Ryzen 9 7945HX3D vs Ryzen 7 PRO 7840U

VS

Aggregate performance score

Ryzen 7 PRO 7840U
2023
8 cores / 16 threads, 28 Watt
15.52
Ryzen 9 7945HX3D
2023
16 cores / 32 threads, 55 Watt
36.15
+133%

Ryzen 9 7945HX3D outperforms Ryzen 7 PRO 7840U by a whopping 133% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 7 PRO 7840U and Ryzen 9 7945HX3D processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking44999
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesAMD Phoenix (Zen 4, Ryzen 7040)AMD Dragon Range (Zen 4, Ryzen 7045)
Power efficiency52.4662.20
Architecture codenamePhoenix (Zen 4) (2023)Dragon Range-HX (Zen 4) (2023−2024)
Release date3 May 2023 (1 year ago)27 July 2023 (1 year ago)

Detailed specifications

Ryzen 7 PRO 7840U and Ryzen 9 7945HX3D 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)16 (Hexadeca-Core)
Threads1632
Base clock speed3.3 GHz2.3 GHz
Boost clock speed5.1 GHz5.4 GHz
L1 cache512 KB64 KB (per core)
L2 cache8 MB1 MB (per core)
L3 cache16 MB128 MB (shared)
Chip lithography4 nm5 nm
Die size178 mm22x 71 mm2
Maximum core temperature100 °C89 °C
Number of transistorsno data17,840 million
64 bit support++
Windows 11 compatibility+no data
Unlocked multiplier-+

Compatibility

Information on Ryzen 7 PRO 7840U and Ryzen 9 7945HX3D 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
Socketno dataFL1
Power consumption (TDP)28 Watt55 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 7 PRO 7840U and Ryzen 9 7945HX3D. You'll probably need this information if you require some particular technology.

AES-NI-+
AVX-+
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 7 PRO 7840U and Ryzen 9 7945HX3D are enumerated here.

AMD-V-+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 7 PRO 7840U and Ryzen 9 7945HX3D. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR5-5200

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
AMD Radeon 780M ( - 2700 MHz)AMD Radeon 610M (400 - 2200 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 7 PRO 7840U and Ryzen 9 7945HX3D.

PCIe versionno data5.0
PCI Express lanesno data28

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 PRO 7840U 15.52
Ryzen 9 7945HX3D 36.15
+133%

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 PRO 7840U 24647
Ryzen 9 7945HX3D 57430
+133%

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.

Ryzen 7 PRO 7840U 2149
Ryzen 9 7945HX3D 2762
+28.5%

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.

Ryzen 7 PRO 7840U 9518
Ryzen 9 7945HX3D 16398
+72.3%

Cinebench 15 64-bit multi-core

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

Ryzen 7 PRO 7840U 2218
Ryzen 9 7945HX3D 5600
+152%

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.

Ryzen 7 PRO 7840U 265
Ryzen 9 7945HX3D 311
+17.4%

Geekbench 5.5 Multi-Core

Ryzen 7 PRO 7840U 9968
Ryzen 9 7945HX3D 19875
+99.4%

Blender(-)

Ryzen 7 PRO 7840U 237
+149%
Ryzen 9 7945HX3D 95

Geekbench 5.5 Single-Core

Ryzen 7 PRO 7840U 1853
Ryzen 9 7945HX3D 2133
+15.1%

7-Zip Single

Ryzen 7 PRO 7840U 5900
Ryzen 9 7945HX3D 7573
+28.4%

7-Zip

Ryzen 7 PRO 7840U 58386
Ryzen 9 7945HX3D 136201
+133%

WebXPRT 3

Ryzen 7 PRO 7840U 283
Ryzen 9 7945HX3D 480
+69.6%

CrossMark Overall

Ryzen 7 PRO 7840U 1595
Ryzen 9 7945HX3D 2086
+30.8%

WebXPRT 4 Overall

Ryzen 7 PRO 7840U 240
Ryzen 9 7945HX3D 328
+37%

Blender v3.3 Classroom CPU(-)

Ryzen 7 PRO 7840U 390
+160%
Ryzen 9 7945HX3D 150

Geekbench 6.3 Multi-Core

Ryzen 7 PRO 7840U 11130
Ryzen 9 7945HX3D 16957
+52.4%

Geekbench 6.3 Single-Core

Ryzen 7 PRO 7840U 2479
Ryzen 9 7945HX3D 2916
+17.6%

Gaming performance

Pros & cons summary


Performance score 15.52 36.15
Integrated graphics card 18.32 2.85
Recency 3 May 2023 27 July 2023
Physical cores 8 16
Threads 16 32
Chip lithography 4 nm 5 nm
Power consumption (TDP) 28 Watt 55 Watt

Ryzen 7 PRO 7840U has 542.8% faster integrated GPU, a 25% more advanced lithography process, and 96.4% lower power consumption.

Ryzen 9 7945HX3D, on the other hand, has a 132.9% higher aggregate performance score, an age advantage of 2 months, and 100% more physical cores and 100% more threads.

The Ryzen 9 7945HX3D is our recommended choice as it beats the Ryzen 7 PRO 7840U in performance tests.


Should you still have questions on choice between Ryzen 7 PRO 7840U and Ryzen 9 7945HX3D, ask them in Comments section, and we shall answer.

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AMD Ryzen 7 PRO 7840U
Ryzen 7 PRO 7840U
AMD Ryzen 9 7945HX3D
Ryzen 9 7945HX3D

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Community ratings

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4.3 133 votes

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Questions & comments

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