How powerful is a modern top-end gaming laptop compared to a desktop PC? As you know, in the current generation of mobile Radeon and GeForce video cards, such adapters are not identical to desktop cards of the same name.
In particular, the Radeon RX 6800M is a copy of the Radeon RX 6700 XT, only with a lower TDP. The source decided to compare these two accelerators in games and programs in order to understand how a laptop can replace a desktop PC in these tasks.
For starters, both cards are based on a Navi 22 GPU with 2560 stream processors, 12 GB of GDDR6 memory, a 192-bit bus, and 96 MB of Infinity Cache. For the Radeon RX 6800M, the GPU power is declared equal to 145 W with the possibility of increasing through a number of technologies, and for the RX 6700 XT, the power of the entire card is 230 W. Of course, with such a difference in power limits with identical characteristics, the desktop card should be faster.
And tests show it is faster. But the difference in performance in games is ultimately small. On average, at 1440p this is only 10%, and in some games it is only 2-6%. At the same time, in some games, the mobile RX 6800M bypasses the mobile RTX 3080 and is almost always faster than the mobile RTX 3070.
But with applications, the situation is much more interesting. Here the source compared not only video cards, but also CPUs. In this case, the mobile Ryzen 9 5900HX and the desktop Ryzen 7 5800X, which are very similar in terms of parameters.
Here the source did not display the average value, but we see that in some cases the difference is colossal and amounts to 50-75%. But still, in most applications, it is in the range of 2-10%.
As a result, we can conclude that in most scenarios, the mobile PC lags behind the closest desktop PC by a modest 10%, and this is impressive. Yes, there are applications and games where the gap is larger, and sometimes it is much larger, but still these are more likely exceptions.
Of course, in normal times, the desktop side is not only more flexible in assembly and upgrades, but also the price. However, now the prices for desktop video cards are such that sometimes it is more profitable to buy a laptop.
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