Intel Core i7-7900X vs Intel Core i9-7920X

Processor comparisons   23-03-2021
   If you can't decide which CPU to buy, you can make a decision after reading the comprehensive tests Intel Core i7-7900X vs Intel Core i9-7920X and understand which is better for games or simple use for video editing, streaming, programming, rendering, machine learning. Here is all information from real video editing and streaming tests or different benchmarks. A step-by-step analysis of all the specifications, to make it easier to understand, is summarized in the table.
   From the video comparison, you can get the results of joint testing in software tests such as 7zip, VeraCrypt, WPrime, Dolphin Emulator, 3DMark, MATLAB, SuperPi, PassMark, Handbrake, Cinebench 23 (20, 15), Furmark, GeekBench 6, 5.2, PCMark 10, Prime95, UserBenchmark, DaVinci Resolve Studio, Blender, Blender, Gears 5, RealBench, AIDA64, World of Tanks enCore Benchmark.
   Gaming performance of processors in:

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

After reading the results of joint benchmarks and videos, you can already make an briefed decision about which processor is better to buy for gaming Intel Core i9-7920X or Intel Core i7-7900X.

Summary benchmark results

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

Core i7-7900X

55%

Core i9-7920X

57%

This value shows the performance of the processors in single-threaded and multi-threaded mode. In this comparison, Core i9-7920X is 3% better than Core i7-7900X. The data source is several popular tests. Detailed information can be found below.

Gaming performance
Summary result of all game benchmarks.

Core i7-7900X

57%

Core i9-7920X

57%

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

Gaming benchmark

Fortnite	100.5	102.0
Valorant	114.2	115.9
Cyberpunk 2077	63.9	64.9
Apex Legends	107.3	108.9
Call of Duty Warzone	85.6	86.9
Overwatch	92.5	93.9
Red Dead Redemption 2	78.8	80.0
DOOM Eternal	57.1	57.9
Warzone	89.1	90.4
Assassin's Creed	95.9	97.4
Valheim	94.8	96.2

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 computers participating in the comparing not only were the equipped with different video cards and different amounts of RAM. But users also tested them at different screen resolutions: 4K, 2K or FullHD. So 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 compare it in one assembly with the video card that is installed in your computer.

Power consumption

Core i7-7900X

32%

Core i9-7920X

28%

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 Core i7-7900X is more energy efficient than the Core i9-7920X as it consumes less power: 140W vs. 140W. Power consumption is particularly important for laptops. And TDP should be taken into account when choosing a processor cooling system. 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 machine learning, video editing or video rendering, streaming, programming, then first of all you need to pay attention to the performance in multi-threaded mode. In this mode, to achieve maximum efficiency, the processor uses all threads and cores that it has. 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. Because there are still many programs that can 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

	Intel Core i7-7900X	Intel Core i9-7920X
Cinbench 15 Single-core	225	188
Cinbench 15 Multi-core	2318	2438
Cinbench 20 Single-core	518	532
Cinbench 20 Multi-core	5234	6318
Cinbench 23 Single-core	1295	1400
Cinbench 23 Multi-core	12538	17104

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

	Intel Core i7-7900X	Intel Core i9-7920X
Single-Core	2583	2458
Multi-Core	19299	23494

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

	Intel Core i7-7900X	Intel Core i9-7920X
Single-Core	1370	1206
Multi-Core	12235	13717

Comparison of specifications

In the specification comparison table, the processor release date and overclocking capability will be the most useful. 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 can be said about overclocking. When the processor can be overclocked, increasing its performance, then it will still be able to produce maximum FPS even in the newest games. It turns out that there is no longer a need to buy a new CPU to enjoy the games any longer. The economy are obvious!

	Intel Core i7-7900X	Intel Core i9-7920X
Announcement date	April 01, 2017	April 01, 2017
Type	Desktop	Desktop
Socket	FCLGA2066	FCLGA2066
Core name	Skylake	Skylake
Architecture	x86	x86
Generation	7	10
Turbo Frequency	4.3 MHz	4.3 MHz
Frequency	3.3 MHz	2.9 MHz
Cores	10	12
Threads	20	24
Bus rate	8 GT/s	8 GT/s
Bit	64	64
Lithography	14 nm	14 nm
Transistors count	8400 millions	7800 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	13.75 MB	16.5 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 i7-7900X is 12% better than Core i9-7920X in terms of CPU frequency. Another difference is that Core i9-7920X has 2 more core than Core i7-7900X. 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 i7-7900X is better: 5
The number of parameters for which Intel Core i9-7920X is better: 22
However, it should be realized that all the data in the text above do not mean that taking them into account you should completely trust a simple comparison of these numbers. Be sure to watch the video tests and read the opinion of real owners of Intel Core i7-7900X and Intel Core i9-7920X before deciding which processor to buy for gaming and which not.

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.

Intel Core i9-7920X - all data

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

• Intel Core i9-7920X specs and review.