A:AnswerThe 13-ay0075nr model has a 256GB SSD vs 512GB SSD on the 13-ay0055cl. The 13-ay0075nr model has a higher max brightness display at 400 nits vs 300 nits on the 13-ay0055cl. The rest of the specs are the same.
A:AnswerIn theory, yes, it could be. However, it's pretty major computer surgery and really not recommended for someone who isn't experienced with laptop repair.
A:Answer4500u and 4700u are the same generation. 4500u is a 6 core/6 thread and 4700u is 8 core/8 thread. The 4600u and 4800u are 6core/12thread and 8core/16thread respectively. I have yet to see the superior 4800u or 4600u in any american laptops as of yet, but still looking.
A:AnswerThis HP ENVY x360 Laptop - 13-ay0075nr has the AMD Radeon Graphics. There is no specific number to the graphics installed. Here are the specs from HP: https://support.hp.com/us-en/document/c06649262