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Differences What are the advantages of each

Front view of Intel Core i5 3340S

Reasons to consider the
Intel Core i5 3340S

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Much more l3 cache 6 MB vs 0 MB Compared to all cpus, 6 MB l3 cache is just OK
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much more l3 cache per core 1.5 MB/core vs 0 MB/core Compared to all cpus, 1.5 MB/core l3 cache per core is just OK
Much newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Front view of AMD FX 8300

Reasons to consider the
AMD FX 8300

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Much more l2 cache 8 MB vs 1 MB 8x 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 3.3 GHz vs 2.8 GHz Around 20% higher clock speed
Much better overclocked clock speed (Air) 4.61 GHz vs 2.8 GHz Around 65% better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Much better overclocked clock speed (Water) 4.51 GHz vs 2.8 GHz More than 60% better overclocked clock speed (Water)
Higher Maximum operating temperature 70.5 °C vs 69.1 °C Almost the same

Benchmarks Real world tests of Core i5 3340S vs FX 8300

GeekBench 3 (Multi-core) Data courtesy Primate Labs

FX 8300
10,502

GeekBench 3 (Single core) Data courtesy Primate Labs

FX 8300
2,159

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 3340S
2,250 MB/s
FX 8300
2,420,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

FX 8300
9,123

GeekBench

FX 8300
10,686

PassMark Data courtesy Passmark

FX 8300
7,682

PassMark (Single Core)

FX 8300
1,396

Specifications Full list of technical specs

summary

Core i5 3340S  vs
FX 8300 
Clock speed 2.8 GHz 3.3 GHz
Turbo clock speed 3.3 GHz 4.2 GHz
Cores Quad core Octa core
Socket type
LGA 1155
AM3+
Is unlocked No Yes

features

Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
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 65W 95W
Annual home energy cost 15.66 $/year 22.89 $/year
Annual commercial energy cost 56.94 $/year 83.22 $/year
Performance per watt 2.78 pt/W 10.58 pt/W
Typical power consumption 52.81W 77.19W

details

Core i5 3340S  vs
FX 8300 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 1 MB 8 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 6 MB 0 MB
L3 cache per core 1.5 MB/core 0 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1
Clock multiplier 28 21
Operating temperature Unknown - 69.1°C Unknown - 70.5°C

overclocking

Overclocked clock speed 2.8 GHz 4.61 GHz
Overclocked clock speed (Water) 2.8 GHz 4.51 GHz
Overclocked clock speed (Air) 2.8 GHz 4.61 GHz

integrated graphics

GPU GPU None
Label HD 2500 N/A
Number of displays supported 3 N/A
GPU clock speed 650 MHz N/A
Turbo clock speed 1,050 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
DDR3-1333
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 25,600 MB/s 29,866.66 MB/s
Intel Core i5 3340S
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AMD FX 8300
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