Is the RTX 5070 enough for 1600p gaming?

Yes for most current titles at high settings, especially with DLSS enabled. The most demanding games will need settings lowered to hold a smooth frame rate at native resolution.

Can I upgrade the RAM later?

No. The laptop supports up to 32 GB, which is what this configuration ships with, so buy the memory you need up front.

How does it compare with the Legion Pro 5i Gen 9?

The Gen 10 moves to the RTX 5070 and a newer Intel CPU, giving more headroom in demanding games. The chassis, screen size and 5.4 lb weight carry over largely unchanged.

Is the screen good for work as well as games?

The 2560 x 1600 resolution gives plenty of room for documents and code, and the matte finish cuts glare. Color accuracy is fine for general work but not aimed at professional photo editing.

What ports does it have?

It includes USB-A, USB-C and HDMI, enough for a monitor, headset and peripherals without a dock. Check the exact mix on the configuration you buy, since Lenovo varies it by model.