That is a very nice resolution for a DFP monitor IMO! A real PC resolution. Not the usual HD TV labeled as a PC monitor type.
1600x1200 was certainly popular around the Geforce 2 GTS era (that's like the year 2000). 1600x1200 CRTs were plentiful for gamers as far back as 1999. That was the only time games started being playable at 1600x1200 (except DOS games hehe), and Quake III was usually benched at that resolution in reviews (Geforce 3-4 cards had no trouble with Quake 3 @ 1600x1200 with AA). If you had a lower resolution monitor (1280x1024 or 1024x768 e.g.), you could apply anti-aliasing to compensate the lower resolution (AA wasn't used normally until Radeon 9x00 and Geforce FX era IMO). 1024x768 was probably the lowest many gamers aimed for (I did unless I wanted 140HZ or higher framerate in a Quake 3 railgun unlagged fest; people thought I cheated when I capped better framerates on my dedicated server 🤣), and considered to be good, up until direct X 10 became normal IMO.
Geforce FX is one of the unique nvidia cards that do support paletted textures (up to forcware 77.x I think). Couldn't get them working properly, but there's plenty of drivers to fiddle around with it; and I've heard people say FFVII will work with full paletted textures using the right driver on an FX card. This makes Geforce FX some of the best legacy cards IMO. I'm using the PCX5750 and it works wonderfully inside Linux; it rapes gzdoom. The only card I've seen give me more trouble in Windows than Linux, but I haven't tried Vista, XP, or 2000 either (only 9x, and Windows 7 with a hacked inf driver and Vista 64-bit drivers). I think the nouveau drivers might even be worth using. Geforce FX cards will run Half Life 2 great with full directx 9, but needs proper tweaking (excessive tweaking BTW no joke!); there's a lot involved and you have to find out on your own hehe.
For the record, Windows 9x would probably love that monitor. Maybe try VBEMP drivers on a modern GPU and try some Blood @ 1600x1200 hehe.