AMD EPYC 7742 vs AMD Ryzen 9 3900X

Processor comparisons 23-03-2021

   Perhaps you can't decide which processor to buy, you can make a choice after reading the full tests AMD EPYC 7742 vs AMD Ryzen 9 3900X and see which is better for games or normal use for streaming, video editing, rendering, programming, machine learning. Here is useful information from real streaming and video editing tests or many benchmarks. A thorough review of all the technical characteristics, to make it easier to understand, is summarized in the table.
   From the video comparison, you can get the results of parallel examination in software tests like Furmark, PCMark 10, PassMark, Blender, AIDA64, 3DMark, Dolphin Emulator, Gears 5, World of Tanks enCore Benchmark, SuperPi, UserBenchmark, WPrime, Geekbench 5.2, Prime95, VeraCrypt, Cinebench 23 (20, 15), RealBench, Blender, DaVinci Resolve Studio, Handbrake, MATLAB, 7zip.
   Gaming performance of processors in:

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

After looking at the data of all benchmarks and videos, you can already make an briefed decision about which processor is better to buy for gaming AMD Ryzen 9 3900X or AMD EPYC 7742.

Summary benchmark results

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

Processor Benchmark

EPYC 7742

87%

Ryzen 9 3900X

68%

This shows the performance of the processors in single-threaded and multi-threaded mode. In this comparison, EPYC 7742 is 21% better than Ryzen 9 3900X. The data source is several popular tests. More detailed information of the benchmarks is below.

Gaming performance
Summary result of all game benchmarks.

EPYC 7742

92%

Ryzen 9 3900X

61%

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

Gaming benchmark

Fortnite	163.1	108.5
Valorant	185.4	123.3
Cyberpunk 2077	103.8	69.0
Apex Legends	174.3	115.9
Call of Duty Warzone	139.0	92.5
Overwatch	150.2	99.9
Red Dead Redemption 2	127.9	85.1
DOOM Eternal	92.7	61.7
Warzone	144.6	96.2
Assassin's Creed	155.7	103.6
Valheim	153.9	102.3

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: FullHD, 2K or 4K. 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

EPYC 7742

16%

Ryzen 9 3900X

42%

To make a finishing resolution 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 9 3900X is more energy efficient than the EPYC 7742 since it has less power consumption: 225W vs. 105W. Power consumption is especially 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 want to use the processor not only for gaming, but also for video rendering or video editing, programming, streaming, machine learning, then first of all you need to pay attention to the performance in multi-threaded mode. In this mode, the CPU turns on all cores and threads that it has to the maximum to achieve maximum efficiency. You will learn this data from the benchmark tables below. Before using the data from these tests, be sure to check whether the software you are going to use on your computer supports multi-threaded mode. Because 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 EPYC 7742	AMD Ryzen 9 3900X
Cinbench 15 Single-core	202	214
Cinbench 15 Multi-core	8334	3168
Cinbench 20 Single-core	398	521
Cinbench 20 Multi-core	20644	7178
Cinbench 23 Single-core	933	1342
Cinbench 23 Multi-core	45938	18424

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

	AMD EPYC 7742	AMD Ryzen 9 3900X
Single-Core	2352	2758
Multi-Core	67386	32949

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

	AMD EPYC 7742	AMD Ryzen 9 3900X
Single-Core	1091	1335
Multi-Core	48624	13268

Comparison of specifications

In the specification comparison table, the processor release date and overclocking capability will be the most helpful. The newer the processor, the longer it will last you. And the easier it will be to upgrade the system later. The same can be said about overclocking. If the processor can be overclocked, thereby increasing its performance, then it will still be able to produce maximum FPS even in new games. It turns out that there is no longer a need to buy a new CPU to enjoy the games any longer. The savings are obvious!

	AMD EPYC 7742	AMD Ryzen 9 3900X
Announcement date	April 01, 2019	July 07, 2019
Type	Server	Desktop
Socket	SP3	AM4
Core name	Rome	Matisse
Architecture	Zen 2	Zen 2
Generation	2	3
Turbo Frequency	3.4 MHz	4.6 MHz
Frequency	2.25 MHz	3.8 MHz
Cores	64	12
Threads	128	24
Bus rate
Bit	64	64
Lithography		7 nm
Transistors count	86000 millions	7800 millions
Power consumption (TDP)	225 W	105 W
Memory type	DDR4	DDR4
Max. Memory
Memory Frequency		3200
Memory bandwidth
L1 cache		768KB
L2 cache		6MB
L3 cache	256MB	64MB
Overclocking	No	Yes
Supports ECC	No	No
Part number	100-000000053 100-100000053WOF	100-000000023 100-100000023BOX 100-100000023MPK

In this comparison block, you should pay attention to the differences in clock speed and the number of cores. Here Ryzen 9 3900X is 40% better than EPYC 7742 in terms of CPU frequency. Another difference is that EPYC 7742 has 52 more core than Ryzen 9 3900X. 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 EPYC 7742 is better: 20
The number of parameters for which AMD Ryzen 9 3900X is better: 15
However, it should be understood that all the figures that you have looked at here do not mean that you should be guided entirely by them and trust a simple quantitative comparison. Be sure to watch the video tests and read the opinion of of people who bought AMD EPYC 7742 and AMD Ryzen 9 3900X before making a decision which CPU to buy for gaming and which not.
• Cinebench r15 score
• Cinebench r20 score
• Cinebench r23 score
• GeekBench 5 score

Versus Battle of the Processors
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• EPYC 7543 Vs EPYC 7742
• EPYC 7513 Vs EPYC 7742
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• EPYC 74F3 Vs EPYC 7742
• EPYC 7443P Vs EPYC 7742

• AMD EPYC 7742 specs and review.

• AMD Ryzen 9 3900X specs and review.