by now, my system is on the "lower end" running a GF Ti4800 128 MB video card and all, on a 17" CRT (non flat)
without gun zoom a bogie 200 yards in from of my gunsight is only 1/2" in size, and I can barely make out hit shape against the ground or water. up to the sky it is a bit better, as i can clearly see his outline then.
I won;t be upgrading my PC any time soon, as i don't have money to do so, and i will have to go ground up, MB processor, memory, video, power supply, all that.
add in looking through the "opaque" gunsight, I'm lucky i can see the enemy planes at all.