Intel Core i7-7820X vs Intel Core i7-7900X

Processor comparisons   24-03-2021
   For example you are thinking about choosing a processor, you will be able to make a decision after reading the detailed tests Intel Core i7-7820X vs Intel Core i7-7900X and understand which is better for games or normal use for machine learning, streaming, programming, video editing, rendering. Here is useful information from real video editing and streaming tests or many benchmarks. A thorough review of all the technical characteristics, to make it easier to read, is presented in the form of the table.
   From the video comparison, you can get the results of parallel examination in special test applications like MATLAB, Furmark, Cinebench 23 (20, 15), AIDA64, Blender, PassMark, Prime95, World of Tanks enCore Benchmark, GeekBench 6, 5.2, 7zip, VeraCrypt, PCMark 10, Blender, Dolphin Emulator, Gears 5, DaVinci Resolve Studio, WPrime, Handbrake, SuperPi, 3DMark, RealBench, UserBenchmark.
   Gaming performance of CPUs in:

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

After looking at the data these benchmarks and videos, you already be able to figure out which CPU is better to buy for gaming Intel Core i7-7900X or Intel Core i7-7820X.

Summary benchmark results

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

Core i7-7820X

55%

Core i7-7900X

55%

Gaming performance
Summary result of all game benchmarks.

Core i7-7820X

55%

Core i7-7900X

57%

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 this processor costs several tens of thousands of dollars. And if it seems to you that the selected CPU has a low game result, just look at the FPS that it produces in real games in the final table below.
List of other games in which processors were compared: Ghostrunner, The Witcher 3: Wild Hunt, League of Legends (LOL), Control, Battlefield V, Horizon Zero Dawn, Metro Exodus, Shadow of the Tomb Raider, PlayerUnknown's Battlegrounds (PUBG), Forza Horizon 4, Counter-Strike: Global Offensive (CS GO), Monster Hunter World, Microsoft Flight Simulator, Hitman 3, Resident Evil 7 Biohazard, Half-Life: Alyx, DOTA 2A, NBA 2K20.

Gaming benchmark

Fortnite	98.5	100.5
Valorant	111.9	114.2
Cyberpunk 2077	62.7	63.9
Apex Legends	105.2	107.3
Call of Duty Warzone	83.9	85.6
Overwatch	90.6	92.5
Red Dead Redemption 2	77.2	78.8
DOOM Eternal	55.9	57.1
Warzone	87.3	89.1
Assassin's Creed	94.0	95.9
Valheim	92.9	94.8

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 participating in the comparing not only were the equipped with different amounts of RAM and different video cards. But users also tested them at different screen resolutions: 4K, 2K 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

Core i7-7820X

32%

Core i7-7900X

32%

Software benchmarks

If you want to use the processor not only for gaming, but also for video rendering or video editing, streaming, machine learning, programming, then the main parameter for you is its performance in multi-threaded mode. In this mode, to reach maximum performance, the processor uses 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 can 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

	Intel Core i7-7820X	Intel Core i7-7900X
Cinbench 15 Single-core	197	225
Cinbench 15 Multi-core	1887	2318
Cinbench 20 Single-core	498	518
Cinbench 20 Multi-core	5155	5234
Cinbench 23 Single-core	1246	1295
Cinbench 23 Multi-core	12165	12538

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

	Intel Core i7-7820X	Intel Core i7-7900X
Single-Core	2502	2583
Multi-Core	17305	19299

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

	Intel Core i7-7820X	Intel Core i7-7900X
Single-Core	1357	1370
Multi-Core	10261	12235

Comparison of specifications

In the specification comparison table, the processor release date and overclocking capability will be the most useful. The newer the processor, 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, thereby increasing its performance, then it will continue to maintain maximum FPS in new games. The economy are obvious! Accordingly, you do not need to buy a new CPU to enjoy the games any longer.

	Intel Core i7-7820X	Intel Core i7-7900X
Announcement date	April 01, 2017	April 01, 2017
Type	Desktop	Desktop
Socket	FCLGA2066	FCLGA2066
Core name	Skylake	Skylake
Architecture	x86	x86
Generation	7	7
Turbo Frequency	4.3 MHz	4.3 MHz
Frequency	3.6 MHz	3.3 MHz
Cores	8	10
Threads	16	20
Bus rate	8 GT/s	8 GT/s
Bit	64	64
Lithography	14 nm	14 nm
Transistors count	8400 millions	8400 millions
Power consumption (TDP)	140 W	140 W
Memory type	DDR4-2666	DDR4-2666
Max. Memory	128 Gb	128 Gb
Memory Frequency
Memory bandwidth	85 GB/s	85 GB/s
L1 cache
L2 cache
L3 cache	11 MB	13.75 MB
Overclocking	No	No
Supports ECC	No	No
Part number

In this comparison block, you should pay attention to the differences in clock speed and the number of cores. Here Core i7-7820X is 8% better than Core i7-7900X in terms of CPU frequency. Another difference is that Core i7-7900X has 2 more core than Core i7-7820X. Also keep in mind that high CPU frequency affects battery life through power consumption (relevant for laptops).

Result:
The number of parameters for which Intel Core i7-7820X is better: 1
The number of parameters for which Intel Core i7-7900X is better: 24
However, it should be understood that the summary data in the text above do not mean that taking them into account you should undividedly trust a simple comparison of these numbers. Be sure to watch benchmarks video and read the reviews of real owners of Intel Core i7-7820X and Intel Core i7-7900X before making a decision which of the CPUs to buy for gaming.

Intel Core i7-7820X - all data

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

• Intel Core i7-7820X specs and review.

Intel Core i7-7900X - all data

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

• Intel Core i7-7900X specs and review.