Ryzen 9 7945HX3D vs A8-3870K

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Aggregate performance score

A8-3870K
2011
4 cores / 4 threads, 100 Watt
1.34
Ryzen 9 7945HX3D
2023
16 cores / 32 threads, 55 Watt
32.72
+2342%

Ryzen 9 7945HX3D outperforms A8-3870K by a whopping 2342% based on our aggregate benchmark results.

Primary details

Comparing processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2388135
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorLaptop
Seriesno dataAMD Dragon Range (Zen 4, Ryzen 7045)
Power efficiency0.5725.14
DesignerAMDAMD
Manufacturerno dataTSMC
Architecture codenameLlano (2011−2012)Dragon Range-HX (Zen 4) (2023−2024)
Release date20 December 2011 (13 years ago)27 July 2023 (2 years ago)

Detailed specifications

A8-3870K and Ryzen 9 7945HX3D 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)16 (Hexadeca-Core)
Threads432
Base clock speed3 GHz2.3 GHz
Boost clock speed3 GHz5.4 GHz
L1 cache128 KB (per core)64 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache0 KB128 MB (shared)
Chip lithography32 nm5 nm
Die size228 mm22x 71 mm2
Maximum core temperatureno data89 °C
Number of transistors1,178 million17,840 million
64 bit support++
Windows 11 compatibility-no data
Unlocked multiplier++

Compatibility

Information on A8-3870K and Ryzen 9 7945HX3D 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
SocketFM1FL1
Power consumption (TDP)100 Watt55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A8-3870K and Ryzen 9 7945HX3D. You'll probably need this information if you require some particular technology.

AES-NI-+
AVX-+
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by A8-3870K and Ryzen 9 7945HX3D are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by A8-3870K and Ryzen 9 7945HX3D. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR5-5200

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon HD 6550DAMD Radeon 610M (400 - 2200 MHz)

Peripherals

Specifications and connection of peripherals supported by A8-3870K and Ryzen 9 7945HX3D.

PCIe versionno data5.0
PCI Express lanesno data28

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.

A8-3870K 1.34
Ryzen 9 7945HX3D 32.72
+2342%

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. Other than that, Passmark measures multi-core performance.

A8-3870K Samples: 609 2355
Ryzen 9 7945HX3D Samples: 153 57490
+2341%

Gaming performance

Pros & cons summary


Performance score 1.34 32.72
Integrated graphics card 0.95 2.63
Recency 20 December 2011 27 July 2023
Physical cores 4 16
Threads 4 32
Chip lithography 32 nm 5 nm
Power consumption (TDP) 100 Watt 55 Watt

Ryzen 9 7945HX3D has a 2341.8% higher aggregate performance score, 176.8% faster integrated GPU, an age advantage of 11 years, 300% more physical cores and 700% more threads, a 540% more advanced lithography process, and 81.8% lower power consumption.

The AMD Ryzen 9 7945HX3D is our recommended choice as it beats the AMD A8-3870K in performance tests.

Note that A8-3870K is a desktop processor while Ryzen 9 7945HX3D is a notebook one.

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AMD A8-3870K
A8-3870K
AMD Ryzen 9 7945HX3D
Ryzen 9 7945HX3D

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Community ratings

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