Intel Core i5-1245U vs Intel Core i7-7820X

Processor comparisons   10-01-2022
   If you are thinking about choosing a processor, you will be able to make a decision by looking at the Intel Core i5-1245U vs Intel Core i7-7820X tests and understand which is better for games or normal use for rendering, streaming, programming, machine learning, video editing. Here you can find all information from different benchmarks or real streaming and video editing tests. A careful review of all the specifications, so that it can be easier to understand, is made by the table.
   From the comparison video, you can get the results of parallel examination in special test applications like Prime95, 3DMark, GeekBench 6, 5.2, PassMark, World of Tanks enCore Benchmark, Furmark, VeraCrypt, UserBenchmark, SuperPi, Gears 5, Dolphin Emulator, MATLAB, PCMark 10, Cinebench 23 (20, 15), 7zip, Blender, DaVinci Resolve Studio, WPrime, AIDA64, RealBench, Blender, Handbrake.
   And how good the processors are in games:

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

After reading the results of all benchmarks and videos, you can already make an informed decision about which processor is better to buy for gaming Intel Core i7-7820X or Intel Core i5-1245U.

Summary benchmark results

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

Core i5-1245U

55%

Core i7-7820X

55%

Gaming performance
Summary result of all game benchmarks.

Core i5-1245U

53%

Core i7-7820X

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

Gaming benchmark

Fortnite	94.9	98.5
Valorant	107.9	111.9
Cyberpunk 2077	60.4	62.7
Apex Legends	101.4	105.2
Call of Duty Warzone	80.9	83.9
Overwatch	87.4	90.6
Red Dead Redemption 2	74.4	77.2
DOOM Eternal	53.9	55.9
Warzone	84.2	87.3
Assassin's Creed	90.6	94.0
Valheim	89.5	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 video cards and different amounts of RAM. 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. 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 i5-1245U

272%

Core i7-7820X

32%

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 i5-1245U 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. Also, when choosing a processor cooling system, you need to know its TDP. It is necessary to count 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 rendering or video editing, streaming, programming, then the main parameter for you is its performance in multi-threaded mode. In this mode, to achieve maximum performance, the processor includes all cores and threads that it has. You will find out this data from the benchmark tables below. Before you take into account the data from these tests, be sure to find out whether 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 work, 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 i5-1245U	Intel Core i7-7820X
Cinbench 15 Single-core	225	197
Cinbench 15 Multi-core	1657	1887
Cinbench 20 Single-core	543	498
Cinbench 20 Multi-core	3762	5155
Cinbench 23 Single-core	1271	1246
Cinbench 23 Multi-core	12401	12165

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

	Intel Core i5-1245U	Intel Core i7-7820X
Single-Core	2974	2502
Multi-Core	17361	17305

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

	Intel Core i5-1245U	Intel Core i7-7820X
Single-Core	1226	1357
Multi-Core	6808	10261

Comparison of specifications

In the specification comparison table, the most useful will be the the possibility of overclocking it and release date of the processor. 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 can be said about overclocking. If the processor can be overclocked, thereby increasing its performance, then it will continue to maintain maximum FPS even in new games. The economy are obvious! Accordingly, there is no longer a need to buy a new CPU to enjoy the games any longer.

	Intel Core i5-1245U	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	4.4 MHz	4.3 MHz
Frequency	1.6 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 55% better than Core i5-1245U in terms of CPU frequency. Another difference is that Core i5-1245U 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 i5-1245U is better: 14
The number of parameters for which Intel Core i7-7820X is better: 19
Although it should be understood that all the figures that you have looked at here do not mean that taking them into account you should totally trust a simple comparison of these numbers. Better to watch benchmarks video and read the opinion of real owners of Intel Core i5-1245U and Intel Core i7-7820X before deciding which of the processors to buy for gaming.

Intel Core i5-1245U - all data

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

• Intel Core i5-1245U 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.