"compatible serial number" is key here too I think - I did not expect my OR840 to support 512MB RIMMs at all. Fair points, though, and worth a try. I will swap sets and run memtest86 again after I'm confident in the first round of testing. Edit: the system so far seems stable with 1GB installed. …

Got the BIOS updated without incident. Interestingly: I figured, well, the board boots with 128MB sticks - what about all the other RIMMs I now have on hand :lol: 2x 256MB Samsung PC800-40 non-ECC, 2x CRIMM - boot 2x 512MB Samsung PC800-40 ECC, 2x CRIMM - boot!! can we go 4x 512MB Samsung PC800-40 …

Thanks again for the software/BIOS/docs repo! The struggle with Rambus is very real.. however my OR840 finally sprang to life with four Elpida PC800-45 128MB sticks installed. It is currently on BIOS 0219.P03. Going to try to get that updated and then see if I can lay down my Windows 2000 RIS image …

Shoot - looks like I have an earlier board that will not support 512MB RIMMs. I wonder what the change was? Kind of puts a hole in my plans, but I suppose Lubuntu should still work with 1GB RAM. Windows 2000 will have no issue of course. Anyway, thanks for posting all of these materials! Very …

Sadly the board still does not boot with two Samsung 256MB PC800-40 RIMMs and two CRIMMs. Arranged per the product guide, I still get the 1-2-6 beep code. On the upside, the beep code does change as expected if I put both RIMMs on one channel, for example. I also get a beep code with the Quadro2 …

doogie , my bet is your machine is using an old BIOS which will not recognize the 512MB RIMMs. You should "invest" in 4x128MB RIMMs anyways since you will need them when flashing the newer BIOS. Barring some ACPI issues (specially if I switch my expansion cards too much while testing) the machine …

Aha! A PCI video card did the trick to confirm my suspicions, allowing the board to produce this beep code: 1-2-6 Memory not supported (unsupported memory technology) Also, I might have missed it, but after a bit of searching I finally found the product guide/manual - I didn't see it posted in the …

A new challenger approaches.. :happy: I'm attempting another take on the Maximum PC Dream Machine 2000 build, and just picked up my own OR840 (Intel retail, in box even!) which honestly looks to have never been used. I have yet to get it to POST, and the BIOS version is unknown - here's the current …

Yet another comment on that #9 card - I actually had one of those back in the day! Seeing the box brings back such great memories. Thanks so much for sharing your build.

Hey all - long time lurker. Wanted to first of all thank many people here for the gobs of knowledge, in particular Phil for his excellent YouTube videos.. I've started with essentially Phil's "Fast PIII" build. I had AMD processors until I switched to the 2nd gen Core i, so this is fantastic to me. …