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AMD Ryzen 9 5900X 12-core, 24-Thread Unlocked vs Intel Core i7-8700K Desktop Processor 6 Cores up

Updated August 2026 — AMD Ryzen 9 5900X 12-core, 24-Thread Unlocked wins on cores/threads and overclocking, Intel Core i7-8700K Desktop Processor 6 Cores up wins on graphics and compatibility.

The AMD Ryzen 9 5900X offers superior performance and multitasking capabilities compared to the Intel Core i7-8700K, making it the better choice for high-end users.

Why AMD Ryzen 9 5900X 12-core, 24-Thread Unlocked is better

Core Count

12 cores vs 6 cores

Thread Count

24 threads vs 12 threads

Gaming Performance

Over 100 FPS in popular games

Why Intel Core i7-8700K Desktop Processor 6 Cores up is better

Price

$185.37 vs $368.00

Power Consumption

95W vs higher

Compatibility

Compatible with Intel 300 Series chipsets

Overall score

AMD Ryzen 9 5900X 12-core, 24-Thread Unlocked
92
Intel Core i7-8700K Desktop Processor 6 Cores up
75

Specifications

SpecAMD Ryzen 9 5900X 12-core, 24-Thread UnlockedIntel Core i7-8700K Desktop Processor 6 Cores up
Cores126
Threads2412
Max Boost4.8 GHz4.7 GHz
Cache70 MB12 MB
Price$368.00$185.37

Dimension comparison

AMD Ryzen 9 5900X 12-core, 24-Thread UnlockedIntel Core i7-8700K Desktop Processor 6 Cores up

Overview of the AMD Ryzen 9 5900X and Intel Core i7-8700K

When comparing the AMD Ryzen 9 5900X to the Intel Core i7-8700K, it's clear that these two processors cater to different segments of the market. The Ryzen 9 5900X is a high-end CPU with 12 cores and 24 threads, priced at $368.00, while the i7-8700K offers 6 cores and 12 threads at a significantly lower price of $185.37. The fundamental differences in their architecture and intended use lead to distinct performance outcomes.

The Ryzen 9 5900X is marketed as "the world's best gaming desktop processor," emphasizing its ability to deliver elite gaming performance, often exceeding 100 FPS in popular titles. In contrast, the i7-8700K, while respectable, does not match the sheer processing power of its AMD counterpart, making it more suitable for everyday tasks and moderate gaming.

Performance Comparison

The AMD Ryzen 9 5900X significantly outperforms the Intel Core i7-8700K in terms of core and thread count. With 12 cores and 24 threads, the Ryzen 9 can handle intensive tasks such as gaming at high settings, video rendering, and complex simulations with ease. The 4.8 GHz Max Boost frequency provides additional performance headroom, especially for overclocking enthusiasts.

On the other hand, the i7-8700K, with its 6 cores and 12 threads, offers a maximum turbo frequency of 4.7 GHz, which is competitive but limits its performance under heavy loads. While the Intel processor is capable of delivering solid gaming experiences, it simply cannot match the multitasking capabilities and raw power of the Ryzen 9 5900X.

Gaming Experience

In terms of gaming, the AMD Ryzen 9 5900X is designed to provide an unparalleled experience, boasting the ability to deliver over 100 FPS in the world's most popular games. This performance is especially beneficial for gamers who want to experience smooth gameplay at high resolutions and settings.

The Intel Core i7-8700K, while still a capable gaming CPU, is more suited for casual gamers or those who do not require the highest performance levels. It can handle most games adequately but may show its limits in scenarios where maximum performance is crucial. Thus, if gaming is your primary focus, the AMD processor is the superior choice.

Cooling Requirements

The AMD Ryzen 9 5900X does not come with a stock cooler, and a high-performance cooler is recommended to maintain optimal temperatures, especially when overclocking. The maximum operating temperature is listed at 90°C, emphasizing the need for efficient cooling solutions to prevent thermal throttling during demanding tasks.

In contrast, the Intel Core i7-8700K also requires adequate cooling but may be less demanding in terms of cooling requirements due to its lower core count. However, both processors benefit from good cooling solutions to ensure sustained performance during extended use, particularly in gaming scenarios.

Compatibility and Upgradability

The AMD Ryzen 9 5900X utilizes the advanced Socket AM4 platform, supporting PCIe 4.0, which provides faster data transfer rates for compatible hardware. This makes the Ryzen 9 a future-proof choice for users looking to build a high-performance system with the latest technology.

The Intel Core i7-8700K is compatible only with motherboards based on Intel 300 Series chipsets. While still a solid choice, it may not offer the same level of future-proofing as the Ryzen 9, especially with emerging technologies like PCIe 4.0. Users should consider their long-term needs when deciding between these processors.

Price Analysis

The AMD Ryzen 9 5900X is priced at $368.00, making it a premium option in the CPU market. In comparison, the Intel Core i7-8700K is about 50% cheaper at $185.37. This substantial price difference reflects the performance disparity and target audience for each processor. For budget-conscious consumers, the i7-8700K may present a more attractive option, but it sacrifices performance, especially in demanding applications.

For users looking for the best performance per dollar in high-intensity tasks, the Ryzen 9 may justify its higher price. However, those who primarily engage in light gaming or general computing tasks may find the i7-8700K to be a more economical choice.

Customer Insights and Popularity

While there isn't specific sales rank data provided for either processor, the AMD Ryzen 9 5900X is promoted as the "world's best gaming desktop processor," which likely contributes to its popularity among high-performance users. The Intel Core i7-8700K has a long-standing reputation in the gaming community and is well-regarded for its performance, making it a popular choice for many gamers.

Both processors have their dedicated followings; however, the AMD Ryzen 9 5900X's cutting-edge technology and performance capabilities may give it an edge in popularity among serious gamers and content creators.

Which should you buy?

In conclusion, the choice between the AMD Ryzen 9 5900X and the Intel Core i7-8700K ultimately depends on your specific needs and budget. If you are seeking top-tier performance for gaming, content creation, or multitasking, the Ryzen 9 5900X is the clear winner, despite its higher price. However, if you are looking for a lower-cost option that still offers solid performance for general use and moderate gaming, the Intel Core i7-8700K is a viable choice. Assess your requirements and budget to make the best decision for your next CPU purchase.