To help people make a choice between AMD’s high-end and low-end CPUs, we’ve put together a quick review of the Ryzen 9 3900X and 5900X. How do they perform in games? What kind of video cards are recommended to go along with them? Find out in this article!

The “5900x vs 3900x gaming” is a comparison of AMD’s new Ryzen 9 series processors. The review will compare the performance and features of the two chips.

AMD Ryzen 9 5900X vs Ryzen 9 3900X Performance Review



Today, we’ll evaluate the performance of the AMD 3900X Ryzen 9 Matisse and AMD 5900X Ryzen 9 Vermeer CPUs. In the high-end desktop (HEDT) performance PC enthusiast world for CPUs, this is a 12-core vs 12-core head-to-head comparison of the Zen 2 and Zen 3. In addition, we’ve included the Intel Core i9-11900K to examine how these three processors stack up. We’ll explore how performance differs from generation to generation when switching from Ryzen 9 3900X to Ryzen 9 5900X, as well as how Intel’s Rocket Lake-S 11th Gen enthusiast CPU fits into all of this.

AMD’s Ryzen 9 5900X processor was first announced in November of 2020, however availability remained limited for a long thereafter. It was a scenario similar to what we’ve seen with graphics cards and price gouging, scalping, and everything else that’s been in the press recently. The Ryzen 5000 series CPUs are considerably easier to come by these days. While most people purchase somewhere in the middle, many say that the Ryzen 9 5900X maintains the “sweet spot” at the top, since it is much less expensive than the Ryzen 9 5950X while giving similar performance for the majority of users.

It’s a fantastic moment to examine performance on the Ryzen 9 5900X now that it’s been a full year since its debut. Many new BIOS and AMD AGESA upgrades have been released since its inception, including chipset driver updates and driver and stability updates in general. In other words, the Ryzen 9 5900X is going to operate at its best today. Today, we’ll look at the performance of the Ryzen 9 5900X and compare it to other CPUs, including its immediate predecessor.

Specifications for AMD Ryzen 9 5900X


The Ryzen 9 5900X is a Zen 3-based CPU with 12 cores and 24 threads. The L3 cache on the Ryzen 9 5900X is 64MB, while the L2 cache is 6MB. It features a 3.7GHz base clock and a 4.8GHz maximum boost clock. The CPU’s characteristics are almost similar to those of its predecessor, with the exception of the base frequency, which has increased by 200MHz for both the base and maximum boost clock values.

Aside from that, the only difference between the Ryzen 9 3900X and the 5900X is their architecture. Zen 2 is the first, while Zen 3 is the third. We won’t go through the inner workings of the CPU architecture in this review for the sake of brevity. More information on the Zen3 microarchitecture advancements may be found in our coverage on the subject here.

Specification Ryzen 9 5900X Ryzen 9 3900X
Architecture Vermeer / Zen 3 Matisse / Zen 2
Node for processing CCD 7nm/12nm IOD CCD 7nm/12nm IOD
Cores/Threads 12/24 12/24
Cache L2+L3 L2/64MB L3 (L2/64MB L3 (6MB L2/64MB L3)) 6MB L2/64MB L3
Frequency of the base 3.7GHz 3.8GHz
Frequency of Maximum Boost 4.8GHz 4.6GHz
TDP 105W 105W
MSRP $549 $499

The CCD / CCX complicated reconfiguration is one of the architectural enhancements I’ll describe. The previous 3900X CPU featured two CCDs, each with four CCX complexes. Instead of four cores, each CCX complex had three. Internal latency is decreased because to the improved CCD arrangement, which was one of the concerns with prior version Ryzen CPUs in certain workloads. Games were initially sensitive to crossing the CCX limits inside each CCD. This isn’t an issue with Zen 3 CPUs since there aren’t any CCX borders for data to cross.

The Ryzen 9 5900X, like its predecessor, features two CCDs. Again, instead of eight cores per CCD, as with the Ryzen 9 3950X or 5950X, there are only six cores per CCD. Surprisingly, the Ryzen 9 5900X has been around long enough to go up against Intel’s Core i9 10900K, 11900K, and now 12900K processors.

Installation & Packaging

The Ryzen 9 5900X’s packaging is almost similar to that of previous CPUs, with just minor modifications to the artwork. However, unlike the 3900X, it does not include a CPU thermal solution, therefore the package is similar to that of the Ryzen 9 3950X in terms of size, as opposed to the 3900X, which included a heat sink and fan. Many users felt deceived by the absence of a cooling solution included with this CPU in terms of value. AMD’s approach, on the other hand, wasn’t optimal for the 3900X and was basically a no-go for the 3950X. Sure, you could use it, but by choosing it over a decent AIO or at the the least an aftermarket high-end air cooler, you were likely sacrificing performance.

Because AMD’s socket AM4 is used by the Ryzen 5000 series CPUs, there are pins on the bottom of the socket. The motherboard socket is a zero insertion force type socket, and installation is simple thanks to a mark on the pin array on the CPU that indicates where pin one is. There is a similar mark on the socket, and the CPU should fall into place with no effort necessary when correctly aligned. Close the locking lever once it’s in position, and all you’ll need now is your thermal solution. For that, you’ll need to consult the manufacturer’s instructions for whichever cooling device you’re intending to use.

Installing your Ryzen 9 5900X CPU isn’t particularly difficult or unusual. The only catch is that you’ll almost certainly need to flash your motherboard’s BIOS before installing the real CPU. Some motherboards do have the ability to update the BIOS without the CPU inserted, however these are usually among the most costly models available. The ASRock X570 CREATOR motherboard was utilized for our testing, and it needed flashing with a Ryzen 3000 series CPU (or earlier) installed.

There were no other difficulties to mention while putting the 5900X CPU into our test system other from that one hitch. On some computers, the BIOS must be changed to get things to operate correctly, but this was not the case here.

Frequencies of CPUs

Ryzen CPUs, as previously indicated, have a base clock frequency and a maximum boost clock frequency. If the thermal conditions are ideal and the CPU is fully loaded, the former is the least clock speed you may anticipate. When the CPU is idle, the clocks may decrease considerably to conserve power, as is the case with any contemporary CPU.

On a single core, however, the maximum boost frequency of 4.8GHz is theoretically attainable with single-threaded or weakly threaded workloads. When the CPU is conducting massively multithreaded operations, you may see frequencies that are much higher than the base frequency. It’s probable that you’ll observe rates of above 4.0GHz in certain circumstances. The highest boost clock frequency will be 4.8GHz, but the ceiling will be lower.

To put it simply, everything between the base clock and the highest rated boost clock is fully dependent on a number of factors, including workload, temperature, and voltage conditions. Between the base clock and the highest rated boost clock frequencies, clock speeds may be seen.

Watch This Video-

The “3900x vs 5900x benchmark” is a comparison of the performance of AMD Ryzen 9 3900X and AMD Ryzen 9 5900X. The review shows that the 5900x outperforms its predecessor by a significant margin.

Frequently Asked Questions

Is it worth upgrading from Ryzen 3900x to 5900X?

A: Unless you are an extreme gamer, or work in a field such as video editing or rendering that requires specific hardware then the Ryzen 3900x is more than enough for your needs.

Is the AMD Ryzen 9 5900X worth it?

A: Yes, the AMD Ryzen 9 5900X is a great CPU for gaming. The Intel i9 9900K is an amazing CPU as well.

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