Ryzen 7 7840U vs A8-7650K

VS

Aggregate performance score

A8-7650K
2015
4 cores / 4 threads, 95 Watt
1.97
Ryzen 7 7840U
2023
8 cores / 16 threads, 28 Watt
15.71
+697%

Ryzen 7 7840U outperforms A8-7650K by a whopping 697% based on our aggregate benchmark results.

Primary details

Comparing A8-7650K and Ryzen 7 7840U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1944435
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.31no data
Market segmentDesktop processorLaptop
SeriesAMD A-Series (Desktop)AMD Phoenix (Zen 4, Ryzen 7040)
Power efficiency1.9653.10
Architecture codenameKaveri (2014−2015)Phoenix-U (Zen 4) (2023)
Release date7 January 2015 (9 years ago)May 2023 (1 year ago)
Launch price (MSRP)$152no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

A8-7650K and Ryzen 7 7840U 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)8 (Octa-Core)
Threads416
Base clock speed3.3 GHz3.3 GHz
Boost clock speed3.8 GHz5.1 GHz
L1 cache256 KB64K (per core)
L2 cache4096 KB1 MB (per core)
L3 cacheno data16 MB (shared)
Chip lithography28 nm4 nm
Die size245 mm2178 mm2
Maximum core temperature72 °C100 °C
Number of transistors2,411 million25,000 million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier+-

Compatibility

Information on A8-7650K and Ryzen 7 7840U 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+FP8
Power consumption (TDP)95 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by A8-7650K and Ryzen 7 7840U. You'll probably need this information if you require some particular technology.

Instruction set extensionsSSE1-4a, AVX, AES, FMA4, VTno data
AES-NI++
FMA+-
AVX++
FRTC+-
FreeSync+-
DualGraphics+-
TrueAudio+-
PowerNow+-
PowerGating+-
Out-of-band client management+-
VirusProtect+-
HSA+-
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by A8-7650K and Ryzen 7 7840U are enumerated here.

AMD-V++
IOMMU 2.0+-

Memory specs

Types, maximum amount and channel quantity of RAM supported by A8-7650K and Ryzen 7 7840U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3-2133DDR5-5600
Max memory channels2no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon R7 GraphicsAMD Radeon 780M ( - 2700 MHz)
iGPU core count6no data
จำนวนพาธไลน์384no data
Enduro+-
Switchable graphics+-
UVD+-
VCE+-

Graphics interfaces

Available interfaces and connections of A8-7650K and Ryzen 7 7840U integrated GPUs.

DisplayPort+-
HDMI+-

Graphics API support

APIs supported by A8-7650K and Ryzen 7 7840U integrated GPUs, sometimes API versions are included.

DirectXDirectX® 12no data
Vulkan+-

Peripherals

Specifications and connection of peripherals supported by A8-7650K and Ryzen 7 7840U.

PCIe version3.04.0
PCI Express lanes1620

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.

A8-7650K 1.97
Ryzen 7 7840U 15.71
+697%

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.

A8-7650K 3132
Ryzen 7 7840U 24956
+697%

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.

A8-7650K 420
Ryzen 7 7840U 2081
+395%

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.

A8-7650K 1046
Ryzen 7 7840U 8744
+736%

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

A8-7650K 2904
Ryzen 7 7840U 6669
+130%

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

A8-7650K 9456
Ryzen 7 7840U 38490
+307%

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

A8-7650K 4410
Ryzen 7 7840U 12482
+183%

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

A8-7650K 14.2
Ryzen 7 7840U 3.51
+305%

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

A8-7650K 3
Ryzen 7 7840U 23
+576%

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

A8-7650K 296
Ryzen 7 7840U 1990
+572%

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

A8-7650K 84
Ryzen 7 7840U 264
+214%

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

A8-7650K 0.96
Ryzen 7 7840U 2.79
+191%

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

A8-7650K 2
Ryzen 7 7840U 8.5
+323%

WinRAR 4.0

WinRAR 4.0 is an outdated version of a popular file archiver. It contains an internal speed test, using 'Best' setting of RAR compression on large chunks of randomly generated data. Its results are measured in kilobytes per second.

A8-7650K 2105
Ryzen 7 7840U 5723
+172%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

A8-7650K 23
Ryzen 7 7840U 109
+379%

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

A8-7650K 108
Ryzen 7 7840U 237
+120%

Gaming performance

Pros & cons summary


Performance score 1.97 15.71
Physical cores 4 8
Threads 4 16
Chip lithography 28 nm 4 nm
Power consumption (TDP) 95 Watt 28 Watt

Ryzen 7 7840U has a 697.5% higher aggregate performance score, 100% more physical cores and 300% more threads, a 600% more advanced lithography process, and 239.3% lower power consumption.

The Ryzen 7 7840U is our recommended choice as it beats the A8-7650K in performance tests.

Note that A8-7650K is a desktop processor while Ryzen 7 7840U is a notebook one.


Should you still have questions on choice between A8-7650K and Ryzen 7 7840U, ask them in Comments section, and we shall answer.

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AMD A8-7650K
A8-7650K
AMD Ryzen 7 7840U
Ryzen 7 7840U

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