hi all! first time posting here. 😀 i'm a bit of a noob with retro hardware and i had a couple questions about a 486 i recently picked up from ebay.

i have an IBM PS/ValuePoint 433 DX/Si and it came in nearly immaculate condition save for some moderate dust buildup inside the case. i'm not sure if i want to completely max out everything i can quite yet, but i was mostly wondering where i'd be able to find some L2 cache/VRAM memory upgrades. the documentation i found online says the L2 cache sockets can support a max of 256KB, and the VRAM can be expanded to 512KB to make a 1MB total for the base 512K on board. i'm not 100% sure what i'm looking for, so if anyone here could put me in right direction of what to buy and look for, i'd really appreciate it!