CPUBoss Review Our evaluation of E5-2420 vs 8300 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

FX 8300
n.d.
FX 6300
n.d.
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

FX 8300
n.d.
FX 6300
9.9
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

No winner declared

Too close to call

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VS

Intel Xeon E5-2420

CPUBoss Winner
Front view of Intel Xeon E5-2420

Differences What are the advantages of each

Front view of Intel Xeon E5-2420

Reasons to consider the
Intel Xeon E5-2420

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More l3 cache 15 MB vs 8 MB Around 90% more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l3 cache per core 2.5 MB/core vs 1 MB/core 2.5x more l3 cache per core
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More threads 12 vs 8 4 more threads
Front view of AMD FX 8300

Reasons to consider the
AMD FX 8300

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Much more l2 cache 8 MB vs 2 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher turbo clock speed 4.2 GHz vs 2.4 GHz More than 75% higher turbo clock speed
Much higher clock speed 3.3 GHz vs 1.9 GHz Around 75% higher clock speed
Much better overclocked clock speed (Air) 4.61 GHz vs 2.36 GHz More than 95% better overclocked clock speed (Air)
Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Much better performance per watt 10.58 pt/W vs 5.47 pt/W Around 95% better performance per watt
More cores 8 vs 6 2 more cores; run more applications at once
Better geekbench 3 single core score 2,159 vs 1,754 Around 25% better geekbench 3 single core score
Much better overclocked clock speed (Water) 4.51 GHz vs 1.9 GHz More than 2.2x better overclocked clock speed (Water)
Newer Dec, 2012 vs May, 2012 Release date 7 months later

Benchmarks Real world tests of Xeon E5-2420 vs FX 8300

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon E5-2420
10,344
FX 8300
10,502

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon E5-2420
1,754
FX 8300
2,159

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E5-2420
985,150 MB/s
FX 8300
2,420,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Xeon E5-2420
9,662
FX 8300
9,123

GeekBench

Xeon E5-2420
9,662
FX 8300
10,686

PassMark Data courtesy Passmark

Xeon E5-2420
8,570
FX 8300
7,682

PassMark (Single Core)

Xeon E5-2420
1,355
FX 8300
1,396

Specifications Full list of technical specs

summary

Xeon E5-2420  vs
FX 8300 
Clock speed 1.9 GHz 3.3 GHz
Turbo clock speed 2.4 GHz 4.2 GHz
Cores Hexa core Octa core
Is unlocked Yes 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 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 5.47 pt/W 10.58 pt/W
Typical power consumption 77.19W 77.19W

details

Xeon E5-2420  vs
FX 8300 
Architecture x86-64 x86-64
Threads 12 8
L2 cache 2 MB 8 MB
L2 cache per core 0.33 MB/core 1 MB/core
L3 cache 15 MB 8 MB
L3 cache per core 2.5 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 1
Voltage range 0.6 - 1.35V 0.82 - 1.43V

overclocking

Overclocked clock speed 2.36 GHz 4.61 GHz
Overclocked clock speed (Water) 1.9 GHz 4.51 GHz
Overclocked clock speed (Air) 2.36 GHz 4.61 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
DDR3-1866
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Triple Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 29,866.66 MB/s
Intel Xeon E5-2420
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AMD FX 8300
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