From your link:

also known as: Hsing Tech 80486 VIP, PcChips M915i, Amptron DX-9200

Sorry dude.

Welcome to PC(not)CHIPS!

Thanks mates, as I guess, it has fake chips. I will contact to seller to convince him to burn on fire and to send to the hell this mobo.

😁

😈

The stickers should be a dead giveaway to the craptastic nature of this board before you even look at anything else. PCChips put stickers with respected name brands on top of their generic chips to make them sell better. Redhill guide has all the info on them.

http://redhill.net.au/b/b-bad.html

Nice board to frame and hang on the wall just for the lulz, but not if you're intending to do a fastest 486 speedrun.

Most probably the seller didn't even notice the scam himself. These were actually a pretty good scam, usually the BIOS of these was manipulated so it would even report the nonexisting cache to be "fully functional".

🤣 @ the write-back marking on the "cache" 🤣

I have a few 486 boards too, and want to check if the cache chips are fake or not. None of the chips, including the BIOS are soldered down on my boards.

But as I have learned this means nothing, because some later generation boards included socketed fake cache... 😳

So, what benchmarks should I use with a DX2 66 to reveal a freud (if any), and what to compare with? Should I use feipoa's 486 benchmark tables ?

Just CACHECHK. It will tell you if the cache is real or not, and isn't fooled by what the BIOS reports.

Thanks, I will try that!

I have a Percomp board (Amptron DX-6900 clone) that I am suspicious of,
it looks like the PC Chips one on Redhill (no real UMC chip)...

sliderider wrote:

The stickers should be a dead giveaway to the craptastic nature of this board before you even look at anything else. PCChips put stickers with respected name brands on top of their generic chips to make them sell better. Redhill guide has all the info on them.

http://redhill.net.au/b/b-bad.html

Nice board to frame and hang on the wall just for the lulz, but not if you're intending to do a fastest 486 speedrun.

There's a 2nd bad 486 board on hred hill here: http://redhill.net.au/b/b-96.html (not on the "bad motherboards" page) with those "write back cache" plastic rectangles onboard. 😉

Interestingly, it seems that PC Chips briefly entered honestly-good-quality motherboard territory at the end of the 90s with the likes of the (apparently rock-solid) PC Chips M571
http://redhill.net.au/b/b-99.html (3/4 down the page) . . . and then went right back to crap with a late-revision of that same board.