I've got a benchmark for the first 386 ever! I have several 386dx/16 cpus,bought some months ago from ebay. I couldn't find a way to test them. Two days ago a friend of mine gave me a motherboard with a ceramic 386dx/40 on a PGA socket. The problem was that it used RTC Dallas-like chip that it's battery had gone off, and my friend tried to remove the upper part of the chip, leaving exposed some pins on each side. The problem though, was that the chip was soldered on to the m/b. I tried to connect some wires on the chip, but couldn't reach them easily, so then decided to desolder the chip. After doing that very carefully, I was able to re-insert it or another, and tried some other chips I had. It worked with all of them, including two dallas chips, but it wouldn't save the settings, so it was still useless(it couldn't even save the floppy type, so it wouldn't boot). Today I bought some sockets for that chip, and soldered one where it should be, and with the original chip out of the m/b and exposed, I was able to solder some cables on the upper exposed pins, and voila it works! Then I wasted no more time, I removed the 80MHz crystal(which fortunately was socketed) and inserted a 33MHz one I had. I placed all my 386s one by one, and was very surprized and happy to see the working all! So I've made a measurement on 3dbench, using a very old trident 8800 I had, to see how a pc of that time performs. So the results are : Intel-80386DX-16-1-16-DTK-PEM0030Y-SYMPHONY 82C461-64kB-ISA-TVGA 8800CS-512kB-Markk-6.2
edit : right now I replaced both the crystal and the cpu with the 40MHz one, and the 3dbench score for the same system with the new cpu is 11.9.