smtkr wrote on 2022-11-20, 19:33:
AlexZ wrote on 2022-11-20, 18:09:
I would attach a small fan on side of heat sink.
I see you've got a VIA 693 board. That will give you terrible performance with PII. If you care just about DOS then I would recommend getting a cheap early 440BX board with 3x ISA (100Mhz FSB only, no PIII support). If you want run Windows 98 on it then get at least mid 440BX board with 2x ISA. Mostly late 440BX boards are stable at 133Mhz FSB. Those usually have 1x ISA.
I mean, if you are running DOS, you're not hawking the difference in performance between a 440BX and a VIA chipset on a Pentium 2. You already have overkill performance.
This hobby of ours doesn't require absolute convergence on VOGONS' members collective preference for 440BX. It's all about experimenting. I love that people are messing around with other stuff.
Thanks for the info. I'll make sure to put a fan in there. I have to get some standalone pwm thermal controllers as there is little worse to me than a tiny fan running at full speed all the time.
Performance wise, thanks for the tip, but I think it is useful to quantify "terrible performance". From what I read we're talking about at the very worst 35%.
For the purpose of a late DOS, early Windows 98 games and various other non-performance intensive software this is perfectly fine. In fact I had an almost exact same setup back in the day with the exception of running a Celeron and a pretty cheap gpu(so it was even worse). However, having said that I do want an option to push this machine faster that's why I was trying to get a coppermine cpu running on it, but the highest this motherboard will go is 6x multiplier. So I'm getting a P3 600/100 (in all likelyhood it will sit in the drawer for the most time).
Also a big requirement for this build was an AT format (no atx) and isa slots due to wanting to use my NOS great AT tower case. Perhaps if I see a bx motherboard that fits those requirements I'll get it. For now I'm really happy that this p2 turned out to have an unlocked multiplier. So far I only could run it at 100mhz fsb so the lowest it went was 200mhz. If I do manage to get 66mhz working I woukd love to hook up the turbo button and the frequency display to switch between let's say 350mhz and 132mhz (not without reboot of course). That would be really cool.
If someone knows of a really good motherboard for slot1 in AT form factor that will run p2 as well as P3 coppermine (no longer than 5 slots). Please do let me know.