Select any two CPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Core i9-9900KS 8-Core 4.0GHz Core i5-9500T 6-Core 2.2GHz
Red Dead Redemption 2 43% 1%
Call of Duty: Modern Warfare 57% 25%
Cyberpunk 2077 51% 14%
Halo: Reach 76% 58%
Star Wars: Jedi - Fallen Order 37% 11%
Microsoft Flight Simulator 38% 10%
Borderlands 3 43% 1%
Detroit: Become Human 51% 14%
FIFA 20 59% 28%
eFootball PES 2020 53% 17%

In terms of overall gaming performance, the Intel Core i9-9900KS 8-Core 4.0GHz is massively better than the Intel Core i5-9500T 6-Core 2.2GHz when it comes to running the latest games. This also means it will be less likely to bottleneck more powerful GPUs, allowing them to achieve more of their gaming performance potential.

The Core i9-9900KS 8-Core was released less than a year after the Core i5-9500T 6-Core, and so they are likely to have similar levels of support, and similarly optimized performance when running the latest games.

Both CPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings (assuming they are accompanied by equivalently powerful GPUs).

The Core i9-9900KS 8-Core has 2 more cores than the Core i5-9500T 6-Core. 8 cores is probably excessive if you mean to just run the latest games, as games are not yet able to harness this many cores. The cores in the Core i5-9500T 6-Core is more than enough for gaming purposes. However, if you intend on running a server with the Core i9-9900KS 8-Core, it would seem to be a decent choice.

The Core i9-9900KS 8-Core has 10 more threads than the Core i5-9500T 6-Core. The Core i5-9500T 6-Core has one thread per physical core, whereas the Core i9-9900KS 8-Core uses hyperthreading and has 2 logical threads per physical core.

Multiple threads are useful for improving the performance of multi-threaded applications. Additional cores and their accompanying thread will always be beneficial for multi-threaded applications. Hyperthreading will be beneficial for applications optimized for it, but it may slow others down. For games, the number of threads is largely irrelevant, as long as you have at least 2 cores (preferably 4), and hyperthreading can sometimes even hit performance.

More important for gaming than the number of cores and threads is the clock rate. Problematically, unless the two CPUs are from the same family, this can only serve as a general guide and nothing like an exact comparison, because the clock cycles per instruction (CPI) will vary so much.

The Core i9-9900KS 8-Core and the Core i5-9500T 6-Core are from the same family of CPUs, and thus their clock speeds are directly comparable. With this in mind, it is safe to say that with a 1.8 GHz faster base clock rate, the Core i9-9900KS 8-Core manages to provide massively better performance than the Core i5-9500T 6-Core. What is more, the Core i9-9900KS 8-Core also manages to eke 1.3 GHz higher frequency when being stressed by CPU-intensive applications.

Aside from the clock rate, the next-most important CPU features for PC game performance are L2 and L3 cache size. Faster than RAM, the more cache available, the more data that can be stored for lightning-fast retrieval. L1 Cache is not usually an issue anymore for gaming, with most high-end CPUs eking out about the same L1 performance, and L2 is more important than L3 - but L3 is still important if you want to reach the highest levels of performance. Bear in mind that although it is better to have a larger cache, the larger it is, the higher the latency, so a balance has to be struck.

The Core i9-9900KS 8-Core has a 512 KB bigger L2 cache than the Core i5-9500T 6-Core, which means that it, at worst, wins out in this area, and at best, will provide superior gaming performance and will work much better with high-end graphics cards.

The maximum Thermal Design Power is the power in Watts that the CPU will consume in the worst case scenario. The lithography is the semiconductor manufacturing technology being used to create the CPU - the smaller this is, the more transistors that can be fit into the CPU, and the closer the connections. For both the lithography and the TDP, it is the lower the better, because a lower number means a lower amount of power is necessary to run the CPU, and consequently a lower amount of heat is produced.

The Core i5-9500T 6-Core has a 70 Watt lower Maximum TDP than the Core i9-9900KS 8-Core (though they were created with the same size 14 nm manufacturing technology). What this means is the Core i5-9500T 6-Core will consume significantly less power and consequently produce less heat, enabling more prolonged computational tasks with fewer adverse effects. This will lower your yearly electricity bill significantly, as well as prevent you from having to invest in extra cooling mechanisms (unless you overclock).

The Core i9-9900KS 8-Core and the Core i5-9500T 6-Core both have an on-board GPU, which means that they will be capable of running basic graphics applications (i.e., games) without the need for a dedicated graphics card.

For an in-depth GPU comparison, click on the GPU comparison icon that you can find throughout Game-Debate:

On-board GPUs tend to be fairly awful in comparison to dedicated cards from the likes of AMD or Nvidia, but as they are built into the CPU, they also tend to be cheaper and require far less power to run (this makes them a good choice for laptops). We would recommend a dedicated card for running the latest games, but integrated GPUs are improving all the time and casual gamers may find less recent games perform perfectly acceptably.

CPU Core Details

CPU CodenameCoffee Lake RCoffee Lake R
MoBo SocketLGA 1151LGA 1151
Notebook CPUnono
Release Date26 May 201923 Apr 2019
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores8vs6
CPU Threads16vs6
Clock Speed4 GHzvs2.2 GHz
Turbo Frequency5 GHzvs3.7 GHz
Max TDP105 Wvs35 W
Lithography14 nmvs14 nm
Bit Width64 Bitvs64 Bit
Max Temperature100°Cvs-
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size512 KBvs384 KB
L2 Cache Size2048 KBvs1536 KB
L3 Cache Size16384 MBvs9 MB
Max Memory Size-vs128 GB
Memory Channels-vs2
ECC Memory Supportnovsno
Comparison

CPU Graphics

GraphicsIntel UHD Graphics 630Intel UHD Graphics 630
Base GPU Frequency350 MHzvs350 MHz
Max GPU Frequency1150 MHzvs1150 MHz
DirectX12vs12
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size37.5 mm x 37.5 mm x 4.4 mmvs37.5mm x 37.5mm
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Intel Core i9-9900KS 8-Core 4.0GHz is a top-end CPU based on a refinement of the 14nm++ Coffee Lake microarchitecture. It offers 8 physical cores (16 logical), initially clocked at 4.0GHz, which may go up to 5.0GHz using 8 cores with Turbo Boost. The i9-9900KS has 16MB of L3 Cache, 2MB L2 Cache and 512KB L1 Cache.. Among its many features, HyperThreading, Turbo Boost 2.0 and Virtualization are activated and the processor has its multiplier unlocked. Intel's i9-9900KS utilises an integrated Intel UHD Graphics 630 internal graphics processor initally clocked at 350 MHz with a maximum boost speed of 1.2GHz This Core i9-9900KS CPU offers the fastest gaming performance of any Intel CPU as of 2019, and will not be the bottleneck in any modern gaming PC. It will be able to play all modern games comfortably on ultra graphics performance at any supported resolution without being a hindrance to the accompanying GPU.The Core i5-9500T 6-Core 2.2GHz is a mid-range CPU based on a refinement of the 14nm++ Coffee Lake microarchitecture. The 'T' suffix determines this CPU is a low-power variant. It offers 6 physical cores (6 logical), initially clocked at 2.2GHz, which may go up to 3.7GHz using 6 cores with Turbo Boost. The i5-9500T has 9MB of L3 Cache. This chip supports up to 128GB DDR-2666 MHz memory and features Intel UHD 630 integrated graphics. Among its many features, Turbo Boost 2.0, Optane Memory Support, and Virtualization are activated, and its multiplier is not unlocked. This Core i5-9500T CPU offers above average gaming performance and should not be the bottleneck in any modern gaming PC in 2019. It will be able to play all modern games at 60fps comfortably on ultra graphics performance at any supported resolution without being a hindrance to the accompanying GPU. However, performance may become bottlenecked if playing at 144Hz.

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