Ryzen 7 7840H vs Ryzen 9 8945H

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Aggregate performance score

Ryzen 9 8945H
2023
8 cores / 16 threads, 45 Watt
19.58
+5.6%

Ryzen 9 8945H outperforms Ryzen 7 7840H by a small 6% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 8945H and Ryzen 7 7840H processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking307338
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesAMD Hawk Point (Zen 4/4c, Ryzen 8040)no data
Power efficiency39.6848.33
Architecture codenameHawk Point-HS (Zen 4) (2023−2024)Phoenix (2023−2024)
Release date6 December 2023 (less than a year ago)January 2023 (1 year ago)

Detailed specifications

Ryzen 9 8945H and Ryzen 7 7840H 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 cores8 (Octa-Core)8 (Octa-Core)
Threads1616
Base clock speed4 GHz3.8 GHz
Boost clock speed5.2 GHz5.1 GHz
L1 cache512 KB64K (per core)
L2 cache8 MB1 MB (per core)
L3 cache16 MB16 MB (shared)
Chip lithography4 nm4 nm
Die size178 mm2178 mm2
Maximum core temperature100 °Cno data
Number of transistorsno data25,000 million
64 bit support++
Windows 11 compatibilityno data+

Compatibility

Information on Ryzen 9 8945H and Ryzen 7 7840H 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 configurationno data1
SocketFP7/FP7r2/FP8FP8
Power consumption (TDP)45 Watt35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 8945H and Ryzen 7 7840H. You'll probably need this information if you require some particular technology.

Instruction set extensionsRyzen AI, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SMEno data
AES-NI++
FMA+-
AVX++
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 8945H and Ryzen 7 7840H are enumerated here.

AMD-V-+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 8945H and Ryzen 7 7840H. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5DDR5-5600

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon 780MAMD Radeon 780M

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 8945H and Ryzen 7 7840H.

PCIe versionno data4.0
PCI Express lanesno data20

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.

Ryzen 9 8945H 19.58
+5.6%
Ryzen 7 7840H 18.55

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.

Ryzen 9 8945H 29965
+5.5%
Ryzen 7 7840H 28390

Gaming performance

Pros & cons summary


Performance score 19.58 18.55
Power consumption (TDP) 45 Watt 35 Watt

Ryzen 9 8945H has a 5.6% higher aggregate performance score.

Ryzen 7 7840H, on the other hand, has 28.6% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Ryzen 9 8945H and Ryzen 7 7840H.


Should you still have questions on choice between Ryzen 9 8945H and Ryzen 7 7840H, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 8945H
Ryzen 9 8945H
AMD Ryzen 7 7840H
Ryzen 7 7840H

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


5 2 votes

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Questions & comments

Here you can ask a question about Ryzen 9 8945H or Ryzen 7 7840H, agree or disagree with our judgements, or report an error or mismatch.