what is the optimum amount of memory to install on a pentium ll running window 98
and a pentium lll running XPId say 512 is the Best youll fit in a machine like that , Never try to Run XP under 256 megs of ram, also XP will only just run on a PII you may find its quite slow,

Win 98 cant READ A Gig of ram, but i douth you would fit it on a PII mother board any way
I would put 2x256 in either machine, and try to make sure the ram chips are the same speed Ie: PC133 or PC100. Mixing ram can make your computer extra slowthanks panboyYou are Welcome, 512 is a good number for XP, on an OLD System and maby a bit high for 98 but more ram never hurtsFor the record Win98 can use more RAM, it is just inefficent. But there is a tweak you can use to counteract this somewhat.The optimum in either case is going to depend on what you use the computer for. For Win 98, 128MB will probably work quite well for the majority of users. If you think you need more, any combination totaling 192, 256, 384, or 512MB is an option unless the type of memory you have requires two modules of the same size; then, 128, 256, ....Agreed. 512 is overkill for Win98 unless you are using some demanding apps and especially for a PII.

Anything running XP works better with at least 512, especially with onboard video, but the need again depends on what you are running. For internet, e-mail and word processing only 512 is more than enough.

More is not necessarily better, it just depends what you want to spend your money on. In the end, the motherboard determines the maximum amount of memory that can be used.I BELIEVE you’ll find what I posted here is my opinion, there are not MANY programs that need more than 512 that will run on 98 there for I think 512 ID Good, also SD Ram is Cheep now , and there’s not point in getting less.