First post, by pico1180
I currently have a Dell Dimension 486SX25B. Inserted is a picture of the specific motherboard. I found really good documentation over at The Retro Web with all the jumper settings I need. Except bus speed. I have successful swapped out the CPU for a 486DX-33 and 66. But of course it is at 25MHz bus, so speeds respectively were 25 and 50.
All the documentation I have seen shows this platform came with CPU's all the way up to 66Mhz. And the board has jumpers for such, but no documentation I have found speaks to how to change the bus speed.
Ionge story short, based off my findings, I suspect their has to be a way to change the bus speed, I just don't know what that way may be.