I found untested 486 motherboard for sale. Do you recognize what model motherboard this is?
Also I would appreciate if you would give me some advice how much it would be worth paying for.
Perhpas CHAINTECH 486SLB ?
New PC: i9 12900K @5GHz all cores @1.2v. MSI PRO Z690-A. 32GB DDR4 3600 CL14. 3070Ti.
Old PC: Dual Xeon X5690@4.6GHz, EVGA SR-2, 48GB DDR3R@2000MHz, Intel X25-M. GTX 980ti.
Older PC: K6-3+ 400@600MHz, PC-Chips M577, 256MB SDRAM, AWE64, Voodoo Banshee.
This is the only picture of chaintech 486SLB I was able to find online and it looks different.
http://pcrebuilding.altervista.org/images/res … fa_p1140336.jpg
It's a Chaintech 486SLB, but their part numbers don't seem to mean a whole lot. I've written about a 486SLP, a slightly more advanced model here. Yours is based on the same chipset and socket, doesn't support 3.45v CPUs (no VRM installed), only has two 72-pin RAM slots and can likely use a lot of cache RAM. It is probably identical to 4SLB, so you take a look at settings here .
Long story short: if this board is anything like mine, it should probably be OK for those who have at least some experience with 486 boards, but it's definitely not a great choice for beginners. It really gave me a lot of issues. Personally, I would look for something easily identifiable and with better documentation.
It is being sold for $24 and $8 for shipping, but I can try to offer less for it also. I'm just worried about it being sold as untested.
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The corrosion is a major risk... when the stuff made it to the keyboard connector it has also spread over other areas.
1+1=10
It probably has not been stored in a very good place considering how corroded that one screw is that is still in one of the holes of the motherboard.
I suppose the main question is if it is still worth trying to rescue. I don't know if it is considered a good 486 motherboard or if it just a motherboard which are common and easy to find in better condition.
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I offered him $12 + $8 while expecting him not to accept and it was a big surprise that the seller accepted the offer. I hope it isn't a bad sign that the motherboard is even worse than it looks.
Edit: I have to admit that cpu looks strange.
Thats a good deal even in case in doesnt work - keep us updated 😉
I don't find the CPU anything special. It's renamed Cyrix 486, runs at 5V and is about 5% slower then AMD or Intel on the same clock. Although it is a bit rare one.
Too bad the underside of the board isn't shown. But usually these work in about 85% of the time. Just make sure the memory is correct type (FPM) and in correct slot if it won't boot.
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https://www.amibay.com/members/kixs.977/#sales-threads
Can you use different 486 cpu on this motherboard that uses different FSB speed? I would actually want to replace the cpu with 33Mhz intel one if the motherboard works.
I think it looks like a Mylix MGI486.
wrote:I think it looks like a Mylix MGI486.
It is close except that boards seems bit bigger and some of the jumpers are missing from my pictures.
I just received the motherboard and took another picture of it.
It has some bent pins, but I have not found any that seem broken yet. The keyboard connector is bit corroded and I think the memory module is 4Mb. Battery is dead but doesn't seem like it has leaked much. The motherboard has alot of jumpers. I wonder if there is some kind of manual for those online somewhere.
