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Abde Manaf

At HI Digital I test and write about different hardware configurations to show other PC users what they can expect from their build. My end goal is to educate the masses to make the right decision when they are looking for new PC parts to buy

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Pros And Cons

Comparison Table

Architectural Differences

1. Core Count: The Ryzen 9 7900X has 12 cores, while the Core i9 12900K has 8 performance cores and efficiency cores, which adds up to 24 threads, the same as the thread count on the Ryzen.
2. Clock Speeds: The Ryzen 9 7900X has a base clock of 4.7GHz and a boost of up to 5.6GHz. Conversely, the base clock of the Core i9 is around 3.2GHz, with a boost of up to 5.2GHz.
3. TDP: The base TDP of the Ryzen 9 7900X is around 170 watts, whereas the 12900K has a PL1 TDP of 125 watts, but it has a much higher PL2 TDP of 253 watts.
4. L3 Cache: The L3 cache of the Ryzen is substantially large at 64MB, whereas the i9 has an L3 cache of only 30 MB.
5. Process Node: The Ryzen 9 7900X is based on a 5nm manufacturing process for the logical part of its cores, whereas the 12900K uses a much older 10nm process node, which reflects its old age.

Running on the latest AM5 socket, the AMD Ryzen 7000 series has gathered all the buzz around it. On the one hand, we have AMD’s second-most top-tier Ryzen 9 7900X; on the other, we have Intel’s soon-to-be-old flagship Core i9-12900K. So, in this guide, we will do the ultimate Ryzen 9 7900X vs Core i9-12900K comparison and figure out which CPU comes out on top.

Ryzen 9 7900X vs Core i9-12900K – Gaming Benchmarks

Moving onto the core section of the comparison, we will now talk about the benchmark tests of the Ryzen 9 7900X vs Core i9-12900K comparison.

Testing Rig

• Motherboard 1: Gigabyte X670E AORUS MASTER
• Motherboard 2: GIGABYTE Z690 AERO G
• RAM: Corsair Vengeance DDR-5 32GB RAM 5600Mhz (2X 16GB) – CL36
• CPU Cooler: Arctic Liquid Freezer II 360mm
• PSU: ENERMAX REVOLUTION D.F. X 1050W
• Storage: Sabrent Rocket 4 Plus G 2TB
• Resolution: 1080p

Hitman 3

• The first game we chose to test was Hitman 3, and the Ryzen had a substantial advantage in it. It had an average framerate of 236 FPS, around 9% higher than the 217 FPS average the Intel processor gave in our short test.
• The 1% lows were also substantially different, with the Core i9 dipping down to around 151 FPS, while the Ryzen dipped to around 164 FPS in our testing.

Assassin’s Creed Valhalla

• Both processors came much closer to each other in our testing of Assassin’s Creed Valhalla, with the 12900K hovering around 125 FPS, while the Ryzen was slightly faster at 127 FPS
• The 1% lows were almost the same, with the i9 dipping to around 86 FPS on average, while the 7900X had lows of around 87 FPS.

Cyberpunk 2077

• The i9 managed a noticeable win when tested Cyberpunk 2077, with an average framerate of 164 FPS, while the Ryzen had an average closer to 157 FPS. This computes to Cyberpunk running around 4.5% better on the Intel processor.
• The 1% lows were also better on the 12900K, hanging around 134 FPS, while the Ryzen hung closer to lows of 127 FPS.

Forza Horizon 5

• Forza managed an average framerate of around 209 FPS in our testing with the i9, while the Ryzen had an average of 214 FPS, around 2.3% faster. It was a small win for the Core Ryzen, but nonetheless.
• The 12900K had lows of around 149 FPS, while the Ryzen was a bit smoother with lows of 156 FPS. This difference was not noticeable because of our test’s relatively high overall framerate.

Death Stranding

• The delta grew between the processors in our test of Death Stranding, with the i9 getting an average framerate of 208 FPS, while the Ryzen outdid it by around 7%, with an average of 222 FPS.
• The 1% lows showed a difference of 20 FPS in the 1% lows, with the Ryzen going down to around 179 FPS, while the i9 had lows of around 159 FPS.

Microsoft Flight Simulator

• To cap out our testing, Microsoft Flight Simulator ran better on the Ryzen with an average of 63 FPS, while the i9 gave an average framerate of around 59 FPS. This difference comes out to around 7%.
• The 1% lows were also mildly better on the Ryzen, hitting around 33 FPS, while the 12900K hung around 31 FPS at its lowest performance moments.

Ryzen 9 7900X vs Core i9-12900K – Overall Gaming Performance

In our performance testing, the Core i9-12900K averaged a framerate slightly smoother than the i9. Overall, the average gaming framerates of the Ryzen 9 7900X were 3.68% better than those of the Intel i9-12900K. As for the 1% lows, the i9-12900K went ahead with a 3FPS difference, slightly better than the Ryzen 9 7900X.

Power Consumption

On average, the power consumption difference between the AMD Ryzen 9 7900X and the  Intel core i9-12900K was about 3%, which is not very large. So, the users can pick which processor they want without worrying about heavy electricity bills falling in any one processor’s court.

Thermal Efficiency

The temperatures of these processors were virtually identical with a difference of only one degree, and should not play a part in your final purchasing decision. It is important to remember that the temperature of your CPU can vary on many factors, so keep in mind that the temperatures in your setup can be much higher or lower than what we tested in this comparison.

Pricing And Availability

Even though there is not much of a price difference between the two chipsets alone, the R9 7900X costs about 5.2% more. That’s because the AM5 socket, being new, costs more than the 1700 socket. However, it is highly unlikely that the overall pricing of the two CPUs will affect your purchase decision.

Final Verdict – What We Recommend

Ryzen 9 7900X: The Ryzen 9 7900X was mildly better in average framerates than the Core i9-12900K. But that advantage comes with certain demerits such as a 5.2% price hike. The rest of the factors like power consumption and thermal efficiency are not very distinct so they don’t hold anything against the CPU.

Core i9 12900K: On the flip side, the Intel Core i9 12900K excels in the %1 lows and gives similar average framerates as well as a cheaper price and similar power and thermal draws. Moreover, it gets a little smoother than the AMD processor in many instances, which makes its case pretty powerful against its competitor.

We would say this comparison is a toss-up between the two. If you have an existing Intel 12th-generation platform, we recommend sticking with the 12900K. Conversely, if you want to build a PC that you could be upgrading for years, the Ryzen 9 7900X gives you a great entry point into the expectedly long life of the AM5 platform.

More From Core i9-12900K

• Core i9-12900K vs Ryzen 7-5800X3D
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• Core i9 14900K Vs Ryzen 9 7900X
• Intel i9-13900k Vs Ryzen 9 7900X
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Abde Manaf

[How-To Guides Expert]

Laiba, our tech guru at HI Digital, simplifies and crafts How-To Guides with a Google IT Support Certificate. Beyond tech, she captures the city’s aesthetics through her lens. Join her journey where tech meets creativity!

Get In Touch: Laiba@hidgt.com