Ryzen 7 3800X vs Ryzen 9 7940HX

VS

Aggregate performance score

Ryzen 9 7940HX
2024
16 cores / 32 threads, 55 Watt
34.28
+135%
Ryzen 7 3800X
2019
8 cores / 16 threads, 105 Watt
14.56

Ryzen 9 7940HX outperforms Ryzen 7 3800X by a whopping 135% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 7940HX and Ryzen 7 3800X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking112496
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data16.46
Market segmentLaptopDesktop processor
SeriesAMD Dragon Range (Zen 4, Ryzen 7045)AMD Ryzen 7
Power efficiency58.9813.12
Architecture codenameDragon Range-HX (Zen 4) (2023−2024)Matisse (2019−2020)
Release date17 January 2024 (less than a year ago)7 July 2019 (5 years ago)
Launch price (MSRP)no data$399

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 7940HX and Ryzen 7 3800X 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 cores16 (Hexadeca-Core)8 (Octa-Core)
Threads3216
Base clock speed2.4 GHz3.9 GHz
Boost clock speed5.2 GHz4.5 GHz
L1 cache1 MB96K (per core)
L2 cache16 MB512K (per core)
L3 cache64 MB32 MB
Chip lithography5 nm7 nm, 12 nm
Maximum core temperature100 °Cno data
Number of transistors9900 Million19,200 million
64 bit support++
Windows 11 compatibilityno data+
Unlocked multiplier-+

Compatibility

Information on Ryzen 9 7940HX and Ryzen 7 3800X 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 (Uniprocessor)
SocketFL1AM4
Power consumption (TDP)55 Watt105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7940HX and Ryzen 7 3800X. You'll probably need this information if you require some particular technology.

Instruction set extensionsMMX, 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 7940HX and Ryzen 7 3800X are enumerated here.

AMD-V-+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7940HX and Ryzen 7 3800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5DDR4 Dual-channel
Maximum memory sizeno data128 GB
Max memory channelsno data2
Maximum memory bandwidthno data51.196 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

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

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 7940HX 34.28
+135%
Ryzen 7 3800X 14.56

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 7940HX 54454
+135%
Ryzen 7 3800X 23125

Gaming performance

Pros & cons summary


Performance score 34.28 14.56
Recency 17 January 2024 7 July 2019
Physical cores 16 8
Threads 32 16
Chip lithography 5 nm 7 nm
Power consumption (TDP) 55 Watt 105 Watt

Ryzen 9 7940HX has a 135.4% higher aggregate performance score, an age advantage of 4 years, 100% more physical cores and 100% more threads, a 40% more advanced lithography process, and 90.9% lower power consumption.

The Ryzen 9 7940HX is our recommended choice as it beats the Ryzen 7 3800X in performance tests.

Be aware that Ryzen 9 7940HX is a notebook processor while Ryzen 7 3800X is a desktop one.


Should you still have questions on choice between Ryzen 9 7940HX and Ryzen 7 3800X, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 7940HX
Ryzen 9 7940HX
AMD Ryzen 7 3800X
Ryzen 7 3800X

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Community ratings

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Questions & comments

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