A8-3870K vs FX-8320E

Primary details

Comparing FX-8320E and A8-3870K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1627	2175
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.83	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	3.11	1.39
Architecture codename	Vishera (2012−2015)	Llano (2011−2012)
Release date	2 September 2014 (10 years ago)	20 December 2011 (13 years ago)
Launch price (MSRP)	$147	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

FX-8320E and A8-3870K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	8 (Octa-Core)	4 (Quad-Core)
Threads	8	4
Base clock speed	3.2 GHz	3 GHz
Boost clock speed	4 GHz	3 GHz
L1 cache	no data	128 KB (per core)
L2 cache	8192 KB	1 MB (per core)
L3 cache	no data	0 KB
Chip lithography	32 nm	32 nm
Die size	315 mm2	228 mm2
Maximum core temperature	71 °C	no data
Number of transistors	1,200 million	1,178 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	+
P0 Vcore voltage	Min: 1.075 V - Max: 1.2875 V	no data

Compatibility

Information on FX-8320E and A8-3870K compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	AM3+	FM1
Power consumption (TDP)	95 Watt	100 Watt

Technologies and extensions

Technological solutions and additional instructions supported by FX-8320E and A8-3870K. You'll probably need this information if you require some particular technology.

AES-NI	+	-
FMA	+	-
AVX	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by FX-8320E and A8-3870K are enumerated here.

AMD-V

+

+

Memory specs

Types, maximum amount and channel quantity of RAM supported by FX-8320E and A8-3870K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR3

DDR3

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

On certain motherboards (Chipset feature)

AMD Radeon HD 6550D

Peripherals

Specifications and connection of peripherals supported by FX-8320E and A8-3870K.

PCIe version

n/a

no data

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

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Pros & cons summary

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Performance score	3.12	1.47
Recency	2 September 2014	20 December 2011
Physical cores	8	4
Threads	8	4
Power consumption (TDP)	95 Watt	100 Watt

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Should you still have questions on choice between FX-8320E and A8-3870K, ask them in Comments section, and we shall answer.

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