AMD Ryzen 9 3900 vs AMD Ryzen 7 5800U

Processor comparisons 17-03-2021

   You may have difficulties with the choice of a CPU, you will solve them by reading the full tests AMD Ryzen 9 3900 vs AMD Ryzen 7 5800U and see which is better for games or normal use for rendering, machine learning, video editing, streaming, programming. Here is useful information from different benchmarks or real streaming and video editing tests. A thorough review of all the technical characteristics, so that it can be easier to understand, is made by the table.
   From the video comparison, you can get the results of joint testing in synthetic type tests such as Cinebench 23 (20, 15), Dolphin Emulator, SuperPi, Gears 5, PassMark, 7zip, Prime95, WPrime, UserBenchmark, PCMark 10, Blender, Blender, GeekBench 6, 5.2, World of Tanks enCore Benchmark, RealBench, Handbrake, MATLAB, DaVinci Resolve Studio, 3DMark, AIDA64, VeraCrypt, Furmark.
   And how good the processors are in games:

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

After reading the results these benchmarks and videos, you can already make an briefed decision about which processor is better to buy for gaming AMD Ryzen 7 5800U or AMD Ryzen 9 3900.

Summary benchmark results

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

Ryzen 9 3900

59%

Ryzen 7 5800U

56%

This shows the performance of the processors in single-threaded and multi-threaded mode. In this comparison, Ryzen 9 3900 is 5% 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 9 3900

57%

Ryzen 7 5800U

54%

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

Gaming benchmark

Fortnite	101.6	95.4
Valorant	115.5	108.4
Cyberpunk 2077	64.7	60.7
Apex Legends	108.6	101.9
Call of Duty Warzone	86.6	81.3
Overwatch	93.5	87.8
Red Dead Redemption 2	79.7	74.8
DOOM Eternal	57.7	54.2
Warzone	90.1	84.5
Assassin's Creed	97.0	91.0
Valheim	95.9	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 tested computers not only did they have different amounts of RAM and different video cards. But users also tested them at different screen resolutions: 2K, FullHD or 4K. So the game benchmark data is approximate. But all video cards met the average system requirements of games. To be sure exactly how much performance the processor will be in games, if you compare it in one assembly with the video card that is installed in your computer.

Power consumption

Ryzen 9 3900

67%

Ryzen 7 5800U

244%

To make a finishing decision on which processor is better, you should also consider the generation of its core. The newer the processor generation, the better its performance in games and benchmarks, as well as its energy efficiency. In this case the Ryzen 7 5800U is more energy efficient than the Ryzen 9 3900 since it has less power consumption: 65W vs. 20W. Power consumption is particularly important for laptops. Also, when choosing a processor cooling system, it will be useful to know its TDP. It is necessary to calculate so that the TDP data specified in the cooler specification is greater than the TDP of the compared processor.

Software benchmarks

If you plan to use the processor not only for gaming, but also for streaming, machine learning, video editing or video rendering, programming, then first of all you need to pay attention to the performance in multi-threaded mode. In this mode, the CPU includes all cores and threads that it has to the maximum to achieve maximum efficiency. You will find out this data from the benchmark tables below. Before using the data from these tests, be sure to find out whether the software that you are going to use on your computer can work in multi-threaded mode. Since there are still many programs that use only one core to run, 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 9 3900	AMD Ryzen 7 5800U
Cinbench 15 Single-core	196	208
Cinbench 15 Multi-core	2922	2011
Cinbench 20 Single-core	485	483
Cinbench 20 Multi-core	6789	4407
Cinbench 23 Single-core	1149	1201
Cinbench 23 Multi-core	16943	12266

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

	AMD Ryzen 9 3900	AMD Ryzen 7 5800U
Single-Core	2627	2679
Multi-Core	30807	22174

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

	AMD Ryzen 9 3900	AMD Ryzen 7 5800U
Single-Core	1324	1468
Multi-Core	13362	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 later the processor is released, the longer it will last in your computer. And the easier it will be to upgrade the system in the future. 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 in the newest games. The savings are obvious! It turns out that there is no longer a need to buy a new CPU to enjoy the games any longer.

	AMD Ryzen 9 3900	AMD Ryzen 7 5800U
Announcement date	September 30, 2019	February 22, 2021
Type	Desktop	Laptop
Socket	AM4	FP6
Core name	Matisse	Cezanne
Architecture	Zen 2	Zen 3
Generation	2	5
Turbo Frequency	4.2 MHz	4.4 MHz
Frequency	3.1 MHz	1.9 MHz
Cores	12	8
Threads	24	16
Bus rate
Bit	64	64
Lithography	7 nm	7 nm
Transistors count	7800 millions	6200 millions
Power consumption (TDP)	65 W	20 W
Memory type	DDR4	DDR4-3200 LPDDR4-4266
Max. Memory
Memory Frequency	3200	3200
Memory bandwidth
L1 cache	768KB
L2 cache	6MB	4MB
L3 cache	64MB	32MB
Overclocking	No	No
Supports ECC	No	No
Part number	100-000000072

In this comparison block, you should pay attention to the differences in clock speed and the number of cores. Here Ryzen 9 3900 is 38% better than Ryzen 7 5800U in terms of CPU frequency. Another difference is that Ryzen 9 3900 has 4 more core than Ryzen 7 5800U. 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 9 3900 is better: 24
The number of parameters for which AMD Ryzen 7 5800U is better: 8
Although it should be understood that the summary data in the article above do not mean that taking them into account you should fully trust a simple comparison of these figures. Be sure to watch the testing video and read the reviews of real owners of AMD Ryzen 9 3900 and AMD Ryzen 7 5800U before making a choice which of the CPUs to buy for gaming.

• AMD Ryzen 9 3900 specs and review.

• AMD Ryzen 7 5800U specs and review.