i9-7900X vs Ryzen 9 7940H

VS

Aggregate performance score

Ryzen 9 7940H
2023
8 cores / 16 threads, 35 Watt
18.04
+36.2%
Core i9-7900X
2017
10 cores / 20 threads, 140 Watt
13.25

Ryzen 9 7940H outperforms Core i9-7900X by a substantial 36% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 7940H and Core i9-7900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking340568
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data2.96
Market segmentLaptopDesktop processor
Seriesno dataCore i9 (Desktop)
Power efficiency48.788.96
Architecture codenamePhoenix (2023−2024)Skylake (server) (2017−2018)
Release dateJanuary 2023 (1 year ago)30 May 2017 (7 years ago)
Launch price (MSRP)no data$999

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 7940H and Core i9-7900X 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)10 (Deca-Core)
Threads1620
Base clock speed4 GHz3.3 GHz
Boost clock speed5.2 GHz4.5 GHz
Bus typeno dataDMI 3.0
Bus rateno data4 × 8 GT/s
Multiplierno data33
L1 cache64K (per core)640 KB
L2 cache1 MB (per core)10 MB
L3 cache16 MB (shared)13.75 MB
Chip lithography4 nm14 nm
Die size178 mm2no data
Maximum core temperatureno data95 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors25,000 millionno data
64 bit support++
Windows 11 compatibility++
Unlocked multiplier-+

Compatibility

Information on Ryzen 9 7940H and Core i9-7900X 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 (Uniprocessor)
SocketFP8Socket R4
Power consumption (TDP)35 Watt140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7940H and Core i9-7900X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI++
AVX++
vProno data+
Enhanced SpeedStep (EIST)no data+
Turbo Boost Technologyno data2.0
Hyper-Threading Technologyno data+
TSX-+
Turbo Boost Max 3.0no data+
Precision Boost 2+no data

Security technologies

Ryzen 9 7940H and Core i9-7900X technologies aimed at improving security, for example, by protecting against hacks.

EDBno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 7940H and Core i9-7900X are enumerated here.

AMD-V++
VT-dno data+
VT-xno data+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7940H and Core i9-7900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR5-5600DDR4
Maximum memory sizeno data128 GB
Max memory channelsno data4
Maximum memory bandwidthno data85.33 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardAMD Radeon 780MN/A

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 7940H and Core i9-7900X.

PCIe version4.03.0
PCI Express lanes2044

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 7940H 18.04
+36.2%
i9-7900X 13.25

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 7940H 28660
+36.2%
i9-7900X 21040

Gaming performance

Pros & cons summary


Performance score 18.04 13.25
Physical cores 8 10
Threads 16 20
Chip lithography 4 nm 14 nm
Power consumption (TDP) 35 Watt 140 Watt

Ryzen 9 7940H has a 36.2% higher aggregate performance score, a 250% more advanced lithography process, and 300% lower power consumption.

i9-7900X, on the other hand, has 25% more physical cores and 25% more threads.

The Ryzen 9 7940H is our recommended choice as it beats the Core i9-7900X in performance tests.

Be aware that Ryzen 9 7940H is a notebook processor while Core i9-7900X is a desktop one.


Should you still have questions on choice between Ryzen 9 7940H and Core i9-7900X, ask them in Comments section, and we shall answer.

Vote for your favorite

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AMD Ryzen 9 7940H
Ryzen 9 7940H
Intel Core i9-7900X
Core i9-7900X

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Community ratings

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Questions & comments

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