best cpu for 4090
They are Ideal processors for maximizing performance with RTX 4090 graphics card. RTX 4090 is undoubtedly one of the best GPUs out there at the moment. However, having this GPU alone will be insufficient to run today’s games at their best. To play games at their best, you should have a powerful CPU paired with your GPU.
There are a lot of powerful CPUs that will make the RTX 4090 even more powerful than it already is. Good processors will let your RTX 4090 run the latest games and most demanding apps smoothly. This CPU will ensure that the best RTX 4090 games and software are going to run without any problems, even though it might cost you an arm and a leg.
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Intel Core i9-13900K

Intel Core i9-13900K Desktop Processor 24 cores
The Intel iCore i9-13900K is our recommendation for the RTX 4090 when it comes to top-tier CPUs. Intel has provided dozens of great CPUs over the last few years, but in our opinion, it’s the best CPU for this video card.
Raptor Lake, also known as the 13th-generation Core-series, is led by the i9-13900K. Due to the fact that Intel will eventually move to the Meteor Lake architecture, the i9-13900K serves as the pinnacle of Intel’s chip design as of this writing. In view of just how power-hungry the RTX 4090 is, the i9-13900K is quite generous in power. The i9-13900K offers an incredible amount of processing power, allowing you to enjoy your games at their full potential at all times.
Considering that it has 24 cores and 32 threads, the i9-13900K is a potent CPU that outperforms all chips currently on the market. In both single and multi-core workloads, the i9-13900K performs well, which makes it perfect for games like today’s latest titles. In the next year or so, I doubt there will be another CPU that can outperform the i9-13900K.
Compared to its predecessor, the i9-13900K offers dramatic improvements in single-core performance. Benchmark tests have revealed an improvement of 15% on the i9-13900K. Multi-core performance is up to 41% higher, which is a significant improvement over its predecessor. There’s also the benefit of the i9-13900K compatibility with a wider range of motherboards, so an upgrade isn’t always necessary.
Despite it being pricey, the i9-13900K is arguably one of the best CPUs on the market right now if you want a CPU that matches the power needed for the RTX 4090.
Pros
Performance unmatched
Intel’s CPUs have improved greatly over the past few years
Dependable and fast
Cons
Very pricey
Specification
The Intel 600, 700 and LGA1700 chipsets are compatible with these sockets and chipsets.
Eight P-cores and sixteen E-cores compose the 24 processor cores
There is an onboard graphics processor called Intel UHD Graphics 770
The maximum speed of DDR5 memory is 5600, while that of DDR4 memory is 3200
The CPU runs at a frequency of 5.8GHz
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Ryzen 9 7950X

AMD Ryzen™ 9 7950X 16-Core, 32-Thread Unlocked Desktop Processor
There’s no question AMD’s Ryzen CPUs are going to be Intel’s main competitor. While Intel’s CPUs are geared toward general use, AMD’s Ryzen CPUs are designed primarily for gaming. Consequently, the AMD Ryzen 9 7950X is the best CPU from AMD that can work with the RTX 4090.
It’s a great CPU in its own right. It’s one of the best CPUs from AMD at the moment. In terms of single-core performance, the Ryzen 9 7950X has 16 cores and 32 threads and a maximum boost clock of 5.7 GHz, which makes it extremely formidable. As compared to previous generations of AMD Ryzen chips, the Ryzen 9 7950X also features a new architecture built on a 5 nm chip, which allows for higher IPC. The RTX 4090 is definitely a great match for it, as it is AMD’s current top-tier chip.
15% improvement
Ryzen 9 7950X has a 15% improvement in gaming performance as compared to its predecessor. You’re going to get a lot of power in a chip with the RTX 4090. With such power, you’re going to be able to play most games easily. The reliable power isn’t without the right supporting features, however. Even if you play the most popular, in-demand games on the market right now, you won’t have to worry about the Ryzen 9 7950X overheating. If you choose the right cooling system, the Ryzen 9 7950X runs pretty well, making it incredibly reliable.
Compared to its predecessor, the Ryzen 9 7950X is also 21% faster in single-threaded work and 45% faster in threaded work. Moreover, the Ryzen 9 7950X outperforms the i9-12900K in a variety of performance aspects. This sets a new standard for high-end mainstream processors.
Despite being a little less powerful than the Intel i-13900K, the Ryzen 9 7950X brings next-level performance to high-end gaming GPUs including the RTX 4090.
Pros
An enormous improvement over its predecessor
Gaming-friendly
Cons
Cools strongly
Specification
The AMD Socket AM5 and its compatibility with chipsets
The CPU has 16 cores (P-cores plus E-cores)
The Radeon graphics onboard the processor
DDR5 memory speed maximum
5.7 GHz CPU frequency
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Ryzen 9 7900X

AMD Ryzen™ 9 7900X 12-Core, 24-Thread Unlocked Desktop Processor
In the event that the Ryzen 9 7900X is out of your price range, you should consider the Ryzen 9 7000X instead. While it might not provide the same level of performance as the Ryzen 9 7900X, it is still a very good chip.
In terms of overall performance, the Ryzen 9 7000X is expected to be a bit lacking compared to the Ryzen 9 7900X. The RTX 4090 still has a decent output when paired with the GPU, so you won’t have any problems playing the latest games.
The Ryzen 9 7000X is an excellent alternative to the Ryzen 9 7900X, as it is much more expensive and a bit more difficult to obtain. While Ryzen 9 7900X does not have any serious performance issues, its overall appeal lies in its affordability and accessibility.
There are only 12 cores and 24 threads on the Ryzen 9 7000X, which means its performance is definitely lower than the Ryzen 9 7900X, but it doesn’t make a huge difference. Games will still load quickly regardless. In addition, most games are also going to be compatible with the CPU, so you do not have to worry about any game requirements. However, unlike the Ryzen 9 7900X, the Ryzen 9 7000X cannot match the i9-12900K in any way. The performance of the chip does, however, match that of Intel, making it an excellent alternative.
Although it is a generation lower than the Ryzen 9 7900X, the Ryzen 9 7000X still works well with RTX 4090, as it is still very capable of handling other workloads. Overall, it’s still a great CPU. It’s still a great CPU overall. It’s still a great CPU overall.
Pros
Various workloads can be handled with enough cores and threads
AMD’s top CPUs are more affordable
Cons
Ryzen 9 7950X is more powerful
Specification
Compatible Chipsets and RadeonTM Graphics Sockets
The number of processor cores (P-cores and E-cores) is 12
Radeon graphics on the onboard processor
DDR5-5200, DDR5-3600 Maximum Memory Speed
4.7 GHz is the CPU frequency
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Ryzen 7 5800X3D

You’ll have to buy other components besides the RTX 4090 if you’re on a budget. If you choose a Ryzen 7 5800X3D, you will save a lot of money as well.
Ryzen 7 5800X3D was AMD’s top-tier chip from the 12th generation of chips. When it was released during that time, it decimated the competition. A gaming processor like the Ryzen 7 5800X3D is considered one of the best out there in terms of gaming performance, making it a great match for a GPU such as the RTX 4090. Due to its reputation as an affordable gaming CPU, it is well deserved to make this list of the best RTX 4090 processors. In today’s CPU market, Ryzen 7 5800X3D still holds its own for its speed, reliability, and power.
When it comes to Ryzen 7 5800X3D, the Ryzen 7 5800X3D is a wonder. Not only does the chip perform well when it comes to gaming, but it even outperforms the Intel i9-12900K, which is much more expensive. In spite of its lower specifications, Ryzen 7 5800X3D can handle gaming, content creation, and professional work very well. Ryzen 7 5800X3D is a very good budget-friendly option if you want to use RTX 4090 in your PC. Since the price is marked down dramatically today, it is the most cost-effective option.
Due to its 3D V-cache instability at higher clock speeds, the Ryzen 7 5800X3D has lower core speeds, with 3.4 GHz as its base and 4.5 GHz as its max. The only downside is the chip’s restriction on overclocking. Despite its age, the Ryzen 7 5800X3D is still an excellent processor for your RTX 4090. It’s definitely a must-have for those on a budget, so don’t forget about it.
Pros
Best budget-friendly option
Amazing gaming performance
Cons
No overclocking available
Specification
The AMD 300 Series, AMD 400 Series, and AMD 500 Series chipsets are compatible with the sockets as follows:
There are 8 processor cores (P-cores and E-cores)
Graphics onboard AMD Ryzen processor
Memory speed maximums DDR4-3200, DDR4-2933, DDR4-2667
A 4.5GHz CPU frequency
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Ryzen 7 5800X3D

AMD Ryzen™ 7 5800X3D 8-cor
A good alternative lies within the i7-2700K, which is also a CPU made by Intel. The i9-12900K is a bit more expensive than the i7-2700K, but it is still a good alternative when it comes to budget. Also related: best cpu under 300
Since it is the only generation i7 processor currently on the market, the i7-2700K should speak volumes about its performance. Of course, the i7-2700K is underpowered compared to the likes of the Ryzen 9 7900X. While the i7-2700K has half as many cores as the Ryzen 9 7900X, its dependability is still quite high, and the performance with the RTX 4090 is still quite good. i7-2700K will still provide you with fast and smooth performance for your games and software, so don’t worry about it.
Also, the i7-2700K is less expensive than AMD’s top Ryzen CPU. In spite of the fact that the Ryzen 9 7900X has better specifications than this CPU, many reviews claim that the i7-2700K is still an excellent choice to play games with the RTX 4090, despite the specs differences. With the i7-2700K as the CPU, you don’t have to worry much about PC requirements for today’s games. Its performance isn’t comparable to a high-end CPU, but it’s a good choice if you want an affordable Intel CPU.
In conclusion, the i7-2700K is one of the best budget-friendly options available from Intel right now because it still stands up well against other CPUs on the market today. In return for what it lacks in specs, the RTX 4090 makes up for it in performance, which should be sufficient for your gaming needs.
Pros
CPUs with the best price/performance ratio
Performance of great quality
Cons
Competitors are more powerful
Specification
Intel® HD Graphics 3000 chip set compatibility and socket
3.6P-cores and 2.7E-cores (P+E)
The Intel® HD Graphics 3000 is the onboard graphics processor
DDR4 DDR5 Memory Speed Maximum
3.90 GHz CPU Frequency
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Final thoughts on best cpu for 4090
I have found that the Intel Core i9-11900K and AMD Ryzen 9 5950X are two of the best CPUs for the Intel Core i9-11900K and AMD Ryzen 9 5950X, respectively. It depends on your specific requirements and budget whether one is better for you. They both provide excellent performance for both gaming and productivity tasks.
On the one hand, the Intel Core i9-11900K is the best choice for single-threaded performance, while the AMD Ryzen 9 5950X is more suitable for multi-threaded tasks due to its increased number of cores and threads. In addition, the Ryzen 9 5950X offers a better value for the price compared to the Core i9-11900K, since it delivers more performance per dollar.
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