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Differences What are the advantages of each

Front view of Intel Xeon Phi 7120D

Reasons to consider the
Intel Xeon Phi 7120D

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Much more l2 cache 30.5 MB vs 4 MB Around 7.8x more l2 cache; more data can be stored in the l2 cache for quick access later
More threads 244 vs 2 242 more threads
Significantly newer manufacturing process 22 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
Newer Jan, 2014 vs Jun, 2006 Release date over 7 years later
Front view of Intel Xeon 5120

Reasons to consider the
Intel Xeon 5120

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Much higher clock speed 1.86 GHz vs 1.24 GHz More than 50% higher clock speed
Much lower typical power consumption 52.81W vs 219.38W 4.2x lower typical power consumption
Much better overclocked clock speed (Air) 2.2 GHz vs 1.24 GHz Around 80% better overclocked clock speed (Air)
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much lower annual commercial energy cost 56.94 $/year vs 236.52 $/year 4.2x lower annual commercial energy cost
Much lower annual home energy cost 15.66 $/year vs 65.04 $/year 4.2x lower annual home energy cost
Much better overclocked clock speed (Water) 2.2 GHz vs 1.24 GHz Around 80% better overclocked clock speed (Water)

Features Key features of the Xeon Phi 7120D  vs 5120 

clock speed

Xeon Phi 7120D
1.24 GHz
Xeon 5120
1.86 GHz

L2 cache

Xeon Phi 7120D
30.5 MB
Xeon 5120
4 MB

overclocked clock speed (air)

Xeon Phi 7120D
1.24 GHz
Xeon 5120
2.2 GHz

overclocked clock speed (water)

Xeon Phi 7120D
1.24 GHz
Xeon 5120
2.2 GHz

TDP

Specifications Full list of technical specs

summary

Xeon Phi 7120D  vs
5120 
Clock speed 1.24 GHz 1.86 GHz
Cores 61 cores Dual core
Socket type
PCI Express x24
LGA 771

features

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

power consumption

TDP 270W 65W
Annual home energy cost 65.04 $/year 15.66 $/year
Annual commercial energy cost 236.52 $/year 56.94 $/year
Typical power consumption 219.38W 52.81W

details

Xeon Phi 7120D  vs
5120 
Architecture x86-64 x86-64
Threads 244 2
L2 cache 30.5 MB 4 MB
Manufacture process 22 nm 65 nm
Max CPUs 8 2

overclocking

Overclocked clock speed 1.24 GHz 2.2 GHz
Overclocked clock speed (Water) 1.24 GHz 2.2 GHz
Overclocked clock speed (Air) 1.24 GHz 2.2 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 7120D
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Intel Xeon 5120
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