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Differences What are the advantages of each

Front view of Intel Xeon E7-4870 v2

Reasons to consider the
Intel Xeon E7-4870 v2

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Much more l3 cache 30 MB vs 8 MB 3.8x more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
More threads 30 vs 8 22 more threads
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 15 vs 8 7 more cores; run more applications at once
Significantly more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Higher Maximum operating temperature 73 °C vs 61.1 °C Around 20% higher Maximum operating temperature
Newer Feb, 2014 vs Oct, 2012 Release date over 1 years later
Front view of AMD FX 8320

Reasons to consider the
AMD FX 8320

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Much more l2 cache 8 MB vs 3.5 MB More than 2.2x more l2 cache; more data can be stored in the l2 cache for quick access later
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly higher clock speed 3.5 GHz vs 2.3 GHz More than 50% higher clock speed
Significantly higher turbo clock speed 4 GHz vs 2.9 GHz Around 40% higher turbo clock speed
Much more l2 cache per core 1 MB/core vs 0.23 MB/core More than 4.2x more l2 cache per core
Slightly lower typical power consumption 101.56W vs 105.63W Around 5% lower typical power consumption
Slightly lower annual home energy cost 30.11 $/year vs 31.32 $/year Around 5% lower annual home energy cost
Slightly lower annual commercial energy cost 109.5 $/year vs 113.88 $/year Around 5% lower annual commercial energy cost

Features Key features of the Xeon E7-4870 v2  vs FX 8320 

clock speed

Xeon E7-4870 v2
2.3 GHz
FX 8320
3.5 GHz

turbo clock speed

Xeon E7-4870 v2
2.9 GHz
FX 8320
4 GHz

L2 cache

FX 8320
8 MB

L3 cache

TDP

Specifications Full list of technical specs

summary

Xeon E7-4870 v2  vs
FX 8320 
Clock speed 2.3 GHz 3.5 GHz
Turbo clock speed 2.9 GHz 4 GHz
Cores Pentadeca core Octa core
Socket type
LGA 2011
AM3+
Is unlocked No Yes

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 130W 125W
Annual home energy cost 31.32 $/year 30.11 $/year
Annual commercial energy cost 113.88 $/year 109.5 $/year
Typical power consumption 105.63W 101.56W

bus

Clock speed 4,000 MHz 2,600 MHz

details

Xeon E7-4870 v2  vs
FX 8320 
Architecture x86-64 x86-64
Threads 30 8
L2 cache 3.5 MB 8 MB
L2 cache per core 0.23 MB/core 1 MB/core
L3 cache 30 MB 8 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 4 1
Clock multiplier 23 20
Operating temperature Unknown - 73°C Unknown - 61.1°C

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
DDR3-1866
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
Channels Quad Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 51,200 MB/s 29,866.66 MB/s
Intel Xeon E7-4870 v2
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AMD FX 8320
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