Ryzen 7 7840U vs Ryzen 9 7845HX

VS

Aggregate performance score

Ryzen 9 7845HX
2023
12 cores / 24 threads, 55 Watt
28.71
+82.7%
Ryzen 7 7840U
2023
8 cores / 16 threads, 28 Watt
15.71

Ryzen 9 7845HX outperforms Ryzen 7 7840U by an impressive 83% based on our aggregate benchmark results.

Primary details

Comparing Ryzen 9 7845HX and Ryzen 7 7840U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking159435
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
Seriesno dataAMD Phoenix (Zen 4, Ryzen 7040)
Power efficiency49.4053.10
Architecture codenameDragon Range-HX (Zen 4) (2023−2024)Phoenix-U (Zen 4) (2023)
Release date4 January 2023 (1 year ago)May 2023 (1 year ago)

Detailed specifications

Ryzen 9 7845HX and Ryzen 7 7840U 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 cores12 (Dodeca-Core)8 (Octa-Core)
Threads2416
Base clock speed3 GHz3.3 GHz
Boost clock speed5.2 GHz5.1 GHz
L1 cache64K (per core)64K (per core)
L2 cache1 MB (per core)1 MB (per core)
L3 cache64 MB (shared)16 MB (shared)
Chip lithographyCCD = 5 nm, I/O = 6 nm4 nm
Die size2x 71 mm2178 mm2
Maximum core temperature100 °C100 °C
Number of transistors13,140 million25,000 million
64 bit support++
Windows 11 compatibility++
Unlocked multiplier+-

Compatibility

Information on Ryzen 9 7845HX and Ryzen 7 7840U 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
SocketFL1FP8
Power consumption (TDP)55 Watt28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 7845HX and Ryzen 7 7840U. 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 2++

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 7845HX and Ryzen 7 7840U are enumerated here.

AMD-V++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7845HX and Ryzen 7 7840U. 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 card
Compare
AMD Radeon 610M (400 - 2200 MHz)AMD Radeon 780M ( - 2700 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 7845HX and Ryzen 7 7840U.

PCIe version5.04.0
PCI Express lanes2820

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 7845HX 28.71
+82.7%
Ryzen 7 7840U 15.71

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 7845HX 45597
+82.7%
Ryzen 7 7840U 24956

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 9 7845HX 2651
+27.4%
Ryzen 7 7840U 2081

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 9 7845HX 13990
+60%
Ryzen 7 7840U 8744

Cinebench 15 64-bit multi-core

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

Ryzen 9 7845HX 4320
+117%
Ryzen 7 7840U 1990

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 9 7845HX 295
+11.7%
Ryzen 7 7840U 264

Geekbench 5.5 Multi-Core

Ryzen 9 7845HX 15068
+60.6%
Ryzen 7 7840U 9382

Blender(-)

Ryzen 9 7845HX 117
Ryzen 7 7840U 260
+122%

Geekbench 5.5 Single-Core

Ryzen 9 7845HX 2008
+15.5%
Ryzen 7 7840U 1738

7-Zip Single

Ryzen 9 7845HX 7018
+17.9%
Ryzen 7 7840U 5952

7-Zip

Ryzen 9 7845HX 106033
+92.3%
Ryzen 7 7840U 55145

WebXPRT 3

Ryzen 9 7845HX 357
+36.3%
Ryzen 7 7840U 262

CrossMark Overall

Ryzen 9 7845HX 1992
+29.9%
Ryzen 7 7840U 1534

WebXPRT 4 Overall

Ryzen 9 7845HX 282
+35.6%
Ryzen 7 7840U 208

Blender v3.3 Classroom CPU(-)

Ryzen 9 7845HX 185
Ryzen 7 7840U 421
+128%

Geekbench 6.3 Multi-Core

Ryzen 9 7845HX 12585
+18.9%
Ryzen 7 7840U 10584

Geekbench 6.3 Single-Core

Ryzen 9 7845HX 2729
+14%
Ryzen 7 7840U 2394

Gaming performance

Pros & cons summary


Performance score 28.71 15.71
Integrated graphics card 2.85 18.32
Physical cores 12 8
Threads 24 16
Power consumption (TDP) 55 Watt 28 Watt

Ryzen 9 7845HX has a 82.7% higher aggregate performance score, and 50% more physical cores and 50% more threads.

Ryzen 7 7840U, on the other hand, has 542.8% faster integrated GPU, and 96.4% lower power consumption.

The Ryzen 9 7845HX is our recommended choice as it beats the Ryzen 7 7840U in performance tests.


Should you still have questions on choice between Ryzen 9 7845HX and Ryzen 7 7840U, ask them in Comments section, and we shall answer.

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AMD Ryzen 9 7845HX
Ryzen 9 7845HX
AMD Ryzen 7 7840U
Ryzen 7 7840U

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Community ratings

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