Re: Gateway DX4200
Actually, you are in pretty good shape. The only things you could really do would be to upgrade the CPU, upgrade the graphics card, and/or upgrade to Windows 7.
Searching around I found several who have upgraded theirs to a Phenom II 965 X4 without a problem.
I am guessing you upgraded your power supply to run the 4850 since the original is only 300W. Your PSU will be the limiting factor for a new GFX card, or you could upgrade that, too.
Windows 7 is worth upgrading. You could go with a fomat and install or upgrade Vista to &. I have done both and both worked fine. Upgrading in place won't erase your stuff unless something goes horribly wrong.
My Rig: SABLE
Antec 300 Illusion / Antec EarthWatts EA650 650W / EVGA GTX 760 2GB
AMD FX 8320 x8 Black Edition / Gelid Tranquillo / MSI 970A-G43
Sandisk Ultra Plus 128GB / Samsung 840 120GB / WD Black 750GB / WD Green 1TB / WD Red 3TB
G.SKILL Ripjaws 2x2GB DDR3 1600 - Crucial Ballistix Tracer 2x2GB DDR3 1600
Win7 Ult 64-bit - Func MS3 Mouse - CM Storm QuickFire Rapid Mech Keyboard
R.I.P. Danny L. Trotter
... 14 Nov 1945 - 4 Sept 2009