I have a msi 2800mhz motherboard how much memory can it take

[mab1966]

i have a msi motherboard 2800mhz /intel pentium4 2.8ghz
running 512mb ram.how much memory can i add

 

[daswilhelm]

depends on the motherboard. can you provide the make and model?
if its a p4 its probably sdr, which wouldn't be worth an upgrade, unless you can get it on the cheap.