Is the RTX 5070 Ti Laptop GPU enough for 1440p gaming?

Yes. At 2560 x 1600 it targets high frame rates in most current titles with settings turned up, and it can drive the 300Hz panel in esports games. Demanding ray-traced titles need upscaling to hold very high frames.

How does the Ryzen 9 9955HX3D compare with the Intel alternatives?

The 3D V-Cache helps in games that lean on cache, and it is strong in multi-threaded work. Intel's top HX chips trade blows in some productivity tests but run hotter in thin chassis.

Is the 300Hz screen worth it over a 165Hz panel?

For competitive shooters, yes: motion is clearer and input feels more direct. For single-player games the GPU rarely reaches 300fps, so a slower panel would look nearly the same.

Can I upgrade the RAM and storage?

The Strix G16 line uses SO-DIMM memory and M.2 slots, so both are user-replaceable. Check the exact configuration before buying, since some units ship with a single module.