I got this card with the 486 DX2 system I recently bought. I was really disappointed when I found out it was a 1MB model though. Does anybody know how to go about upgrading it? I found a pic of a fully populated model, but it's a newer revision. I found the chips in the sockets listed for 8.50 each. I'm guessing that's the DRAM. But the others which i'm assuming is the VRAM I can't find for direct sale. They are V52C4258Z60 chips. Every site I find wants me to request a quote, probably for a large quantity. So what's the likelihood of being able to just put in these chips and upgrade my card? I don't see any jumpers and i certainly don't have an EPROM programmer and bios file.

Here's the link to the site with pics of newer card:
http://www.amoretro.de/2011/03/number-nine-9-gxe-vl.html

EDIT: forgot to post pic of my card