Intel Core i7-1255U vs Intel Core i7-7820X

Processor comparisons   10-01-2022
   For example you can't decide which processor to buy, you can make a decision after reading the comprehensive tests Intel Core i7-1255U vs Intel Core i7-7820X and decide which is better for games or simple use for streaming, machine learning, programming, video editing, rendering. Here is useful information from various benchmarks or real streaming and video editing tests. A thorough review of all the specifications, to make it easier to understand, is summarized in the table.
   From the comparison video, you can get the results of parallel examination in software tests like Prime95, Furmark, VeraCrypt, RealBench, MATLAB, GeekBench 6, 5.2, Handbrake, UserBenchmark, WPrime, SuperPi, AIDA64, 7zip, World of Tanks enCore Benchmark, 3DMark, Gears 5, Dolphin Emulator, PassMark, PCMark 10, Blender, Blender, Cinebench 23 (20, 15), DaVinci Resolve Studio.
   Gaming performance of CPUs in:

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

After looking at the data of all benchmarks and videos, you already be able to know which CPU is better to buy for gaming Intel Core i7-7820X or Intel Core i7-1255U.

Summary benchmark results

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

Core i7-1255U

55%

Core i7-7820X

55%

Gaming performance
Summary result of all game benchmarks.

Core i7-1255U

54%

Core i7-7820X

55%

For the maximum in this test, the results of the most powerful processor in the site database are taken. 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. Therefore, if you think that the selected CPU has a little game result, look at the FPS that it produces in real games in the final table below.
List of other games in which CPU comparisons were performed: League of Legends (LOL), Forza Horizon 4, Counter-Strike: Global Offensive (CS GO), DOTA 2A, Control, Monster Hunter World, The Witcher 3: Wild Hunt, Ghostrunner, PlayerUnknown's Battlegrounds (PUBG), Resident Evil 7 Biohazard, Hitman 3, Microsoft Flight Simulator, Metro Exodus, NBA 2K20, Shadow of the Tomb Raider, Horizon Zero Dawn, Battlefield V, Half-Life: Alyx.

Gaming benchmark

Fortnite	95.1	98.5
Valorant	108.1	111.9
Cyberpunk 2077	60.5	62.7
Apex Legends	101.6	105.2
Call of Duty Warzone	81.0	83.9
Overwatch	87.5	90.6
Red Dead Redemption 2	74.6	77.2
DOOM Eternal	54.0	55.9
Warzone	84.3	87.3
Assassin's Creed	90.8	94.0
Valheim	89.7	92.9

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, 4K or FullHD. Therefore, 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 get acquainted with the benchmarks that are made with the same video card that is installed in your computer.

Power consumption

Core i7-1255U

278%

Core i7-7820X

32%

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 Core i7-1255U is more energy efficient than the Core i7-7820X since it has less power consumption: 15W vs. 140W. Power consumption is especially important for laptops. And TDP should be taken into account when choosing a processor cooling system. 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 want to use the processor not only for gaming, but also for streaming, programming, video editing or video rendering, machine learning, then the main parameter for you is its performance in multi-threaded mode. In this mode, to achieve maximum performance, the CPU uses all threads and cores 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 use only one core to run, and all the advantages of multi-core mode turns out to be unnecessary.
Cinebench 23, 20 an 15
The results of this benchmark show Single-threaded and Multi-threaded CPU performance

	Intel Core i7-1255U	Intel Core i7-7820X
Cinbench 15 Single-core	230	197
Cinbench 15 Multi-core	1691	1887
Cinbench 20 Single-core	554	498
Cinbench 20 Multi-core	3839	5155
Cinbench 23 Single-core	1297	1246
Cinbench 23 Multi-core	12654	12165

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

	Intel Core i7-1255U	Intel Core i7-7820X
Single-Core	3035	2502
Multi-Core	17715	17305

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

	Intel Core i7-1255U	Intel Core i7-7820X
Single-Core	1251	1357
Multi-Core	6947	10261

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 you. And the easier it will be to upgrade the system in the future. The same benefits from the presence of overclocking. If the processor can be overclocked, thereby increasing its performance, then it will continue to maintain maximum FPS even in new games. The savings are obvious! Accordingly, there is no longer a need to buy a new CPU to enjoy the games any longer.

	Intel Core i7-1255U	Intel Core i7-7820X
Announcement date	January 07, 2022	April 01, 2017
Type	Laptop	Desktop
Socket	FCBGA1744	FCLGA2066
Core name	Alder Lake-U	Skylake
Architecture	x86	x86
Generation	12	7
Turbo Frequency	4.7 MHz	4.3 MHz
Frequency	1.7 MHz	3.6 MHz
Cores	10	8
Threads	12	16
Bus rate	8 GT/s	8 GT/s
Bit	64	64
Lithography	10 nm	14 nm
Transistors count	9800 millions	8400 millions
Power consumption (TDP)	15 W	140 W
Memory type	Up to DDR5 4800 MT/s Up to DDR4 3200 MT/s Up to LPDDR5 5200 MT/s Up to LPDDR4x 4267 MT/s	DDR4-2666
Max. Memory	64 Gb	128 Gb
Memory Frequency
Memory bandwidth	45.8 GB/s	85 GB/s
L1 cache
L2 cache
L3 cache	24 MB	11 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 52% better than Core i7-1255U in terms of CPU frequency. Another difference is that Core i7-1255U 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 i7-1255U is better: 14
The number of parameters for which Intel Core i7-7820X is better: 19
However, it should be understood that all the number that you have looked at here do not mean that taking them into account you should entirely trust a simple comparison of these figures. Better to watch benchmarks video and read the reviews of real owners of Intel Core i7-1255U and Intel Core i7-7820X before deciding which CPU to buy for gaming and which not.

Intel Core i7-1255U - all data

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

• Intel Core i7-1255U specs and review.

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.