This card has the 486DX2, 66MHz. I have heard it can get a little toasty on its own so I may end up adding a fan. I might have a Cyrix 586 in my box 'o crap but I doubt I'll mess with changing it out. The stock should be totally fine for me. 

It didn't come with the software but I think the original disk images are on one of the Service Source CDs I have.