10
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$434.00 +9%
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Gaming Performance Comparison

Recommended System Requirements
Game Core i9-9900K 8-Core 3.6GHz Ryzen 5 2600X 6-Core 3.6GHz
Cyberpunk 2077 58% 46%
Assassins Creed: Valhalla 43% 27%
Call of Duty: Black Ops Cold War 45% 29%
Mafia: Definitive Edition 55% 42%
eFootball PES 2021 55% 42%
Genshin Impact 68% 59%
FIFA 21 61% 49%
Death Stranding 49% 34%
Watch Dogs Legion 43% 27%
Microsoft Flight Simulator 52% 39%

In terms of overall gaming performance, the Intel Core i9-9900K 8-Core 3.6GHz is massively better than the AMD Ryzen 5 2600X 6-Core 3.6GHz 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 i9-9900K 8-Core was released less than a year after the Ryzen 5 2600X, 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 i9-9900K 8-Core has 2 more cores than the Ryzen 5 2600X. 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 Ryzen 5 2600X is more than enough for gaming purposes. However, if you intend on running a server with the Core i9-9900K 8-Core, it would seem to be a decent choice.

The Core i9-9900K 8-Core has 4 more threads than the Ryzen 5 2600X. Both the Core i9-9900K 8-Core and the Ryzen 5 2600X use hyperthreading. The Core i9-9900K 8-Core has 2 logical threads per physical core and the Ryzen 5 2600X has 2.

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 i9-9900K 8-Core and Ryzen 5 2600X are not from the same family of CPUs, so their clock speeds are by no means directly comparable. Bear in mind, then, that while the Core i9-9900K 8-Core and the Ryzen 5 2600X both have the same clock frequency, this is by no means an indicator that the two CPUs will provide the same level of performance. As such, we need to look elsewhere for more reliable comparisons.

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 Ryzen 5 2600X has a 1024 KB bigger L2 cache than the Core i9-9900K 8-Core, and the two CPUs have the same L3 cache size, so the Ryzen 5 2600X wins out in this area with its larger L2 cache.

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.

Both the Core i9-9900K 8-Core and the Ryzen 5 2600X have the same TDP of 95 Watts, but the Ryzen 5 2600X has a lower lithography size, and so will affect your yearly electricity bills less adversely.

CPU Core Details

CPU CodenameCoffee LakeZen+
MoBo SocketLGA 1151Socket AM4
Notebook CPUnono
Release Date30 Oct 201819 Apr 2018
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores8vs6
CPU Threads16vs12
Clock Speed3.6 GHzvs3.6 GHz
Turbo Frequency5 GHzvs4.2 GHz
Max TDP95 Wvs95 W
Lithography14 nmvs12 nm
Bit Width64 Bitvs54 Bit
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size512 KBvs-
L2 Cache Size2048 KBvs3072 KB
L3 Cache Size16 MBvs16 MB
Max Memory Size-vs64 GB
Memory Channels-vs4
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphics
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Max GPU Frequency-vs-
DirectX-vs-
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size-vs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Core i9-9900K 8-Core 3.6GHz 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 3.6GHz, which may go up to 4.7GHz using 8 cores with Turbo Boost, or up to 5.0GHz boost clock on a single or dual core. The i9-9900K has 16MB of L3 Cache. Among its many features, HyperThreading, Turbo Boost 2.0 and Virtualization are activated and the processor has its multiplier unlocked. This Core i9-9900K CPU offers the fastest gaming performance of any Intel CPU as of 2018, 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 Ryzen 5 2600X 6-Core 3.6GHz is a mid to high-range CPU based on AMD's 12nm Zen+ microarchitecture. It offers 6 physical cores (12 logical), initially clocked at 3.6GHz, which may go up to 4.2GHz using Turbo Boost. It has an unlocked multiplier, therefore, it can be overclocked using traditional methods. It has 16MB of L3 Cache. Level 3 cache is a static memory bank of a processor and it is used to feed it instructions. It has 3MB of L2 cache, 512KB per core. This processor also supports DDR4 based RAMs with maximum memory support of 64GB. It has a maximum Thermal Power Design of 95W. It is on par with competitor processors. Among its many features, Simultaneous Multithreading, Cool n Quiet, CoolCore Technology, Extended Frequency Range (XFX), Pure Power and Precision Boost are enabled. This CPU is likely to offer excellent computational performance and will not be the bottleneck in any modern gaming PC.