Product test
AMD’s little hothead
by Kevin Hofer
AMD is back on top!
27.9.2022
Translation: Patrik Stainbrook
AMD has recaptured the performance crown from Intel. After intensive testing, the Ryzen 9 7950X has beaten its nemesis, the Core i9-12900K, in almost every category. However, the CPU does have a dark, or should I say hot, side.
AMD is back on the throne – at least for now. After finally beating its eternal competitor Intel two years ago, the manufacturer surprisingly lost this spot to Intel’s Alder Lake processors last year. But thanks to innovative Zen 4 architecture, the new flagship Ryzen 9 7950X has once again taken the top spot in terms of performance. But for how long is the question? Intel will also be bringing out new CPUs next month.
For the time being, however, this is a pipe dream. The new Ryzen 9 7950X cuts quite the figure in our tests. Unfortunately, the CPU does get quite hot under load.
I’ll get to my actual review of the CPU in a moment. If you’re interested in the lineup and what else is new, you can read about it in the article below.
Our test setup and methods
I used the following components for this review:
All components were provided to me by the manufacturers for testing. I used the same RAM, SSDs, cooling as well as graphics card for the Intel CPU comparison. For my AMD data, I used a RAM kit with 3200 megatransfers per second.
In the BIOS, I activated the correct speeds and timings for the RAM. Otherwise, I left everything at default. I was running BIOS version 0604 and Windows 11 was at version 21H2 (22000.978).
Here’s an overview of the different benchmarks:
I ran all benchmarks three times and took the best result. For the games, I used the highest possible presets. Otherwise, I left everything at default except for the resolution.
Cinebench R23
Cinebench R23 tests how a CPU performs when rendering 3D models. The benchmark creates scores for single and multi-core performance from these calculations.
Power consumption and temperatures
AMD does have an alternative for decreasing temperatures under load: Eco Mode. With it, the thermal design power (TDP) can be limited from the specified 170 watts to 65 or 105. With a limitation to 65 watts, the 7950X achieves a better result in Cinebench R23 than the previous 5950X. I tried this out in the following article:
CPU-Z
The CPU-Z benchmark tests a CPU’s speed in both the single and multi-core mode and uses this to calculate a total score.
Evidently, the 7950X has successfully caught up to Intel’s 12900K in the single core benchmark, even beating it by almost three per cent. Thus, the new Ryzen CPU is 23 per cent better than its predecessor. In multi-core mode, it even beats its rival by a massive 46 per cent.
7-zip
7-Zip’s built-in benchmark tests a system for compressing and decompressing data. From this, it calculates a score in giga instructions per second (GIPS). I chose the default «dictionary size» of 32 megabytes.
The 7950X pulverises all previous results. A Ryzen CPU achieves 117 per cent more GIPS than its rivals from Intel. Compared to its predecessor, there’s a 50 per cent increase in GIPS.
Blender Benchmark
Blender Benchmark renders three scenes in its 3D graphics suite (version 3.3) and calculates three scores using them. I’ve added these up to give final scores for each.
Here too, the Ryzen 9 7950X doesn’t give the competition any room to breathe: The CPU scores a whopping 57 per cent more points. Compared to its predecessor, it still increases performance by 47 per cent.
Photoshop
Using the Photoshop Benchmark from Puget Systems, I ran different workloads. You can find more detailed information on that here. At the end, the benchmark calculates a score based on the reference workstation.
Compared to its predecessor, the 7950X makes a huge leap forward, beating the 5950X by 36 per cent. Regarding its competition, there’s a nine per cent increase.
Premiere
Using the Premiere Benchmark from Puget Systems, I ran different workloads. You can find more detailed information on that here. At the end, the benchmark calculates a score based on the reference workstation.
Traditionally, Intel CPUs perform better in Premiere because they’re optimised for it. Same goes for Ryzen 7000 processors. The 7950X scores 15 per cent less than the 12900K. Compared with its predecessor, there’s still an 11 per cent increase.
PCMark 10
The PCMark 10 benchmark tests diverse scenarios such as app loading times, the efficiency of spreadsheet calculations, web browsing and photo and video editing. In other words, it demonstrates how suited a processor is to office work. From that, it calculates a score.
Until the 12900K, I never noticed big gulfs in performance between CPU generations for PCMark. Intel’s Alder Lake changed that, with Ryzen 7000 processors continuing this trend. The 7950X scores 7.5 per cent higher than the 12900K. Compared to its predecessor, this even reaches 15 per cent. Previously, this was usually only one to two per cent.
Fire Strike, Fire Strike Ultra, Time Spy and Time Spy Ultra
These synthetic game benchmarks provided a first glimpse of in-game performance. I haven’t provided the overall score calculated from the results of the graphics card and CPU. This is because I want to exclude GPU performance for CPU reviews.
Across all four benchmarks, the 7950X scores 8 per cent higher than the 12900K. Only in Time Spy does it have to admit defeat. But compared to the previous AMD CPU, it achieves a noteworthy 23 per cent higher rating across the four benchmarks.
Synthetic benchmarks usually don’t speak the whole truth. How’s the situation in-game?
The games
Across all resolutions, the 7950X delivers more FPS than the competition and its predecessor. As expected, these differences became smaller at higher resolutions. At 1080p it was four per cent, at 1440p two per cent and at 2160p one per cent when compared to Intel’s 12900K. Compared to its predecessor, the values are 12, 5, 7.5 and three per cent.
The 12900K delivers more FPS than the 7950X in «Anno 1800», «Civilization VI», «Assassin’s Creed: Valhalla,» and «Forza Horizon 5». However, these differences are minimal and amount to a maximum of 6 FPS. Most games run smoothly with the 7950X. However, I kept experiencing stutters in «Far Cry 6» despite the high average FPS.
Verdict: back on top (for now)
The new flagship Ryzen 9 7950X processor has replaced the Intel Core i9-12900K as our best processor. AMD’s CPU takes the cake in almost all use cases.
But the reigning champion also has its downsides. Under load, the 7950X is power hungry and gets hot: 95 degrees Celsius at up to 230 watts. Compared to its predecessor, this is quite insane. Thankfully, AMD does offer Eco Mode as a less straining alternative.
Kevin Hofer
Senior Editor
kevin.hofer@digitecgalaxus.chFrom big data to big brother, Cyborgs to Sci-Fi. All aspects of technology and society fascinate me.
Gaming
Follow topics and stay updated on your areas of interest
