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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 28.5 MB More than 5% more l2 cache; more data can be stored in the l2 cache for quick access later
More threads 244 vs 228 16 more threads
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
Higher clock speed 1.24 GHz vs 1.1 GHz Around 15% higher clock speed
Significantly lower typical power consumption 219.38W vs 243.75W 10% lower typical power consumption
Better overclocked clock speed (Air) 1.24 GHz vs 1.1 GHz Around 15% better overclocked clock speed (Air)
Significantly lower annual commercial energy cost 236.52 $/year vs 262.8 $/year 10% lower annual commercial energy cost
Significantly lower annual home energy cost 65.04 $/year vs 72.27 $/year Around 10% lower annual home energy cost
Better overclocked clock speed (Water) 1.24 GHz vs 1.1 GHz Around 15% better overclocked clock speed (Water)
Newer Jan, 2014 vs Apr, 2013 Release date 10 months later
Front view of Intel Xeon Phi 3120A

Reasons to consider the
Intel Xeon Phi 3120A

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CPUBoss is not aware of any important advantages of the Xeon Phi 3120A vs the Xeon Phi 7120D.

Features Key features of the Xeon Phi 7120D  vs 3120A 

clock speed

Xeon Phi 7120D
1.24 GHz
Xeon Phi 3120A
1.1 GHz

L2 cache

Xeon Phi 7120D
30.5 MB
Xeon Phi 3120A
28.5 MB

overclocked clock speed (air)

Xeon Phi 7120D
1.24 GHz
Xeon Phi 3120A
1.1 GHz

overclocked clock speed (water)

Xeon Phi 7120D
1.24 GHz
Xeon Phi 3120A
1.1 GHz

Specifications Full list of technical specs

summary

Xeon Phi 7120D  vs
3120A 
Clock speed 1.24 GHz 1.1 GHz
Cores 61 cores 57 cores
Socket type
PCI Express x24
PCI Express x16
Is unlocked No No

features

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

power consumption

TDP 270W 300W
Annual home energy cost 65.04 $/year 72.27 $/year
Annual commercial energy cost 236.52 $/year 262.8 $/year
Typical power consumption 219.38W 243.75W

details

Xeon Phi 7120D  vs
3120A 
Architecture x86-64 x86-64
Threads 244 228
L2 cache 30.5 MB 28.5 MB
Manufacture process 22 nm 22 nm
Max CPUs 8 8

overclocking

Overclocked clock speed 1.24 GHz 1.1 GHz
Overclocked clock speed (Water) 1.24 GHz 1.1 GHz
Overclocked clock speed (Air) 1.24 GHz 1.1 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

memory controller

Memory controller Built-in Built-in
Memory type
GDDR5
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Intel Xeon Phi 7120D
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Intel Xeon Phi 3120A
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