Intel Core i5-1245U vs Intel Core i9-9900K

Processor comparisons 10-01-2022

   Let's say there are difficulties with the choice of a CPU, you will solve them by reading the detailed tests Intel Core i5-1245U vs Intel Core i9-9900K and decide which is better for games or simple use for programming, streaming, video editing, machine learning, rendering. Here is useful information from different benchmarks or real video editing and streaming tests. A step-by-step analysis of all the specifications, so that it can be easier to understand, is made by the table.
   From the video comparison, you can get the results of joint testing in software tests such as PassMark, World of Tanks enCore Benchmark, SuperPi, PCMark 10, 3DMark, Prime95, Blender, DaVinci Resolve Studio, Dolphin Emulator, Cinebench 23 (20, 15), Blender, Furmark, MATLAB, VeraCrypt, Handbrake, RealBench, GeekBench 6, 5.2, 7zip, WPrime, UserBenchmark, AIDA64, Gears 5.
   Gaming performance of CPUs in:

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

After looking at the data of joint benchmarks and videos, you already be able to know which CPU is better to buy for gaming Intel Core i9-9900K 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 i9-9900K

55%

Gaming performance
Summary result of all game benchmarks.

Core i5-1245U

53%

Core i9-9900K

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

Gaming benchmark

Fortnite	94.9	98.2
Valorant	107.9	111.6
Cyberpunk 2077	60.4	62.5
Apex Legends	101.4	104.9
Call of Duty Warzone	80.9	83.7
Overwatch	87.4	90.4
Red Dead Redemption 2	74.4	77.0
DOOM Eternal	53.9	55.8
Warzone	84.2	87.0
Assassin's Creed	90.6	93.7
Valheim	89.5	92.6

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 comparisons not only were the equipped with different amounts of RAM and different video cards. 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 i9-9900K

45%

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 i5-1245U is more energy efficient than the Core i9-9900K as it consumes less power: 15W vs. 95W. 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

For example you plan to use the processor not only for gaming, but also for streaming, video editing or video rendering, programming, machine learning, then first of all you need to pay attention to the performance in multi-threaded mode. In this mode, to achieve maximum performance, 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 check whether the program you are going to use on your computer supports multi-threaded mode. Because there are still many programs that can use only one core to work, and all the advantages 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 i5-1245U	Intel Core i9-9900K
Cinbench 15 Single-core	225	219
Cinbench 15 Multi-core	1657	2245
Cinbench 20 Single-core	543	518
Cinbench 20 Multi-core	3762	4995
Cinbench 23 Single-core	1271	1284
Cinbench 23 Multi-core	12401	12450

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

	Intel Core i5-1245U	Intel Core i9-9900K
Single-Core	2974	2947
Multi-Core	17361	18753

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

	Intel Core i5-1245U	Intel Core i9-9900K
Single-Core	1226	1301
Multi-Core	6808	9986

Comparison of specifications

In the specification comparison table, the most helpful will be the the possibility of overclocking it and release date of the processor. The later the processor is released, the longer it will last in your computer. And the easier it will be to upgrade the system later. The same can be said about overclocking. When the processor can be overclocked, increasing its performance, then it will continue to maintain maximum FPS even in the newest 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 i5-1245U	Intel Core i9-9900K
Announcement date	January 07, 2022	October 01, 2018
Type	Laptop	Desktop
Socket	FCBGA1744	FCLGA1151-2
Core name	Alder Lake-U	Coffee Lake
Architecture	x86	x86
Generation	12	9
Turbo Frequency	4.4 MHz	5 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	8600 millions
Power consumption (TDP)	15 W	95 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	41.6 GB/s
L1 cache
L2 cache
L3 cache	24 MB	16 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 i9-9900K 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 i9-9900K. 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: 11
The number of parameters for which Intel Core i9-9900K is better: 22
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 numbers. Be sure to watch the video tests and read the opinion of of people who bought Intel Core i5-1245U and Intel Core i9-9900K before making a decision which processor to buy for gaming and which not.

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 i9-9900K specs and review.