according to the manual I'm reading the GX1 max RAM is 384mb. Win98 has issues with over 512mb anyways and for DOS 128mb is overkill. From what I'm seeing as well your built in video is an ATI Rage pro which is adequate for gaming but it depends on what you want to do with it. A TNT2 or better yet a Voodoo 3 would be better gaming video cards for the era if your going for a Win98 build.
I can likely supply you with whatever parts you need. let me know. PS/2 keyboards and mice are a dime a dozen at any of your local Goodwills. or buy a ps/2 to USB adapter on Ebay for a few bucks if you fancy that route.
for sound I would suggest a PCI card that uses the Vortex2 chip such as the Monster mx300 or a sound blaster audigy 2ZS. These are great Win9x cards and have decent compatibility with late 90's DOS games. If DOS is more your goal go for an ISA sound card such as an AWE64 or a sound blaster 16
I have a 212 on the way so I'll let you guys know if it helps. I did notice the 64 pro i'm using now doesn't quite fit over the entire CPU and though it came out before the AM3 socket and officially only supports AM2 CPU's I don't think theres any size difference between AM2 and AM3 chips.
Its a new build. put the whole thing together maybe 3 months ago. I turned down the graphics settings for some games and it seems to have helped a little. I think I'm going to grab one of those Hyper 212s and reseat everything as well as make sure I apply the paste as suggested. I could use the 64 pro cooler in my media PC fx-6100 rig anyways, that stock fan is loud.
At idle I'm averaging about 30 C give or take 5 degrees but when I'm playing something that like say World of Warships for instance it can spike to around the 60 C mark and up which probably why I get that buzz warning since its set to go off at 70 C. The ambient temp in the apartment is always room temp or lower and I have two case fans around the CPU one blowing up and one out the back. The Freezer 64 Pro is an old CPU cooler but it looks pretty identical to Hyper 212 so I'm not sure what advancements the hyper has that will make it much better. I'm also using arctic solver thermal paste. From my research 62 C is the official safe temp but in reality it should be OK up to 75 C but I really don't like it hitting up against that temp.
Ive been running an FX-8350 at stock speeds for a few months now. The stock heatsink/fan was way to loud so I ended up putting on a Freezer 64 pro which is an older cooler but seems pretty hefty and quiet. Unfortunitly I don't think its doing a great job as when I'm playing some games I'm getting pretty high temps and at times my PC will make a odd buzzer sound which I'm assuming is some kind of warning as it only happens when the CPU is under heavy load from a game. the air from the case fan blowing out is pretty warm so usually I just exit the game and alls well. That said its pretty annoying and I don't want to kill the CPU so can anyone suggest a good air cooler that's not to expansive? I do not plan on overclocking.