I forgot I had 4x128MB 72-Pin EDO SIMMs from MemGate. I gave these a try and despite the 256MB official maximum memory, 512MB works just fine in this board. I am really glad I remembered I had these and was able to use them. My motherboard has the latest 1.00.18.CS1 BIOS . I hope this info helps anyone else with this motherboard.

So is there any performance degradation?

kixs wrote on 2025-04-05, 21:15:

So is there any performance degradation?

So far I don't see any difference in performance except for the fact that 512MB makes Windows 2000 run much smoother. Now one thing to consider is these MemGate 72-Pin 128MB EDO SIMMs are newly made in Sep 2024 and work at both 3.3v & 5v. This could be the reason they work as well as they do.

After running the computer for more than a few hours the computer has become unstable. I am reverting back to the 32MB 72-Pin EDO SIMMs I was using. Too bad, but it was just too good to be true.

jasa1063 wrote on 2025-04-05, 23:32:

After running the computer for more than a few hours the computer has become unstable. I am reverting back to the 32MB 72-Pin EDO SIMMs I was using. Too bad, but it was just too good to be true.

Maybe the RAM chips were really meant for 3.3V and were overheating with 5V?

Does this board have any jumpers (even soldered ones that they decided not to tell you about) to change the RAM voltage?

shamino wrote on 2025-04-06, 04:20:

jasa1063 wrote on 2025-04-05, 23:32:

After running the computer for more than a few hours the computer has become unstable. I am reverting back to the 32MB 72-Pin EDO SIMMs I was using. Too bad, but it was just too good to be true.

Maybe the RAM chips were really meant for 3.3V and were overheating with 5V?

Does this board have any jumpers (even soldered ones that they decided not to tell you about) to change the RAM voltage?

There are no jumpers for ram voltage on this motherboard that I am aware of or can find in the documentation.

After doing a lot more testing, I think this is boiling down to using a Compact Flash card to run Windows 2000 on this motherboard rather than a memory issue. I installed a fresh copy of Windows 2000 SP4 and had issues with the the TCPIP.sys driver loading on boot and getting a blue screen. I had also installed a bundled version of Windows 2000 SP4 that had all the hotfixes and some additions and had less luck with that one. I installed both running at the stock 200MHz. I am currently running Windows 98 SE with the CPU @233MHz and it has been stable. I put the 512MB back and will continue to run it and see if I have any issue. As to the higher capacity ram and performance degradation. It ran SpeedSys and there was no difference in memory performance. Screen shots are included.

I looked through my inventory and I had a 128GB DogFish mSATA SSD in a mSATA to IDE enclosure with a 44 to 40 pin adapter with power. I installed Windows 2000 SP4 with all the updates and so far no issues. It was trying to use a Compact Flash card with this motherboard that was the issue. I can now say 512MB with this motherboard is definitely a go!