AMD Ryzen 5 PRO 5645 vs AMD Ryzen 9 7900

Processor comparisons 08-02-2023

   If you have difficulties with the choice of a CPU, you will solve them by reading the full tests AMD Ryzen 5 PRO 5645 vs AMD Ryzen 9 7900 and see which is better for games or normal use for streaming, machine learning, programming, video editing, rendering. Here is useful information from various benchmarks or real video editing and streaming tests. A step-by-step analysis of all the technical characteristics, so that it can be easier to read, is summarized in the table.
   From the video comparison, you can get the results of joint testing in special test applications like MATLAB, 3DMark, Furmark, Blender, PCMark 10, DaVinci Resolve Studio, Blender, Handbrake, 7zip, SuperPi, VeraCrypt, AIDA64, Dolphin Emulator, WPrime, Gears 5, UserBenchmark, RealBench, World of Tanks enCore Benchmark, Cinebench 23 (20, 15), GeekBench 6, 5.2, Prime95, PassMark.
   Gaming performance of CPUs in:

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

After reading the results these benchmarks and videos, you already be able to know which CPU is better to buy for gaming AMD Ryzen 9 7900 or AMD Ryzen 5 PRO 5645.

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 PRO 5645

55%

Ryzen 9 7900

65%

The number of this parameter shows the performance of the processors in single-threaded and multi-threaded mode. In this comparison, Ryzen 9 7900 is 15% better than Ryzen 5 PRO 5645. The data source is several popular tests. Detailed information can be found below.

Gaming performance
Summary result of all game benchmarks.

Ryzen 5 PRO 5645

54%

Ryzen 9 7900

62%

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: Microsoft Flight Simulator, Forza Horizon 4, DOTA 2A, Half-Life: Alyx, Monster Hunter World, Resident Evil 7 Biohazard, Counter-Strike: Global Offensive (CS GO), NBA 2K20, Shadow of the Tomb Raider, Battlefield V, League of Legends (LOL), Horizon Zero Dawn, Ghostrunner, Control, Metro Exodus, The Witcher 3: Wild Hunt, Hitman 3, PlayerUnknown's Battlegrounds (PUBG).

Gaming benchmark

Fortnite	95.4	109.4
Valorant	108.4	124.3
Cyberpunk 2077	60.7	69.6
Apex Legends	101.9	116.8
Call of Duty Warzone	81.3	93.2
Overwatch	87.8	100.7
Red Dead Redemption 2	74.8	85.8
DOOM Eternal	54.2	62.1
Warzone	84.6	96.9
Assassin's Creed	91.1	104.4
Valheim	90.0	103.2

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 5 PRO 5645

91%

Ryzen 9 7900

50%

To make a finishing resolution 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 5 PRO 5645 is more energy efficient than the Ryzen 9 7900 as it consumes less power: 65W vs. 145W. Power consumption is particularly important for laptops. Also, when choosing a processor cooling system, it will be useful to know its TDP. 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 video editing or video rendering, streaming, programming, machine learning, then the main parameter for you is its performance in multi-threaded mode. In this mode, the processor includes all cores and threads that it has to the maximum to reach maximum efficiency. You will find out this data from the benchmark tables below. Before using the data from these tests, be sure to make sure that 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 advantages 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 PRO 5645	AMD Ryzen 9 7900
Cinbench 15 Single-core	237	296
Cinbench 15 Multi-core	1768	4744
Cinbench 20 Single-core	557	700
Cinbench 20 Multi-core	3929	11336
Cinbench 23 Single-core	1424	1777
Cinbench 23 Multi-core	10787	31142

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

	AMD Ryzen 5 PRO 5645	AMD Ryzen 9 7900
Single-Core	3054	3754
Multi-Core	19015	50221

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

	AMD Ryzen 5 PRO 5645	AMD Ryzen 9 7900
Single-Core	1775	2195
Multi-Core	7253	20946

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 benefits from the presence of overclocking. If the processor can be overclocked, thereby increasing its performance, then it will still be able to produce maximum FPS in the newest games. Accordingly, you do not need to buy a new CPU to enjoy the games any longer. The economy are obvious!

	AMD Ryzen 5 PRO 5645	AMD Ryzen 9 7900
Announcement date	September 20, 2022	December 12, 2022
Type	Desktop	Desktop
Socket	AM4	AM5
Core name	Vermeer	Raphael
Architecture	Zen 3	Zen 4
Generation	5	5
Turbo Frequency	4.6 MHz	5.4 MHz
Frequency	3.7 MHz	4.5 MHz
Cores	6	12
Threads	12	24
Bus rate
Bit	64	64
Lithography	7 nm	5 nm
Transistors count	4600 millions	12600 millions
Power consumption (TDP)	65 W	145 W
Memory type	DDR4	DDR4
Max. Memory
Memory Frequency	3200	3200
Memory bandwidth
L1 cache	384KB	768KB
L2 cache	3MB	12MB
L3 cache	16MB	64MB
Overclocking	No	Yes
Supports ECC	No	No
Part number	100-000000833

In this comparison block, you should pay attention to the differences in clock speed and the number of cores. Here Ryzen 9 7900 is 17% better than Ryzen 5 PRO 5645 in terms of CPU frequency. Another difference is that Ryzen 9 7900 has 6 more core than Ryzen 5 PRO 5645. 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 PRO 5645 is better: 2
The number of parameters for which AMD Ryzen 9 7900 is better: 31
Although it should be realized 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 numbers. Be sure to watch benchmarks video and read the reviews of of people who bought AMD Ryzen 5 PRO 5645 and AMD Ryzen 9 7900 before deciding which of the CPUs to buy for gaming.

AMD Ryzen 5 PRO 5645 - all data

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

• AMD Ryzen 5 PRO 5645 specs and review.

AMD Ryzen 9 7900 - all data

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

• AMD Ryzen 9 7900 specs and review.