[yccs27]

Are there any laptops that actually have a desktop GPU built in?

[bandrami]

Yes, and their battery life was usually a full one half of ten minutes

[mschuster91]

I've come across a few in the past, these 18 inch giant-ass "desktop replacement" / gamer things that had insanely large power bricks. Been a few years but I think they all had desktop GPU chips from NV.

But I think it's not possible to do any more, not with any high-power card that is... the RTX 5090 has a TDP of 600-ish watts, you can neither get in that kind of power into a laptop, even at 24 volt that's still 25 amps of current just for the GPU, and most importantly you can't get rid of 600 watts of heat, no matter what, without making the user uncomfortable.

[welferkj]

That's not the case. A 5060 has a 145W TDP, which is borderline feasible. A 5090 is 575W, which is approaching furnace territory.

[vel0city]

The most extreme I've seen are some laptops that have two 240W power supplies, and even then that wouldn't be enough to reliably power these extreme high end desktop GPUs these days.

[lmm]

Yes (at least there used to be), but obviously that has a certain effect on their battery life and cooling requirements.

[dahcryn]

at that point, it's about portability, not battery life

[cma]

I don't think they do it anymore, but for a while nvidia laptop GPUs of the same model number had more cuda cores to match the desktop model of same number, with the laptop's lower clock.

[dragonwriter]

The 3080 Ti laptop card has fewer CUDA cores but more VRAM than the desktop version.