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Re: Rarest CPUs?

If that’s a 433gp core like I think it is you can possibly get to 350mhz I wouldn’t try any higher than 2.4v though All MII with the same CPUID / register values are the same. There is no PR433 core, just cores that are capable of that speed, some of which were marketed as such. You could just as …

Re: Rarest CPUs?

The overdrive DX/2-40 was relatively common, but the plain version was indeed pretty rare. That was meant for portable devices, was it not? If that's the case, you'd only find them if you were salvaging laptops. At the time, a DX/2-40 on the desktop made close to no sense. But, then we have chips …

Re: Rarest CPUs?

Do you recall what the lot size was? Few dozen or few hundred? Few dozen but it seems like there were several similar auctions at the same time from different sellers. I bought a very strange uATX IBM labeled SIS540 motherboard from the same seller. I started digging and haven’t found either the …

Re: Rarest CPUs?

It was 50 pieces of NIB K6 III 550 that was found on eBay. It's not exactly a boatload. For a rare CPU, I'd call that a sizeable influx. I'm not aware of a similar situation for the MII-433GP. My guess is the MII-433GP is more valuable, but I haven't come across much sales data. A sizable lot of …

Re: Rarest CPUs?

I guess a large lot of SBCs or portable PC was scrapped and these silver tops were inside. My silver top pr433 came in the tray circa 2003, wish I knew where it went I was tempted to dig it out and test the IBM labeled SIS540 motherboard I obtained at the same time to see if I could determine why …

Re: Is there a Dual Head PCI video card?

http://www.verycomputer.com/418_13a0ab3f8d6a88a2_1.htm If you could find the engineer (Ross Bro) from there in living condition:0 As for me I remember dual screen going back since the dawn of time but can’t say any of the strange brands were memorable My folks Futura 100 photography system (circa …

Re: Rarest CPUs?

This is crazy, an AMD K5 PR200, look at the price, reached after the auction: https://www.ebay.com/itm/125228128174 I have an K5 PR166, which runs completely stable with PR200 speed, also with reduced VCore (3,52V>3,3V) and have payed about ~30€ for this CPU. One of my favourite Socket 7 gold …

Re: Is there a Dual Head PCI video card?

Isn't a better question here, Does Win 3.X / DOS have multi vga output support ? While there were even ISA cards with multiple VGA outputs, I doubt there was support for DOS or win 3.X. Just some specific programs like CAD/CAM design Especially since DOS is single tasking and win 3.x is barely more …

Re: Is there a Dual Head PCI video card?

Cornerstone should have had dual head video cards and I used them under windows 3.1 and 95 I had a “mono” cornerstone card with a 19” screen that also had an onboard color VGA device with a separate output. In normal use it would switch back and forth or drive both screens with the same image ( …

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