Lets look at it...
My PC* is about one year old now. I bought it last summer as a "put together yourself" PC, so I could get exactly the parts I wanted. I chose an Intel Pentium 4 550 (3.4 GHz) processor, which wasn't bad at that time, but not state of the art either, I don't know how old it was at the time. For my video card I chose the GeForce 256 Mb 6800GT, which was about a year old, but one of the best, since the 7800 series and the ATI equivilant hadn't come out. For my RAM I chose 4x512 Mb (2048Mb ~ 2 gigs) of PC3200 (DDR 400), 2 gigs was quite a lot a year ago. The rest was just average stuff, 200 Gb maxtor harddisk, 400 Watt powersupply... (so on)...
That makes my PC look like this:
Intel P4 550 (3.4 GHz) - "Okay" by todays starndards, but far from good!
GeForce 6800GT, 256 Mb GDDR3 - Mid range today I'd say, bear in mind this is two years old!
2048 Mb PC3200 (DDR 400) RAM - Still good today, I don't know wether or not PC3200 is still the fastet, but 2 gigs isn't bad.
On-board AC97 soundcard. (:P)
And how do I run this un-optimized demo:
1280 x 1024 - 85 Hz
4X AA
8X AF
All settings maxed out
All AI settings at 50%
Result, an average of 15 FPS, on a two year old video card and an average processor.
My conclusion is that, that isn't bad on un-optimized software, with amazing graphics.
If you like, post your FSX experience in terms of graphics, settings (including AA and AF, should you use that) and your essential hardware.