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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 1 MB 28.5x more l2 cache; more data can be stored in the l2 cache for quick access later
More threads 228 vs 8 220 more threads
More cores 57 vs 4 53 more cores; run more applications at once
Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Front view of Intel Core i7 4790K

Reasons to consider the
Intel Core i7 4790K

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Much higher clock speed 4 GHz vs 1.1 GHz Around 3.8x higher clock speed
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much lower typical power consumption 71.5W vs 243.75W 3.4x lower typical power consumption
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
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 better overclocked clock speed (Air) 4.63 GHz vs 1.1 GHz Around 4.2x better overclocked clock speed (Air)
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Much lower annual home energy cost 21.2 $/year vs 72.27 $/year 3.4x lower annual home energy cost
Much lower annual commercial energy cost 77.09 $/year vs 262.8 $/year 3.4x lower annual commercial energy cost
Much better overclocked clock speed (Water) 4.8 GHz vs 1.1 GHz More than 4.2x better overclocked clock speed (Water)
Newer Apr, 2014 vs Apr, 2013 Release date a year later

Features Key features of the Xeon Phi 3120P  vs Core i7 4790K 

clock speed

L2 cache

overclocked clock speed (air)

Xeon Phi 3120P
1.1 GHz
Core i7 4790K
4.63 GHz

overclocked clock speed (water)

Xeon Phi 3120P
1.1 GHz
Core i7 4790K
4.8 GHz

Specifications Full list of technical specs

summary

Xeon Phi 3120P  vs
Core i7 4790K 
Clock speed 1.1 GHz 4 GHz
Cores 57 cores Quad core
Is unlocked No Yes

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support No Yes
Instruction set extensions
SSE2
F16C
MMX
SSE4
AVX
SSE3
EM64T
SSE
SSE4.1
FMA3
SSE4.2
AES
AVX 2.0
Supports dynamic frequency scaling No Yes

power consumption

TDP 300W 88W
Annual home energy cost 72.27 $/year 21.2 $/year
Annual commercial energy cost 262.8 $/year 77.09 $/year
Typical power consumption 243.75W 71.5W

bus

Architecture FSB DMI 2.0
Number of links 1 0

details

Xeon Phi 3120P  vs
Core i7 4790K 
Architecture x86-64 x86-64
Threads 228 8
L2 cache 28.5 MB 1 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 8 1

overclocking

Overclocked clock speed 1.1 GHz 4.63 GHz
Overclocked clock speed (Water) 1.1 GHz 4.8 GHz
Overclocked clock speed (Air) 1.1 GHz 4.63 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 4600
Number of displays supported N/A 3
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,250 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3L-1600
DDR3-1333
GDDR5
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum memory size 6,144 MB 32,768 MB
Intel Xeon Phi 3120P
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Intel Core i7 4790K
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