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AMD Ryzen 9 7900X Vs Ryzen 9 5900X

What’s a better CPU? The new Ryzen 9 7900X, or the Ryzen 9 5900X? Let’s find out.

Updated: Sep 27, 2022 2:01 pm
7900 vs 5900 1

Ryzen 9 7900X Vs Ryzen 9 5900X: AMD is set to release its new Ryzen 7000 series CPUs on September the 29th, 2022. The new AMD Zen 4 CPU generation promises significant performance uplifts over the previous processor generation, Zen 3. 

LIVE NOW: AMD Ryzen 7000 series CPUs are on sale worldwide.

Ryzen 7000 series is available right now. Buy the AMD Ryzen 9 7900X now!

AMD has presented vast supposed improvements over the previous CPU generation, the trade-off is that you have to upgrade your motherboard and RAM this time around to access everything Zen 4 has to offer. 

Ryzen 9 7900X

ryzen 9 7900X

AMD Ryzen 9 7900X

Cores
8
Threads
16
Base speed
4.7GHz
Boost speed
5.6GHz
Cache
L3 64MB
Socket
AM5

Performance and cost go hand-in-hand when referring to CPUs, especially when you have to upgrade half of your system, so is it worth shelling out? Or is the 5900X still a better choice over the 7900X? Let’s find out. 

The review embargo for Zen 4 CPUs is set as the 26th of September 2022, which suggests that we’ll be getting our review samples soon.


Latest Zen 4 news

AMD recently announced some performance snippets and the price of all Zen 4 CPUs. AMD hosted an event on the 29th of August detailing the Ryzen 7000 series lineup, and the AM5 motherboards Zen 4 was built upon. With only rumors and leaks to go off the last eight-or-so months, it feels great to get some official confirmation from AMD.

Zen 4 performance:

Zen 4 Ryzen 7000 series CPUs were unveiled scoring massive points and high frame rates, in synthetic and real-world benchmarks respectively. We have a whole article covering the performance of the new Ryzen 7000 series CPUs in detail here: AMD unveils Ryzen 7000 series specs, price, and more.

The event focused primarily on the Ryzen 9 7950X and its huge lead over the competition’s 12900K. Not only is the Ryzen 9 7950X up to 62% faster than the 12900K, but it also delivers all this performance at much better power efficiency. The 7950X has been rated as 47% more power efficient than the Core i9-12900K. 

Geekbench scores:

Performance: Geekbench 5.4 single-thread performance vs 12900k

  • 12900K ~ 2040 points
  • 7600X ~ 2175 points
  • 7700X ~ 2225 points
  • 7900X ~ 2250 points
  • 7950X ~ 2275 points

Not only that but projected IPC improvements appear to be higher than even AMD predicted. AMD CEO Dr. Lisa Su explained during the event that, IPC increases are up to 13% over Zen 3 CPUs. This is huge at core frequencies approaching 6GHz.

Ryzen 7000 series Price:

Price: The price of each Zen 4 CPU is as follows:

  • Ryzen 9 7950X – $699
  • Ryzen 9 7900X – $549
  • Ryzen 7 7700X – $399
  • Ryzen 5 7600X – $299

Zen 4 Ryzen 7000 release date confirmed

Release date: The release date for the Rzyen 7000 series stands on September 27th, 2022.

There are much more details to be had on the page we created covering the event.


Ryzen 9 7900X vs Ryzen 9 5900X: Specifications 

When comparing two components it’s important to analyze the on-paper specifications of each component and compare them. This will give us a good understanding of how the two components will perform in relation to each other. 

7900 vs 5900

Ryzen 9 7900X 

The Ryzen 9 7900X is a brand new Zen 4 CPU from AMD, the processor is currently the second fastest Zen 4 Ryzen 7000 series CPU on the market. When you look at the specs, it’s a wonder how AMD could make anything faster than this. 

The Ryzen 9 7900X specifications are: 

  • Cores: 12
  • Threads: 24
  • Base clock frequency: 4.7 GHz
  • Boost clock frequency: 5.6 GHz
  • L3 cache: 76MB
  • TDP: 170W
  • iGPU: RDNA 2

Ryzen 9 5900X 

The Ryzen 9 5900X was the second best CPU Zen 3 had to offer (excluding the 5800X3D). It brought significant power efficiency and performance over the Zen 2 processors. The 5900X certainly turned a lot of heads. 

The Ryzen 9 5900X specifications are: 

  • Cores: 12
  • Threads: 24
  • Base clock frequency: 3.7 GHz
  • Boost clock frequency: 4.8 GHz
  • L3 cache: 64MB
  • TDP: 105W
  • iGPU: N/A

Ryzen 9 7900X real-world gaming benchmarks 

We put the Ryzen 9 7900X through its paces in not only synthetic workloads but also real-world ones. Here we have five popular games to test the Ryzen 9 7900X in. 

We are again comparing the 7900X to the 5900X akin to the first synthetic portion of the 7900X’s performance. 

Gaming Performance Ryzen 9

These are the games we tested and the results we found while benchmarking. All of the games are tested in 1080p and on low settings, except for CS:GO which is set on high. Let’s be honest, CS:GO is already pretty well optimized. 

Ryzen 9 7900X gaming benchmark results 

As you can see from the results above, the Ryzen 9 7900X can definitely hold its own in real-world gaming scenarios. Milking every drop of FPS out of our games as possible. 

In Battlefield V, the Ryzen 9 7900X manages a respectable 192 FPS, whereas the Ryzen 9 5900X only managed to bring home a 189 FPS average.

In Cyberpunk 2077, the Ryzen 9 7900X scores highly above the 5900X. The 7900X manages an average FPS of 174 in Cyberpunk. Whereas, the 5900X only brings in an FPS average of 147 FPS. This equates to a performance increase of around 16% over the 5900X. 

Elden Ring is definitely a close call. The 7900X manages to score a respectable 157 FPS average, however. The Ryzen 5 5900X finds the will to produce a 150 FPS average, a similar score. but the 7900X still comes out on top by around 4%.

There’s a huge difference in CS:GO at least, between the 7900X and 5900X. The 7900X brought home a 389 FPS average, whereas the 5900X only managed to achieve a 365 FPS average. This equates to a rough performance increase of 6%. 

Finally, we have GTA V, GTA V is either running at maximum capacity, or it’s more CPU optimized than it once was, regardless. Both the 5900X and 7900X scored the same in GTA V. The 7900X averaged 187 FPS, and the 5900X managed 187 FPS.

7900X vs 5900X: specification comparison 

Here we will compare the specifications of both the Ryzen 9 7900X and the Ryzen 9 5900X, to see how they both stack up on paper. This should help you make an informed decision when comparing any two types of components in the future. 

Core and thread count 

Both the 7900X and the 5900X have the same core and thread counts. 

7900X VS 5900X DRAW

Core count

A CPUs core count is important, as the more cores a CPU has, the better at multitasking it will be natively. There are a few factors that affect a CPUs ability to multitask, like core speed and cache. But the core count is the one that has the most effect. 

CPUs with higher core counts are able to handle more CPU instructions simultaneously and avoid a system-crippling backlog of instructions. 

Thread count 

Threads are similar to cores, but not quite. Thread is the name given to the second instruction a CPU core can handle simultaneously with the primary. What we mean by this is a CPU core is split or “multithreaded” into two parts, a physical core and a virtual core within the physical core. 

This virtual core shares the same resources as the physical core, but the physical core has priority over these resources. So the virtual core or “thread” is slightly slower as a result. The splitting means that the CPU core can handle two instructions at once rather than just one. Almost doubling the core output. 

A CPU with more cores will have more threads and will again be better at multitasking as a result. 

Clock speed 

The Ryxen 9 7900X has a faster base and boost core speed than the 5900X. 

Core speed is a measurement that determines the number of cycles your CPU can complete in one second. A ‘cycle’ consists of three main actions – fetch, decode and execute. It’s these three actions that fundamentally comprise CPU operation as we know it. 

A CPU with a faster base and boost speed will generally perform better if it’s part of the same generation and has the same/similar number of cores. Core speed often heavily influences the CPU’s performance in single-core workloads. 

Cache

The Ryzen 9 7900X has a larger cache than the 5900X. Not only that, the 7900X has double the L2 cache per core, up to 1MB from 512KB. 

WIN 7900X VS 5900X

A CPU cache is storage hardware built into a CPU. Cach is located much closer to processing cores than standard RAM for speed and accessibility, as only the most important instructions make it into the higher levels of cache. The cache is comprised of three levels and is structured as follows. 

  • L1
  • L2
  • L3

Level one cache is integrated closest to the CPU cores to allow for the fastest access speeds. This is where vital data and instructions that need to be accessed quickly is stored. 

Level two cache is a middle ground between levels one and three, with median capacity and median access speeds. This is reserved for less vital data but you still want your CPU to have quick access to it. 

Level three cache is large and slow, reserved for programs you may run often on your PC. Although we describe level three cache as slow, it’s still much faster than accessing information from your system’s dedicated memory.

More cache is generally better, it allows the CPU to store more frequented instructions allowing much faster access and execution speeds for programs you use the most.

TDP

The Ryzen 9 5900X has a lower TDP.

7900X VS 5900X WIN

TDP stands for Thermal Design Power and is the maximum amount of heat energy A CPU can output under normal operating conditions. Generally, a CPU with a lower TDP is better because it’s more power efficient. 

However, in this case, the 7900X has a higher TDP because it’s much faster than the 5900X, so it consumes more energy. 170W for a CPU that promises a performance uplift of around 35% over the previous generation is still pretty power efficient. 

Socket 

Both of our CPUs today belong to different motherboard sockets. The newer Ryzen 9 7900X belongs to socket AM5, and the older Ryzen 9 5900X belongs to socket AM4

7900X VS 5900X DRAW

The socket is the component on the motherboard in which the CPU sits and allows communication between the CPU and the rest of the motherboard. If your CPU and motherboard sockets are not the same, they are NOT compatible. 

If you’re considering getting a Ryzen 9 7900X you’ll need a new motherboard and new DDR5 RAM for the rest of your PC to be compatible with your new CPU. This is an expensive undertaking and not one for those on a budget. 

Again, a Ryzen 7000 series CPU will NOT work in your current AM4 motherboard, thanks mainly to the different LGA socket architecture. 

iGPU

The Ryzen 9 7900X comes equipped with an iGPU, whereas, the 5900X does not. 

WIN 7900X VS 5900X

All of the Ryzen 7000 series CPUs come equipped with an RDNA 2-based iGPU. This mainly helps the cost of building a whole new system by negating the need to buy a GPU for the system to work.

AMD is famous for its fantastic APUs, so we expect great things from the RDNA2 series iGPUs in the Ryzen 7000 CPUs. 

Where to buy the Ryzen 9 7900X?

So, where can you buy a Ryzen 9 7900X? Ultimately it depends on what region of the world you reside in. There are plenty of retailers out there that will stock the Ryzen 9 7900X, and we’ve outlined a few for you. 

Ryzen 9 7900X Pre order

Here are the places you can buy a 7900X. 

Conclusion 

Although the Ryzen 9 7900X isn’t out yet, we have to name it our clear winner. Its superior core and thread count, with a much higher IPC and clock speeds, will demolish the 5900X performance-wise. 

The 5900X can be had for a great deal right now in the shadow of the new Zen 4 CPU release, it will surely cost much less than the predicted $799 7900X price tag. Along with the AM5 motherboard and DDR5 Memory you have to buy. 

It’s up to you to decide if the baseline 35% performance increase is worth the money. 

We hope you enjoyed this Ryzen 9 7900X vs Ryzen 9 5900X article. 

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