This year, AMD is expanding its range of mobile processors with a new line of powerful solutions called Dragon Range. These are chiplet solutions similar to desktop stamping. The reason why this series came with the generation Zen 4 is the one that just Zen 4 is the first series that has integrated graphics even in the chiplet variant (without which it would not work well in the mobile segment).
| Ryzen | Zen | I d. vl. |
rate | L3 | GPU SP + arch. |
rate | DDR | TDP |
|---|---|---|---|---|---|---|---|---|
| 9 7945HX | 4 | 16/32 | 2,5 / 5,4 GHz | 64MB | 128 RDNA2 | 2,2 GHz | 5 | 55-75W |
| 9 7845HX | 4 | 12/24 | 3,0 / 5,2 GHz | 64MB | 128 RDNA2 | 2,2 GHz | 5 | 45-75W |
| 9 7940HS | 4 | 8/16 | 4,0 / 5,2 GHz | 16MB | 768 RDNA3 | 3,0 GHz | 5 | 35-45W |
| 9 6980HS | 3+ | 8/16 | 3,3 / 5,0 GHz | 16MB | 768 RDNA2 | 2,4 GHz | 5 | 35W |
| 9 6900HS | 3+ | 8/16 | 3,3 / 4,9 GHz | 16MB | 768 RDNA2 | 2,4 GHz | 5 | 35W |
| 7 7745HX | 4 | 8/16 | 3,6 / 5,1 GHz | 32MB | 128 RDNA2 | 2,2 GHz | 5 | 45-75W |
| 7 7840HS | 4 | 8/16 | 3,8 / 5,1 GHz | 16MB | 768 RDNA3 | 2,9 GHz | 5 | 35-45W |
| 7 6800HS | 3+ | 8/16 | 3,2 / 4,7 GHz | 16MB | 768 RDNA2 | 2,2 GHz | 5 | 35W |
| 5 7645HX | 4 | 6/12 | 4,0 / 5,0 GHz | 32MB | 128 RDNA2 | 2,2 GHz | 5 | 45-75W |
| 5 7640HS | 4 | 6/12 | 4,3 / 5,0 GHz | 16MB | 512 RDNA3 | 2,8 GHz | 5 | 35-45W |
| 5 6600HS | 3+ | 6/12 | 3,3 / 4,5 GHz | 16MB | 384 RDNA2 | 1,9 GHz | 5 | 35W |
Four models were listed (highlighted in yellow in the table): with 16, 12, 8 and 6 cores. Today we are talking about the octa-core, whose test in CineBench R23 appeared on the Bilibili website:
For a better context, I include the result in the graph:
graph-15
8 cores Zen 4 here it surpasses the 14 cores (6+8) Core i9-12900HK and comes close to the 16 cores (8+8) Core i9-12900HX.
A separate chapter would be the energy side. Processors have some TDP and some power limit. AMD recommends a TDP in the range of 45-75 watts for the tested Ryzen 7 7745HX. The limit is up to the notebook manufacturer (mainly according to the cooling and battery) and in practice it is set up to twice the TDP value. The author of the test states that the processor consumed ~95 watts. For Intel, the situation is more complicated: In the case of the Core i9-12900HX, Intel recommends a TDP of 55 watts and a limit of 157 watts, i.e. a value 2.85 times higher than the TDP. The practice is that perhaps no commonly available notebooks built on Core i9 H or HX series have a basic (55W) TDP, but it is practically always increased by tens of watts. Whether the manufacturer keeps the ratio (2.85×) for the power limit or sets a completely different one is completely individual. So we cannot say exactly how many watts the Core i9-12900HX runs on – however, we can say that the consumption limit is in practice at least tens of percent higher than that of Ryzens, in some cases even multiples.
For Intel, in any case, from the point of view of the energy side, the situation in the mobile segment is more complicated than in the desktop, because there turning off the energy limits and consumption reaching 300-350 watts does not represent a problem for the authors of the reviews, they somehow cope with the cooling, high performance is achieved in the graphs and only in the end, in the minuses, a note that the consumption is high. In notebooks, where the cooler and cooling capacity are given, you cannot go to such an extreme. Consumption may be higher compared to the competition, but usually not by as much as in a desktop. So the ratio of performance of the same hardware in desktop and in notebooks is higher for Intel than for AMD. In short, AMD’s mobile performance is closer to desktop than Intel’s, because notebooks higher than hundreds of watts do not cool down and have to decrease with frequency.
