17 inch Sampo monitor using 1024X768 for desktop and 1024X768 for games,lowering it to 800X600 or even 640x480 if games didn't support 1024x768,videocard was geforce 2 mx with 32mb ram then a geforce 2 mx 400 64mb ram and processor was amd Duron 700mhz.

1024x768 and 640x480 and lower for games. I was still rocking a Pentium 133 with an S3 Virge at that point.

Early 2001, I had some cheap 15" CRT at 1024x768. It was very fuzzy doing that, but I did it anyway. In the 90's that seemed really high resolution, but by 2001 I think it was probably the most common.
Late 2001, but possibly early 2002 (not sure), I splurged on a 19" Trinitron G400. I ran that at 1280x1024 on the desktop, and 1600x1200 in games with a Geforce2 MX. That slowed it down but I thought it was worth it. My most demanding game was Ultima 9, and that didn't really need a high frame rate. I liked the detail. It's still higher res than my current monitor.
1600x1200 was fuzzy for the desktop but in games I thought it looked great. I was disappointed that monitor didn't last long.

800x600@85Hz on a NEC Multisync V521 15" CRT of my first computer which failed in 2006. It was my only and main monitor until I got a Philips 170S5 17" LCD in Christmas of 2004. I don't have to mention the difference between these two!
Back then, I was at the very first steps of computing as a child and around half of the average homes had actually a computer, so I was happy with any display.

Had an AMD K5 100MHz and an cirrus logic 1MB. Ran 1024x768 for desktop, played a hell lot of KGen98.

1280x720 75hz

1152x864/32/85hz for desktop and whatever the GeForce 2MX could handle for a particular game. Had a Belinea 17" CRT which was pretty expensive in 1997. Still have it in storage.

Windows resolutions:
1992 -1995: Two different noname monochrome VGA monitors, barely 12-13", CRT - 640 x 480
1995-1999: ADI Microscan 3E, 14", CRT - 650 x 480
1999-2003: ADI Microscan E55, 17", CRT - 800 x 600
2003-2009: Samsung Syncmaster B1930NW, 20", LCD - 1280 x 800
2009- : Asus VH242H, 24", LCD - 1920 x 1080 and Samsung Syncmaster B1930NW, 20", LCD - 1280 x 800

Game resolutions:
Whatever playable resolution the display adapter and the game supports

I think I was running 1024x768. And that's a nice resolution IMO. Just "feels" right for some reason, probably because I was running it for so long

I've had a decent 15" monitor between 1993 and 2000 which burned out (and recycled out). Forgot the brand, definitely was a noname, but supported 1024x768, had visible scanlines and was sharp with great colors, amber LED for power, knobs in a little opener panel under the screen and was energy star certified and never was identified in any PNP detection.

for me it wasnt higher then 1024x768. On a 15inch and later a 17 inch ADI microscan monitor.
On a pentium 1 the resolution wasnt higher then 800x600 32bpp

1600*1200@85hz in windows and games (if game support and if my graphic card (geforce 256) could) on CRT 19" A901HT iiyama.

In 2001 we had a PC with 800x600 CRT, and a laptop with 1024x768 TFT LCD. We've had this CRT since the mid-90's, and even now I still use it every day.