AMD Ryzen 5 7645HX vs AMD Ryzen 7 5800U

Processor comparisons   15-02-2023
   If you can't decide which processor to buy, you can make a decision after reading the comprehensive tests AMD Ryzen 5 7645HX vs AMD Ryzen 7 5800U and see which is better for games or normal use for machine learning, video editing, programming, streaming, rendering. Here you can find useful information from several benchmarks or real streaming and video editing tests. A careful analysis of all the specifications, so that it can be easier to understand, is summarized in the table.
   From the comparison video, you can get the results of parallel examination in special testing software like Blender, SuperPi, Prime95, World of Tanks enCore Benchmark, Gears 5, UserBenchmark, 3DMark, Cinebench 23 (20, 15), DaVinci Resolve Studio, Handbrake, GeekBench 6, 5.2, VeraCrypt, WPrime, PassMark, AIDA64, Dolphin Emulator, MATLAB, Furmark, Blender, RealBench, 7zip, PCMark 10.
   Gaming performance of CPUs in:

Overwatch
World of Warcraft: Shadowlands
Fallout 76
Rainbow Six Siege
Fortnite
Last Man Standing
Red Dead Redemption 2
Valheim
Call of Duty: Warzone and Modern Warfare
Borderlands 3
Grand Theft Auto V
Halo Infinite
Apex Legends
DOOM: Eternal
Valorant
Assassin's Creed Valhalla
Death Stranding
Watch Dogs Legion
Cyberpunk 2077

After reading the results of all benchmarks and videos, you can already make an informed decision about which processor is better to buy for gaming AMD Ryzen 7 5800U or AMD Ryzen 5 7645HX.

Summary benchmark results

As a percentage of the maximum value based on a sample from the entire base of all processors
Processor Benchmark

Ryzen 5 7645HX

61%

Ryzen 7 5800U

56%

The number of this parameter shows the performance of the processors in single-threaded and multi-threaded mode. In this comparison, Ryzen 5 7645HX is 8% better than Ryzen 7 5800U. The data source is several popular tests. Detailed information can be found below.

Gaming performance
Summary result of all game benchmarks.

Ryzen 5 7645HX

57%

Ryzen 7 5800U

54%

The maximum result in this parameter is 100 percent, which is the performance of the most powerful processor at the moment. And of course, this is a server processor, on which no one will play games. Because this processor costs several tens of thousands of dollars. Therefore, if you think that the selected CPU has a small game result, just look at the FPS that it produces in real games in the summary table below.
List of less popular games in which CPU comparisons were performed: Hitman 3, Counter-Strike: Global Offensive (CS GO), Monster Hunter World, The Witcher 3: Wild Hunt, Half-Life: Alyx, Resident Evil 7 Biohazard, Microsoft Flight Simulator, PlayerUnknown's Battlegrounds (PUBG), Metro Exodus, NBA 2K20, Forza Horizon 4, League of Legends (LOL), Battlefield V, Horizon Zero Dawn, Ghostrunner, Shadow of the Tomb Raider, DOTA 2A, Control.

Gaming benchmark

Fortnite	100.8	95.4
Valorant	114.6	108.4
Cyberpunk 2077	64.2	60.7
Apex Legends	107.7	101.9
Call of Duty Warzone	85.9	81.3
Overwatch	92.8	87.8
Red Dead Redemption 2	79.1	74.8
DOOM Eternal	57.3	54.2
Warzone	89.4	84.5
Assassin's Creed	96.2	91.0
Valheim	95.1	89.9

The numbers in this table indicate the maximum FPS that was received on the device with the corresponding processor. Depending on the configuration of the computer (RAM size and Video Card) and graphics quality settings (Ultra, Medium, Normal), the results may differ quite significantly. We recommend that you better study the results of the Cinebench, GeekBench and Passmark becnmarks.
The computers that were in the comparisons not only did they have different video cards and different amounts of RAM. But users also tested them at different screen resolutions: 2K, 4K or FullHD. Therefore, the game benchmark data is approximate. But all video cards met the average system requirements of games. You will get more accurate information about how powerful the processor will be in games, if you get acquainted with the benchmarks that are made with the same video card that is installed in your computer.

Power consumption

Ryzen 5 7645HX

116%

Ryzen 7 5800U

244%

To make a final decision on which processor is better, you should also consider the generation of its core. It is clear that the newer the generation, the better the performance of the processor in games and benchmarks, as well as its energy efficiency. In this case the Ryzen 7 5800U is more energy efficient than the Ryzen 5 7645HX as it consumes less power: 55W vs. 20W. Power consumption is particularly important for laptops. And TDP should be taken into account when choosing a processor cooling system. You need to buy a cooler that has the TDP data specified in the specification was greater than the TDP of the compared processor.

Software benchmarks

If you plan to use the processor not only for gaming, but also for machine learning, video editing or video rendering, streaming, programming, then the main parameter for you is its performance in multi-threaded mode. In this mode, to reach maximum efficiency, the processor turns on all cores and threads that it has. You will learn this data from the benchmark tables below. Before using the data from these tests, be sure to check whether the program you are going to use on your computer supports multi-threaded mode. Since there are still many programs that use only one core to work, and all the benefit of multi-core mode are unused.
Cinebench 23, 20 an 15
The results of this benchmark show Single-threaded and Multi-threaded CPU performance

	AMD Ryzen 5 7645HX	AMD Ryzen 7 5800U
Cinbench 15 Single-core	220	208
Cinbench 15 Multi-core	3665	2011
Cinbench 20 Single-core	533	483
Cinbench 20 Multi-core	8770	4407
Cinbench 23 Single-core	1366	1201
Cinbench 23 Multi-core	24106	12266

Passmark
This popular benchmark displays Multi-threaded and Single-threaded processor performance

	AMD Ryzen 5 7645HX	AMD Ryzen 7 5800U
Single-Core	2897	2679
Multi-Core	38879	22174

GeekBench 6, 5.2
This benchmark shows Multi-threaded and Single-threaded processor performance

	AMD Ryzen 5 7645HX	AMD Ryzen 7 5800U
Single-Core	1918	1468
Multi-Core	12566	7215

Comparison of specifications

In the specification comparison table, the most useful will be the the possibility of overclocking it and release date of the processor. The newer the processor, the longer it will last you. And the easier it will be to upgrade the system later. The same benefits from the presence of overclocking. When the processor can be overclocked, increasing its performance, then it will continue to maintain maximum FPS even in new games. Accordingly, you do not need to buy a new CPU to enjoy the games any longer. The economy are obvious!

	AMD Ryzen 5 7645HX	AMD Ryzen 7 5800U
Announcement date	January 27, 2023	February 22, 2021
Type	Laptop	Laptop
Socket	FL1	FP6
Core name	Dragon Range	Cezanne
Architecture	Zen 4	Zen 3
Generation	5	5
Turbo Frequency	5 MHz	4.4 MHz
Frequency	4 MHz	1.9 MHz
Cores	6	8
Threads	12	16
Bus rate
Bit	64	64
Lithography	5 nm	7 nm
Transistors count	12600 millions	6200 millions
Power consumption (TDP)	55 W	20 W
Memory type	DDR5	DDR4-3200 LPDDR4-4266
Max. Memory	64 Gb
Memory Frequency	5200	3200
Memory bandwidth
L1 cache	384KB
L2 cache	6MB	4MB
L3 cache	32MB	32MB
Overclocking	Yes	No
Supports ECC	No	No
Part number	100-000000872

In this comparison block, you should pay attention to the differences in clock speed and the number of cores. Here Ryzen 5 7645HX is 52% better than Ryzen 7 5800U in terms of CPU frequency. Another difference is that Ryzen 7 5800U has 2 more core than Ryzen 5 7645HX. Also keep in mind that high CPU frequency affects battery life through power consumption (relevant for laptops).

Result:
The number of parameters for which AMD Ryzen 5 7645HX is better: 31
The number of parameters for which AMD Ryzen 7 5800U is better: 3
Although it should be understood that all the data that you have looked at here do not mean that taking them into account you should entirely trust a simple quantitative comparison. Be sure to watch the video tests and read the reviews of of people who bought AMD Ryzen 5 7645HX and AMD Ryzen 7 5800U before making a selection which processor to buy for gaming and which not.

AMD Ryzen 5 7645HX - all data

• Cinebench r15 score
• Cinebench r20 score
• Cinebench r23 score
• GeekBench 6, 5.2 score

• AMD Ryzen 5 7645HX specs and review.

• AMD Ryzen 7 5800U specs and review.