Ryzen 9 7900X vs. Ryzen 9 7900: Which One is better?

Ryzen 9 7900X vs. Ryzen 9 7900: Which One is better?

In the battle for flagship CPU performance, Intel appears to lead the pack with its latest 14th generation processors, notably the Intel Core i9-14900K. However, the corresponding KS variant tailored for extreme overclockers and PC enthusiasts is expected to hit the market soon. On the flip side, AMD, with its Ryzen 7000 series, has clearly demonstrated a trajectory towards positive change, marking a significant technological leap with the transition to LGA, 5nm architecture (now 4nm with Ryzen 8000), and, of course, compatibility with the latest PCIe 5.0 protocol and DDR5 RAM.

While the pinnacle of the Ryzen 7000 series lies in the Ryzen 9 7950X and Ryzen 9 7950X3D models, the Ryzen 9 7900X and Ryzen 9 7900 under scrutiny in this article still reside within the flagship realm. The primary inquiry is: Can the newer Ryzen 9 7900 provide better value for your money? Let’s explore whether it offers any advantages over the Ryzen 9 7900X and determine which of the two is the superior choice.

About Ryzen 7000X and non-X series.

The Ryzen 7000X series was released on September 22, 2022, while the non-X series debuted on January 10, 2023. The Ryzen 7000X was the first AMD processor series to introduce DDR5 RAM and PCIe 5.0 compatibility, marking a transition to the LGA socket. It represents AMD’s Zen 4 generation of processors, which also encompasses the current Ryzen 8000 series. The compatible socket is AM5, also known as LGA 1718, with the codename “Raphael”. These processors feature TSMC’s 5nm architecture and AMD’s integrated graphics RDNA 2.0.

AMD Ryzen 9 7900X: Quick overview.

The AMD Ryzen 9 7900X could be considered somewhat misunderstood. This is because users typically choose either the flagship of the series, the R9 7950X, or a capable mid-range option like the R7 7700X. However, for those who desire a flagship processor but cannot afford the R9 7950X, the Ryzen 9 7900X presents a suitable alternative.

The Ryzen 9 7900X features 12 cores and 24 threads, boasting a base core frequency of 4.7GHz and a maximum of 5.6GHz. With an L3 Cache of 64MB and built on TSMC’s 5nm architecture, it promises exceptional performance in both productivity and gaming. However, potential drawbacks of this processor include its high base TDP of 170W and the lack of bundled air cooling, such as the Wraith Prism. Nonetheless, it remains an outstanding CPU delivering exceptional performance across various tasks.

AMD Ryzen 9 7900: Quick overview.

The newer R9 7900, in fact, can be seen as filling any gaps present in the R9 7900X. However, with the R9 7900, AMD has executed a very clever strategy. Serving as the flagship of the 7000 non-X series, the R9 7900 holds a prominent position in user preferences as the top non-X CPU. Therefore, users are faced with a choice: the R9 7900X, which nearly reaches flagship status, positioned just below the R9 7950X, or the R9 7900, a flagship within its own series.

The R9 7900 shares the same 12 cores and 24 threads configuration as the 7900X. However, there’s a slight discrepancy in core frequency, with the R9 7900 boasting a base frequency of 3.7GHz and a maximum of 5.4GHz. It retains the same 64MB L3 Cache and 5nm architecture as its counterpart. As evident, the R9 7900 excels in various tasks, including gaming, productivity, and modern applications. Its allure lies in bridging the gap compared to the R9 7900X, rendering it a more appealing option. Notably, it features a lower TDP of 65W, a significant departure from the 7900X. Moreover, it introduces the AMD Wraith Prism air cooling as a thermal solution, a feature that can save users money.

Ryzen 9 7900X vs. Ryzen 9 7900: Key Specifications.

Below, you can see the features of the two CPUs, allowing you to distinguish the main differences between them.

Ryzen 9 7900XRyzen 9 7900
12 Cores & 24 Threads
4.7 GHz Base Clock
5.6 GHz Max Boost Clock
Socket AM5
12MB L2 & 64MB L3 Cache
Integrated AMD Radeon Graphics
DDR5-5200 Memory
Unlocked Processor
Zen 4 Architecture
170W TDP
Price: 389$
12 Cores & 24 Threads
3.7 GHz Base Clock
5.4 GHz Max Boost Clock
Socket AM5
12MB L2 & 64MB L3 Cache
Integrated AMD Radeon Graphics
DDR5-5200 Memory
Unlocked Processor
Includes Wraith Prism Cooler
Zen 4 Architecture
65W TDP
Price: 369$

As you can see, the R9 7900X and the R9 7900 share many common elements. The key differences are as follows:

  • The R9 7900 has a lower base and maximum core frequency compared to the R9 7900X, impacting performance.
  • The R9 7900 features a built-in thermal solution with AMD Wraith Prism, whereas the R9 7900X does not include a cooling solution, resulting in additional cost for the latter.
  • The R9 7900 boasts a lower TDP of just 65W, making it one of the best options on the market currently.
  • In terms of price, they are comparable, but if cooling is necessary, the R9 7900X ends up being more expensive.

Ryzen 9 7900X vs. Ryzen 9 7900: Benchmarks.

It’s crucial to evaluate the performance of both processors across various tests. A comparison in Cinebench R23 can illustrate the variance between them in terms of core performance and how effectively they operate at their respective frequencies. This will provide us with an initial understanding of the expected differences and whether they are discernible in real-world scenarios.

Ryzen 9 7900X Vs Ryzen 9 7900 Cinebench R.23 Single Core.

As you can see, both the Ryzen 9 7900X and Ryzen 9 7900 deliver comparable results in single-threaded performance. The Ryzen 9 7900X slightly outperforms due to its marginally higher core speed. However, overall, we would say that the two processors are on par in this regard.

Ryzen 9 7900X Vs Ryzen 9 7900 Cinebench R.23 Multi Core.

When it comes to multi-threaded performance, we observe that the R9 7900X and R9 7900 yield nearly identical results. In practice, there is negligible disparity in the performance of the two processors, and users would not perceive the minimal difference evident in the numbers. Thus, we have the R9 7900, which despite having lower core frequencies, manages to deliver comparable processing power to the ostensibly more powerful R9 7900X. Let’s proceed to our next set of measurements.

Ryzen 9 7900X vs. Ryzen 9 7900: Gaming.

Let’s not beat around the bush. AMD often markets most of its processors as “gaming processors”. We tested both the Ryzen 9 7900X and Ryzen 9 7900 on some demanding titles to provide clear insights into their performance in this area. Undoubtedly, while gaming primarily relies on the GPU, we can also derive significant data on the CPU’s contribution.

Ryzen 7 7900X  Vs Ryzen 7 7900 COD: Warzone 1440p & 4K Ultra with RTX 4090
Ryzen 7 7900X  Vs Ryzen 7 7900 Cyberpunk 2077 1440p & 4K Ultra with RTX 4090
Ryzen 7 7900X  Vs Ryzen 7 7900 Red dead redemption 2 1440p & 4K Ultra with RTX 4090
Ryzen 7 7900X  Vs Ryzen 7 7900 Elden Ring 1440p & 4K Ultra with RTX 4090
Ryzen 7 7900X  Vs Ryzen 7 7900 Hogwarts Legacy 1440p & 4K Ultra with RTX 4090

In fact, the R9 7900X and the R9 7900 don’t exhibit any significant differences in gaming, which clearly favors the R9 7900. Pairing your processor with a good graphics card will minimize even the small, subtle differences, if any.

However, let’s not forget that both the R9 7900X and R9 7900 are flagship CPUs and can handle gaming superbly and with ease.

Ryzen 9 7900X vs. Ryzen 9 7900: Power Consumption.

One area where we expect the Ryzen 9 7900 to shine is in power consumption. While we’ve observed that it maintains performance at a high standard, essentially on par with the R9 7900X, if it manages to have remarkably low power consumption, then it’s undoubtedly advantageous. In our measurements, we did indeed observe lower power consumption at peak.

Ryzen 9 7900X vs Ryzen 9 7900 Peak power consumption.

Undoubtedly, the difference is remarkable and evident. The newer R9 7900 offers superior energy efficiency and performance comparable to the R9 7900X.

Final thoughts.

With the results we have at hand, there’s a clear winner between these two CPUs. The R9 7900 emerges as a more value-for-money (VFM) option compared to the R9 7900X and significantly improved. The minimal differences favoring the R9 7900X are primarily attributed to the higher core speed but are imperceptible to the user. However, in all other aspects, the R9 7900 is superior. It boasts a lower TDP, reduced power consumption, and maintains efficiency without sacrificing performance. Furthermore, it includes AMD’s Wraith Prism processor cooling solution, further reducing costs and saving users money on additional cooling solutions. This saved money can be invested in RAM or other components of the computer.

Personally, I believe the R9 7900 is the better processor overall compared to the R9 7900X. However, the final choice is yours.

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