A:AnswerI upgraded mine with Samsung products, for both the SSD and the RAM. They were compatible and work perfect. The brand inside that Asus used is HK Hynix. You can probably put any 4.0 Nvme M.2 SSD brand. The RAM I've heard people having compatibility issues with. Just match it with the model description on the part inside. I think it's- 1Rx8 PC5-4800B-SAO-1010-XT. Shop with that part description and you should be good. Check it yourself though, maybe my laptop came different than yours.
A:AnswerUnfortunately, you cannot use DDR4 in DDR5 slots, but the good news is that prices on DDR5 4800 memory for this device have come down significantly.
A:AnswerLooking at the ASUS website the screen does not seem that much different from the 4070, 4080 or 4090 model except for brightness in NITS. I think the advantage on the 4080 would be the 12GB vs 8 GB of video memory. I don't know your use case. Is this your only PC? If so, maybe it makes more sense to spend a little more. A 4070 desktop is way better than a 4070 laptop GPU so they really should call this a Moble or M4070, M4080, M4090. It's a little misleading as they GPU die is smaller on the mobile. I would look on YouTube for reviews on the 4070 vs. 4080 laptops and see if the performance difference justifies the price increase for you.
