Will an external solid states drive improve speed on basic laptop in which wasn't built for gaming?

Looking to buy my friend a external SSD card to help him out.
My group are all on the same platform for gaming and the only way he can play is to go play on a Lenovo 150, which is obviously incredibly slow. So I'm just wondering would an external ssd help him out even slightly.

Does that incredibly slow laptop have usb 2 or 3? A usb 2 external drive won't be faster than an internal.

An SSD would only improve load times, not the game's performance itself as the CPU and GPU are what control how well the game actually runs. Even then, it'd have to replace the internal drive or use a USB 3.0 connection to be able to make a difference.

It'll do nothing to improve either his graphics speed or the speed at which his operating system works. I suggest the effect will be slight if noticeable at all

No. My guess is its already maxxed out, and it goes as it does because thats the fastest it can go. Add ing more stuff would simply slow it down. It doesn't have a proper cpu its a netbook for browsing and email.

Just to confirm what's already been said, an SSD won't improve CPU or GPU performance, it will only help with loading times (O/S and games).
Also because it's external you probably won't be able to use it to boot O/S, so it won't speed that up either.

An internal SSD would help game speed IF AND ONLY IF that game very frequently brought in something from the disk during active play. Otherwise, no speed change would be visible.