Back in the day.... in the 90's and early 2000's I would almost always modify the cooling on any case I used. […]
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Back in the day.... in the 90's and early 2000's I would almost always modify the cooling on any case I used.
That case is just begging for a 120mm exhaust fan hole in the top of the case and an intake in the bottom front of the case - looks like it already has a mount for a bottom front fan.
Also, better airflow and lower noise could be had by cutting out the super restrictive fan grill in the back of the case. Mount a fan there as an intake fan there as well.... if you add a 120mm exhaust fan to the top of the case that is.
Wil those couple mods, you should end up with a case that has internal temps staying at or very close to ambient temps.
Since you are going PIII, I say go for a PIII 1.4s. Why bother with a slower one? Not like there are any games that are going to be speed sensitive that you would be playing on a slower PIII.
You just need a motherboard that can support the Tualatins. You could even go with something like an ASUS P2B-DS (Dual Slot-1 with onboard SCSI). An updated BIOS will give you Tualatin support and you will just need compatible Slotkets to complete it.