Intel Core i7-1255U vs Intel Core i5-11400

Processor comparisons   10-01-2022
   You may have difficulties with the choice of a CPU, you will solve them by reading the detailed tests Intel Core i7-1255U vs Intel Core i5-11400 and see which is better for games or simple use for programming, machine learning, streaming, video editing, rendering. Here is all information from different benchmarks or real streaming and video editing tests. A step-by-step analysis of all the specifications, to make it easier to read, is presented in the form of the table.
   From the comparison video, you can get the results of joint testing in special test applications like SuperPi, DaVinci Resolve Studio, Prime95, PCMark 10, Cinebench 23 (20, 15), 7zip, Blender, Furmark, RealBench, Gears 5, Dolphin Emulator, Blender, WPrime, GeekBench 6, 5.2, VeraCrypt, AIDA64, Handbrake, PassMark, 3DMark, UserBenchmark, World of Tanks enCore Benchmark, MATLAB.
   Gaming performance of processors in:

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

After looking at the data of joint benchmarks and videos, you already be able to understand which processor is better to buy for gaming Intel Core i5-11400 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 i5-11400

55%

Gaming performance
Summary result of all game benchmarks.

Core i7-1255U

54%

Core i5-11400

55%

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

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	90.7
Red Dead Redemption 2	74.6	77.2
DOOM Eternal	54.0	56.0
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 computers that were in the comparisons not only did they have 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. 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 i5-11400

119%

To make a finishing choice 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 Core i7-1255U is more energy efficient than the Core i5-11400 as it consumes less power: 15W vs. 65W. Power consumption is particularly 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

Let's say you want to use the processor not only for gaming, but also for streaming, machine learning, video editing or video rendering, programming, then the main parameter for you is its performance in multi-threaded mode. In this mode, the CPU includes 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. Since there are still many programs that use only one core to work, and all the benefit 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 i5-11400
Cinbench 15 Single-core	230	182
Cinbench 15 Multi-core	1691	1743
Cinbench 20 Single-core	554	425
Cinbench 20 Multi-core	3839	3904
Cinbench 23 Single-core	1297	1110
Cinbench 23 Multi-core	12654	10336

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

	Intel Core i7-1255U	Intel Core i5-11400
Single-Core	3035	2476
Multi-Core	17715	18858

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

	Intel Core i7-1255U	Intel Core i5-11400
Single-Core	1251	2332
Multi-Core	6947	10287

Comparison of specifications

In the specification comparison table, the most helpful will be the release date of the processor and the possibility of overclocking it. The later the processor is released, 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, increasing its performance, then it will continue to maintain maximum FPS even in new games. The savings are obvious! It turns out that you do not need to buy a new CPU to enjoy the games any longer.

	Intel Core i7-1255U	Intel Core i5-11400
Announcement date	January 07, 2022	January 20, 2021
Type	Laptop	Desktop
Socket	FCBGA1744	FCLGA1200
Core name	Alder Lake-U	Rocket Lake
Architecture	x86	x86
Generation	12	11
Turbo Frequency	4.7 MHz	4.4 MHz
Frequency	1.7 MHz	2.6 MHz
Cores	10	6
Threads	12	12
Bus rate	8 GT/s	8 GT/s
Bit	64	64
Lithography	10 nm	14 nm
Transistors count	9800 millions	5400 millions
Power consumption (TDP)	15 W	65 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	DDR4-3200
Max. Memory	64 Gb	128 Gb
Memory Frequency		3200
Memory bandwidth	45.8 GB/s	50 GB/s
L1 cache
L2 cache		3 MB
L3 cache	24 MB	12 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 i5-11400 is 34% better than Core i7-1255U in terms of CPU frequency. Another difference is that Core i7-1255U has 4 more core than Core i5-11400. 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: 13
The number of parameters for which Intel Core i5-11400 is better: 21
However, it should be realized that the summary data in the table above do not mean that taking them into account you should completely trust a simple comparison of these figures. Better to watch the testing video and read the reviews of real owners of Intel Core i7-1255U and Intel Core i5-11400 before making a decision which of the processors to buy for gaming.

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 i5-11400 - all data

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

• Intel Core i5-11400 specs and review.