Power Temperature and Frequency
We will now test the power and temperature on each CPU, as well as the frequency on the Ryzen 9 7950X. To run these tests we ran Cinebench R23 for 10 minutes and took readings according to HWiNFO64, the latest version.
Power
In our testing, the AMD Ryzen 9 7950X consumed 235.6W CPU package power. That is 77% or 102.3W more power than the previous generation Ryzen 9 5950X CPU. Compared to the Ryzen 9 7900X the 7950X consumes 17% more power for the extra 4 cores/8 threads. Considering we saw 30% performance improvements thanks to the added cores/threads, this is an efficient power to performance increase. The Intel Core i9-13900K consumes a ridiculous amount of power at 336.9W, which is 43% more power than the Ryzen 9 7950X does.
Temperature
The TjMax of the AMD Ryzen 9 7950X is 95c, and as such our CPU is running at 95c, right where AMD intends it to run safely. This is 52% warmer than the Ryzen 9 5950X runs at on the same cooler. The Intel Core i9-13900K takes the cake with the highest temperature at 100c, which is 5% hotter than the 7950X.
CPU Frequency
The CPU Boost Frequency is up to 5.7GHz on the Ryzen 9 7950X. What we want to know though is how high it can attain when running all cores at the same time. For this test, we again ran Cinebench R23 to see in HWiNFO64 what all the cores looked like.
As you can see, running all the cores at full-throttle in Cinebench R23 the Ryzen 9 7950X can achieve around a 5.075-5.150GHz frequency on all cores. This is just slightly under what the Ryzen 9 7900X can achieve at full-load on all-cores. For single-core/thread it did boost up to 5.7GHz, and was around this frequency while gaming.
Discussion (4 replies)
Join Discussion →I love the graph at the bottom that shows how you came up with the review score - awesome review.
Thanks, @Brent_Justice for the great review! I'm keeping a keen eye on all these new processors as I gather knowledge for my next build. I can't wait to see what the 3D Cache 7000 series does.
Nice review... yea I'm definitely skipping this generation of CPU's my 5900x is plenty fast for what I do at 1440p.
Great review! Now how do I cool the stupid thing? And is my "old" 800w power supply going to keep up?
Microcenter has the 7950x + 32gb ddr5 6000 gskill ram for $567, and the 7900x same ram bundle at $469. Looking at those gaming charts, 4k is totally GPU bound, but 1440p seems to be the sweet spot. I think I would swing for the 7900x personally.
I also play (more than I should) a fair amount of Civ 5 + Vox populi.... it is my understanding it is a mostly single threaded game. I have cranked my 5700x to the max while playing, trying to cut down on the time between turns when AI is working.... doesn't seem to make much difference. I see one or 2 cores pegged out and the rest do nothing. So I'm not even sure the $567 upgrade (and $250+ for a new mobo) would make a difference. I generally prefer AMD to Intel these days, but it seems like Intel does better on the single threaded stuff?