Ryzen 9 9900X vs Ryzen 7 7840H

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Aggregate performance score

Ryzen 7 7840H
2023
8 cores / 16 threads, 35 Watt
18.55
Ryzen 9 9900X
2024
12 cores / 24 threads, 120 Watt
35.85
+93.3%

Ryzen 9 9900X outperforms Ryzen 7 7840H by an impressive 93% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 7 7840H and Ryzen 9 9900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking338107
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data66.77
Market segmentLaptopDesktop processor
Power efficiency48.3327.23
Architecture codenamePhoenix (2023−2024)Granite Ridge (2024)
Release dateJanuary 2023 (1 year ago)15 August 2024 (less than a year ago)
Launch price (MSRP)no data$499

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 7 7840H and Ryzen 9 9900X 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)12 (Dodeca-Core)
Threads1624
Base clock speed3.8 GHz4.4 GHz
Boost clock speed5.1 GHz5.6 GHz
L1 cache64K (per core)80 KB (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache16 MB (shared)64 MB (shared)
Chip lithography4 nm4 nm
Die size178 mm22x 70.6 mm2
Maximum core temperatureno data95 °C
Number of transistors25,000 million16,630 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier-+

Compatibility

Information on Ryzen 7 7840H and Ryzen 9 9900X 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
SocketFP8AM5
Power consumption (TDP)35 Watt120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 7 7840H and Ryzen 9 9900X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataSMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A
AES-NI++
AVX++
Precision Boost 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 7 7840H and Ryzen 9 9900X are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 7 7840H and Ryzen 9 9900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5-5600DDR5

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon 780MAMD Radeon Graphics

Peripherals

Specifications and connection of peripherals supported by Ryzen 7 7840H and Ryzen 9 9900X.

PCIe version4.05.0
PCI Express lanes2024

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 7 7840H 18.55
Ryzen 9 9900X 35.85
+93.3%

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 7 7840H 28390
Ryzen 9 9900X 54860
+93.2%

Gaming performance

Pros & cons summary


Performance score 18.55 35.85
Integrated graphics card 18.28 1.98
Physical cores 8 12
Threads 16 24
Power consumption (TDP) 35 Watt 120 Watt

Ryzen 7 7840H has 823.2% faster integrated GPU, and 242.9% lower power consumption.

Ryzen 9 9900X, on the other hand, has a 93.3% higher aggregate performance score, and 50% more physical cores and 50% more threads.

The Ryzen 9 9900X is our recommended choice as it beats the Ryzen 7 7840H in performance tests.

Be aware that Ryzen 7 7840H is a notebook processor while Ryzen 9 9900X is a desktop one.


Should you still have questions on choice between Ryzen 7 7840H and Ryzen 9 9900X, ask them in Comments section, and we shall answer.

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Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


AMD Ryzen 7 7840H
Ryzen 7 7840H
AMD Ryzen 9 9900X
Ryzen 9 9900X

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Community ratings

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


4.4 242 votes

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3.2 106 votes

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Questions & comments

Here you can ask a question about Ryzen 7 7840H or Ryzen 9 9900X, agree or disagree with our judgements, or report an error or mismatch.