Compact motorcycle travel PC

I’m looking for a small but powerful laptop, so around 13 inches. No Convertible. I can take my 17-inch ASUS with me in the plane, but it doesn’t fit into the TC or any of the K1300GT or F 800GS cases. It’s also heavy and bulky. I need a reasonably powerful computer for the upcoming tours, e.g. now 5 weeks Spain, to which I can transfer my GoPro videos in the evening. A mobile hard drive (1TB) goes with me, but the RePro should still be able to play my videos. For the high-resolution videos of the Hero5Black it also needs at least 4 GB of memory and a powerful processor. At least one USB3.0 interface has to be connected, a total of 3 x USB. I find myself in the Wust of the offers not right and also have little idea of the matter. Is there such a device fixed and ready and if, then, then, or you have to configure yourself and who can / does this possibly ? 1000 Euro for an apple machine t are too much for me. More than 4-500 should not cost. The less, the better. I don’t put any value on stamps. On 20.3. I leave.