Power consumption and gaming efficiency
There is a striking difference in drinking behavior between the two new CPUs. While the Ryzen 7 7700X requires considerably less electrical energy than the Ryzen 7 5800X despite a significant increase in performance, the Ryzen 9 7950X comes out on top of the incandescent stockings, whereby the additional consumption compared to the Core i9-12900K is strongly put into perspective, especially with high CPU loads, when you also look at the gaming performance. But it is always thirstier than the rest when it drifts into the part-load range.
This can be tested quite well by switching off a CCD. Then you are only slightly above the Ryzen 7 7700X’s rates, but often even get the slightly better performance than it. If you need the Ryzen 9 7950X for work and only want to play games now and then, you can simply switch off 8 cores in higher resolutions if you want to save money. Then he has the choice of both: compute until the doctor comes and a rather efficient gaming experience. However, both at the same time and without intervention is not possible (yet).
Let’s now look at the efficiency already briefly mentioned. The Ryzen 7 7700X is not only faster than its direct counterpart Core i7-12700K in the lower resolutions, especially under load, but it is also much more frugal. Only from Full HD do you get to parity and with little load in WQHD the efficiency reverses. Thus, we can see that Alder Lake is much more frugal with a limited load, and only gets flooded with power when there is a full performance boost.
Power consumption and efficiency in mixed workloads
This is where AutoCAD comes in handy, because there are no performance-hungry rendering interludes. The CPU load is usually below 70 percent, often enough even much lower, which reflects the normal workday quite well. In addition, the Cadalyst run is quite consistent, also in terms of power consumption on systems with different speeds. The Ryzen 7 7700X requires significantly less power than the Ryzen 9 7950X with similar overall performance, but all Zen 4 CPUs are still slightly less thirsty than their direct predecessors.
Now you can put the score in relation to the power consumption to show the efficiency. The new CPUs have an advantage here, and if you take all applications in these load ranges as a guideline, then you really have to speak of an improved process, because the ratio of performance and consumed electrical power speaks for itself
Full power during rendering
Here, the Ryzen 7 7700X is in the midfield, while the big CPU allows itself a decent energetic load. At 235 watts, it even surpasses the Intel Core i9-12900K, the previous leader at the counter. But there is always the question of what you get in return…
If you put power consumption and performance under full load into relation, the picture tilts completely and both new AMD CPUS play catch-up with the rest of their gaming companions. Except for the weak Core i5-12400, no other CPU even comes close in terms of efficiency. Well done!
- 1 - Introduction, important preface and technical data
- 2 - Chipset, motherboard, memory and test setup
- 3 - Gaming Performance HD Ready (1280 x 720 Pixels)
- 4 - Gaming Performance Full HD (1920 x 1080 Pixels)
- 5 - Gaming Performance WQHD (2560 x 1440 Pixels)
- 6 - Autodesk AutoCAD 2021
- 7 - Autodesk Inventor 2021 Pro
- 8 - Rendering, Simulation, Financial, Programming
- 9 - Science and mathematics
- 10 - Power consumption and efficiency
- 11 - Temperatures and cooling
- 12 - Summary and conclusion
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