That sounds really strange to me... does your board not have a 40mhz FSB or a 2X multiplier setting?
As for the video card, the Cirrus GD-542X were decent, but if that STB card is one of the ones with an S3 chipset, that's what I'd look at first.
STB card is a "Powergaph VL-24". I always thought S3 was garbage. The on-board card in my ValuePoint, in fact, is an S3, and I disabled it to override it with a VLB. It seems to be confused as to whether it wants to be a monochrome VGA or color VGA card - there's a jumper for it, but it boots up monochromatically no matter which way you jumper it. Games work in color on it (or at least did a while back when I got it). So would you say that the on-board S3 (likely VLB) should trash any other VLB card barring a Tseng that I can find?
The board doesn't have 40mhz operation, only 33mhz as far as I can tell. It has two jumpers related to the CPU, one of which toggles between "DX" and "DX2" (1x to 2x multiplier, I suppose). The other of which toggles between "DX" and "OD", which I presume means Overdrive (the socket is labeled P24T, meaning it would accept one). No matter what combination I put these jumpers in, the multiplier will not go above 3x on my Am5x86.
Any idea if MediaGX will accept a graphics card upgrade? I have a MediaGX motherboard but don't have a VGA cable for it
I haven't got my hands on mine yet, but I'd wager two things:
1. The card onboard is as good as you're going to get for a 486 system, considering the age of the MediaGX tech.
2. If you can disable it in the BIOS, which is possible, then yes you can replace the card, but I doubt that they make MediaGX boards with any expansion slots, considering the integrated peripherals. I could be wrong on that, however, and I hope I am, because that means mine may well have a PCI slot that I can put a NIC in.
What do you mean by "I don't have a cable for it"? Do you not have any CRTs sitting around, and need a VGA cable to hook it up to a multi-input LCD of yours? The cables cost about $15 at Walmart, so go get one if that's the case.
Can we get some pictures of your MediaGX board?