A9-9420 vs A10-7870K

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Aggregate performance score

A10-7870K
2015
4 cores / 4 threads, 95 Watt
2.19
+133%
A9-9420
2016
2 cores / 2 threads, 15 Watt
0.94

A10-7870K outperforms A9-9420 by a whopping 133% based on our aggregate benchmark results.

Primary details

Comparing A10-7870K and A9-9420 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking18522523
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.49no data
Market segmentDesktop processorLaptop
Seriesno dataAMD Bristol Ridge
Power efficiency2.185.93
Architecture codenameGodaveri (2014−2016)Stoney Ridge (2016−2019)
Release date28 May 2015 (9 years ago)31 May 2016 (8 years ago)
Launch price (MSRP)$120no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

A10-7870K and A9-9420 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 cores4 (Quad-Core)2 (Dual-core)
Threads42
Base clock speed3.9 GHz3 GHz
Boost clock speed4.1 GHz3.6 GHz
L1 cache256 KB160 KB
L2 cache4096 KB1 MB (shared)
L3 cache0 KB0 KB
Chip lithography28 nm28 nm
Die size246 mm2125 mm2
Maximum core temperature72 °C90 °C
Maximum case temperature (TCase)74 °C74 °C
Number of transistors1,178 million1,200 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on A10-7870K and A9-9420 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 configuration11
SocketFM2+FT4
Power consumption (TDP)95 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A10-7870K and A9-9420. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataVirtualization,
AES-NI++
FMAFMA4+
AVXAVX+
FRTC+-
FreeSync+-
PowerTune+-
DualGraphics+-
TrueAudio+-
PowerNow+-
PowerGating+-
Out-of-band client management+-
VirusProtect+-
HSA+-

Virtualization technologies

Virtual machine speed-up technologies supported by A10-7870K and A9-9420 are enumerated here.

AMD-V++
IOMMU 2.0+-

Memory specs

Types, maximum amount and channel quantity of RAM supported by A10-7870K and A9-9420. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3-2133DDR4
Max memory channels2no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon R7 GraphicsRadeon R5
iGPU core count8no data
จำนวนพาธไลน์512no data
Enduro+-
Switchable graphics+-
UVD+-
VCE+-

Graphics interfaces

Available interfaces and connections of A10-7870K and A9-9420 integrated GPUs.

DisplayPort+-
HDMI+-

Graphics API support

APIs supported by A10-7870K and A9-9420 integrated GPUs, sometimes API versions are included.

DirectXDirectX® 12no data
Vulkan+-

Peripherals

Specifications and connection of peripherals supported by A10-7870K and A9-9420.

PCIe version3.03.0
PCI Express lanesno data8

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.

A10-7870K 2.19
+133%
A9-9420 0.94

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.

A10-7870K 3471
+131%
A9-9420 1500

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.

A10-7870K 475
+46.2%
A9-9420 325

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.

A10-7870K 1218
+144%
A9-9420 500

Gaming performance

Pros & cons summary


Performance score 2.19 0.94
Recency 28 May 2015 31 May 2016
Physical cores 4 2
Threads 4 2
Power consumption (TDP) 95 Watt 15 Watt

A10-7870K has a 133% higher aggregate performance score, and 100% more physical cores and 100% more threads.

A9-9420, on the other hand, has an age advantage of 1 year, and 533.3% lower power consumption.

The A10-7870K is our recommended choice as it beats the A9-9420 in performance tests.

Note that A10-7870K is a desktop processor while A9-9420 is a notebook one.


Should you still have questions on choice between A10-7870K and A9-9420, ask them in Comments section, and we shall answer.

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AMD A10-7870K
A10-7870K
AMD A9-9420
A9-9420

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Community ratings

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Questions & comments

Here you can ask a question about A10-7870K or A9-9420, agree or disagree with our judgements, or report an error or mismatch.