
1.9 GHz
Xeon E7420
2.13 GHz

Specifications Full list of technical specs

summary

Exynos 5 Octa  vs
Xeon E7420 
Clock speed 1.6 GHz 2.13 GHz
Cores Octa core Quad core

overclocking

Overclocked clock speed 1.92 GHz 2.13 GHz
Overclocked clock speed (Water) 1.9 GHz 2.13 GHz
Overclocked clock speed (Air) 1.92 GHz 2.13 GHz

power consumption

Typical power consumption N/A 73.13W

details

Exynos 5 Octa  vs
Xeon E7420 
Architecture ARM x86-64
Threads 8 4
L2 cache 0.5 MB 8 MB
L2 cache per core 0.06 MB/core 2 MB/core
Manufacture process 28 nm 45 nm

integrated graphics

GPU GPU None
Latest DirectX 11.x N/A
GPU clock speed 528 MHz N/A
Samsung Exynos 5 Octa
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Intel Xeon E7420
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