What voltage are you running the MII at with 300 MHz? And what voltage with 285 MHz? Normal voltage at 285 MHz, 2.2V. It's true that I could try 2.1V but with such a small margin for OC, I fear that I have no margin neither for undervolting. I tried at 2.4V (not the 2.3) and stopped at POST, I …

Hi all I haven't forgot about you, don't worry. :) So, I had some diffilculties with the first MB I bought, an ATC-5220 which refuse to boot with FSB above 66MHz, with a Cyrix MII-366 or a K6-2 400. Either it has a real problem either I'm a total idiot. I decided to buy another SS7 MB, and …

Just picked up a pair of ATX socket 7 motherboards with unknown K6 CPUs and some RAM. It's about 30 miles from me and arranged local pickup and offered him 35 USD and he went for it. http://www.ebay.com/itm/182493453074? Damn, most of the time, MS-5169 are to be sold at very high price on ebay. …

Well, unless I cannot read old MB manual, my ATC-5220 accept FSB only at 66 and 75 MHz ....

Sad update... After unmounting for some days the mainboard carefully, I tried again the same system and now the mainboard doesn't boot, just the fan running but no vga signal. I tried different ram, cpu, vga and whatever. Is it possible that having let the mainboard without the battery has ruined …

@Glitter: Did you try that new MII-366GP? Well, I have an issue with the delivery of the heatsink that was lost by the carrier. I will go to see my brother to look in his old stock what I can find. And of course, now that I bought nearly everything there is a very good offer on Ebay: http://www. …

Glitter: What is the intended machine of use and target software? I will try to set a dual boot, Win98 to play some games and BeOS/Haiku. Luckily, the MII-400's aren't too difficult to find as they are frequently mixed in with scrap gold lots. I found most of my MII-400's from scrap gold lots …

Yes, that must be the one I saw for sale in ebay france. A 2.9V one. Looked like new. Earlier he had a MII-400GP there as well. I wonder, are the 2.2V MII chips made with another process, or just selected from the normal 2.9V production? The strange thing is that there is nothing in between 2.2V …

Perhaps you could look into the Cyrix MII, there are 2.2v parts which run up to 300MHz and are actually fairly cool. No need to underclock and you'll have better performance (and a real Cyrix!) as well :) Well, I would be very happy to find one these CPU, but either I'm not looking at the right …

Hello everyone I started to buy parts (mainly on ebay) to recreate a "not so vintage" PC using a Cyrix cpu (because I liked that brand) and after rereading test on old website, there is often the problem of heating that is pointed by the reviewer. - Most motherboard can have several voltage setting, …