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讨论规则及指引
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Laptop 5090 offers about half of desktop 5090 performance but at a fraction of power consumption and with some level of portability.
Desktop is best you can upgrade it to a better performance
Also, even if the chips were exactly the same - iirc, they were on the 10-series but then they made the mobile chips a little different from the desktop counterparts again - they are ultimately limited by the thermal constraints of the cramped laptop form factor and limited power supply capability of the overall design.
It is good practice to regard mobile GPUs one or two classes below of what they are branded. So a 5080 Mobile would be more likely in the realms of a 5060 to 5070 desktop-equivalent + extra VRAM, depending on the laptop.
They are not completely pointless though.
If you are travelling a lot but get periods of rest where you want decent gaming performance (trucker, seafarer, construction worker, travelling businessman, etc.) or if you need a portable machine that can be a beast on demand (for example studying natural sciences or media), gaming laptops can be a good option for you, but might not always will be.
The existence of eGPUs nowadays also makes it less of a necessity to lug around a big and power hungry dGPU all the time.
Also, in some places, laptops might be an easier tax write-off for work and studies than a desktop PC at home, so there is that. But that's no tax nor legal advice. :D
The same goes for CPUs. They have lower wattage allowances compared to desktop counterparts.
The wattage budget is sometimes shared between the CPU and GPU.
Minecraft is typically very CPU limited, but it tends to become very GPU limited (and also much more CPU heavy) when playing with shaders. Your frame rate will likely drop to a fraction of what it is without them because of how they work. The game simply isn't designed for real-time lighting, so implementing it has a severe performance cost. But since the game can run so well without them anyway, it's one that can often be absorbed.
Since Minecraft is simultaneously a game that can bring the best hardware to its knees while also running on pretty much anything, it means you can usually adjust its settings (and sometimes your expectations) to get good results with it. The game will run well on the best laptops from today, but be aware you may need to be reasonable about some things.
If you don't need the portability or space savings, I'd consider a desktop. But as long as you aren't bothered by not having the same level of performance a desktop RTX 5090 delivers, the laptop may be preferable to you.
The other limiations of laptops is that they can not be upgraded except ssd while on desktop we do any upgrradre we want any time we want. The RX 6700XT 12 GB RED DEVIL that i have for example, is 360MM card and it released in 2021. On the 2017 case that ihave Aerocool 800 it barely fits as it takes the whole case(it fits up to 390mm graphics card). Since 5080 desktop is lot more powerful than mine card you can understand that it is impossiblet o fit such a powerful card on such small box like a laptop.
5080 desktop
https://www.techpowerup.com/gpu-specs/geforce-rtx-5080.c4217
5080 mobile
https://www.techpowerup.com/gpu-specs/geforce-rtx-5080-mobile.c4236
The only thin that is similar is the nvidia naming of a desktop card and laptop model with the same name. Performance wise they are miles apart.
yikes....my 5 year old 3080 has a 5% performance lead
https://www.techpowerup.com/gpu-specs/geforce-rtx-5090-mobile.c4235
when the flawed chips are still to power hungry we end up with things like the 5700x3d that is really a 5800x3d with cores that wont hit the same clock speeds....or the 5600x3d that had 1 or 2 whole cores that just did not work right.....
That said, you can get decent performance from a laptop, but, it ain't cheap..... and tends to be problematic. (overheating, etc.) Short battery life while gaming is also a given....