I'am looking to buy a ram(link:http://www.amazon.com/gp/product/B000FGD3WQ/ref=ox_sc_act_title_1?ie=UTF8&m=A2NDNAPHQ3UDKH. Can I buy this one for my PC. I'am currently using Zion 1GB PC2-5300 DDR2 RAM. But I don't know the speed(mhz) of it.

Should be fine.