I have an old emachine T2542 with a Celeron 2.5 Processor 400 MHZ FSB. The spec sheet states that it uses PC 2100 memory but when I ran a Aida32 System progam, it stated that PC 2700 ram was installed. Three years ago I went ahead and installed more 2700 ram and everything is well.
As the motherboard will accept up to 2GB, I'm looking at adding more. However, I began thinking that since PC2100 was specified, that my purchase should be the 2100 to boost performance.
Our other desktops are more current brand names, but this unit is used on occassion by others.
Your help is greatly appreciated.