[TruServe]

SA-MP generally uses very little RAM and CPU, however it does use more CPU then RAM, the computer itself will easily get away with 25 slots however the Network is arguable, for SA-MP you'd really want a minimum of 10MBit upload with 100Mbit or a gigabit being the ideal options. You should give it a try, it may not provide the smoothest experience but it should be adequate.

Thanks,
TruServe