[The Exiled]

AMD Ryzen 7 6800U Efficiency Review: Zen 3+ beats Intel Alder Lake

AMD now uses Zen3+ cores, which are manufactured in a more advanced 6 nm process and the cores have been further optimized for efficiency. This means AMD has already caught up with Apple (5nm) and clearly ahead of Intel with the 10 nm process. We have already shown that the new Alder Lake processors are very powerful thanks with their Performance cores and also faster than the rivals, but the Performance cores fall behind AMD’s new Zen 3+ cores in terms of efficiency. The comparison between the three Intel models is also very interesting, because the Performance cores are basically identical on all three models. The maximum clock of the Core i5-1240P is lower, so it is more efficient. The Core i7-12700H has a slightly higher package power than the Core i7-1260P, which should be a result of the two additional Performance cores. However, our results once again show how inefficient the 10nm chips are at higher clocks. The upcoming U-series models use the same P-cores and Intel lists a maximum clock of 4.8 GHz for the Core i7-1265U, for example, which is even 100 MHz higher compared to the Core i7-1260P and Core i7-12700H, so we expect a very high single-core power consumption.

The efficiency advantage of the new Ryzen 7 6800U over the current Alder Lake models is much bigger in multi-core tests and contrary to the single-core tests, there is no real performance advantage anymore, either. Even the Core i7-1260P with a much higher power consumption is just slightly ahead in the benchmarks and our results once again show how inefficient Alder Lake is at higher consumption values. The Core i5-1240P in the Yoga Slim 7 Pro consumes much more power than the Core i7-1260P in the Yoga 9i 14, but this is hardly noticeable in the performance. It is also interesting to see how Alder Lake-P chips perform at lower power levels when the cooling performance is limited. This is the case for the Samsung Galaxy Book 2 Pro 13, where the CPU is quickly limited to just 20W. The efficiency increase is very small compared to the gains we saw for the Ryzen 7 6800U at 12W, which means Intel’s hybrid architecture with the 10nm cores is not really suited for very compact systems. These are not good news for the upcoming Alder Lake-U CPUs, which are positioned in the 15W class. However, Intel still lists a maximum consumption of 55W, even though these chips are only equipped with 2 P-cores. Based on our results so far, we do not believe the Alder Lake-U systems will be very competitive, neither in terms of performance, nor efficiency.

Izvor: NotebookCheck.net