A few days ago Tech PowerUp released a review of the 14900k with various power restraints. This was both telling and interesting for me, and something I really wish I had seen a week ago. However, those other chips are running at stock. It’s not an apples-to-apples comparison. Is there anything similiar to that for any of Ryzen 7000 CPUs? I’ve read plenty of anecdotes, but such evidence is plentiful and all over the place.
Absolute balls-to-the-wall benchmarks are meaningful and have their uses, but when that’s all you have, it’s just a fruitless dick measuring contest. Why Intel is playing that game, I can’t imagine since it’s a really bad look, but that isn’t the subject of this post.
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Just look for ANY review of non X parts? those run stock at 65w-95W I believe.
Here’re 13900K vs 7950X benchmarks:
https://www.anandtech.com/show/17641/lighter-touch-cpu-power-scaling-13900k-7950x/2There was also some article on computerbase.de but I’ve lost the link.
Why Intel is playing that game, I can’t imagine since it’s a really bad look, but that isn’t the subject of this post.
Intel are playing that game because they’re still behind in power efficiency. It’s part process and part architecture, but in practice the result is simply that for any given power limit zen4 will outperform 12th gen and its various refreshes. Heterogeneous architecture ought to give Intel a slight power advantage outside benchmarks and chiplets put AMD at a disadvantage, but in practice e-cores are more space efficient than they are energy efficient (letting them put more cores in a smaller area die and offsetting the cost of large monolithic dies) and TSMC 5nm beats Intel 7nm. Intel are catching up, but it will take time, and until they do become competitive in efficiency they prefer to market on pure performance (because their performance/W is quite unimpressive)
If you do a google search for “[Ryzen CPU] Eco mode benchmarks” you should get a fair few results, though they’ll probably be more from hobbyists than professional media outlets.
Ryzen CPUs have had an “Eco mode” option for a long, long time now. In the case of my 5800X, enabling Eco mode sets the max TDP at 65 watts, plus some other stuff. I get about 25%-30% power savings in exchange for a 10%-15% performance reduction, plus the CPU puts out a lot less heat, which is also nice, it’s a very fair trade, but it is a trade.
Google “Ryzen Eco mode benchmarks,” that’ll get you started.
As others point out, there are several comparing Eco mode vs stock. I did my own analysis over a frequency/temperature/power range for a 7900X. 45 C to 75 C which covered CPU package power of 55 W to 120 W.
To get to a 7950X, multiply by about 1.20-1.25x for the performance at the same power. Graphs showing results are at the bottom. Results do not apply to the X3D.