A4-4020 vs A9-9420

Place in the ranking	2521	2620
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	AMD Bristol Ridge	no data
Power efficiency	5.90	1.16
Architecture codename	Stoney Ridge (2016−2019)	Richland (2013−2014)
Release date	31 May 2016 (8 years ago)	January 2014 (10 years ago)

Detailed specifications

A9-9420 and A4-4020 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	2 (Dual-core)	2 (Dual-core)
Threads	2	2
Base clock speed	3 GHz	3.2 GHz
Boost clock speed	3.6 GHz	3.4 GHz
L1 cache	160 KB	96K
L2 cache	1 MB (shared)	1 MB (shared)
L3 cache	0 KB	no data
Chip lithography	28 nm	32 nm
Die size	125 mm²	246 mm²
Maximum core temperature	90 °C	no data
Maximum case temperature (TCase)	74 °C	70 °C
Number of transistors	1,200 million	1,303 million
64 bit support	+	+
Windows 11 compatibility	-	no data

Compatibility

Information on A9-9420 and A4-4020 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	FT4	FM2
Power consumption (TDP)	15 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A9-9420 and A4-4020. You'll probably need this information if you require some particular technology.

Instruction set extensions	Virtualization,	no data
AES-NI	+	+
FMA	+	+
AVX	+	+
PowerNow	-	+

Virtualization technologies

Virtual machine speed-up technologies supported by A9-9420 and A4-4020 are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by A9-9420 and A4-4020. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR4

DDR3-1333

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

Radeon R5

AMD Radeon HD 7480D

Peripherals

Specifications and connection of peripherals supported by A9-9420 and A4-4020.

PCIe version	3.0	2.0
PCI Express lanes	8	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.

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.

A9-9420 0.94
+17.5%

A4-4020 0.80

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

A9-9420 1501
+18.4%

A4-4020 1268

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

A9-9420 325

A4-4020 336
+3.4%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

A9-9420 500
+14.2%

A4-4020 438