係黃金最平既512MB RAM要幾錢？？

512MB RAM
你咁問好籠統,亦明顯你不熟電腦
並不是想寸你,只不過電腦上的RAM有多種,單係一般桌面用及手提電腦用的RAM已經不同,再加上又分 SDRAM/DDR/DDR2, 你這樣問,如何答你是好??
512 / SDRAM, $350
512 / DDR, $300
512 / DDR2 $350
512 / SERVER SDRAM $200
你想加RAM或換RAM嗎? 你想問的是那種? 最平也未必合你的電腦用
找找主板說明書,查清楚可支援那種ram再決定

~$300

http://www.hkgolden.com/hardware_price/default2.asp?itemtype=MEMORY&vendor_id=KINGSTON&sort_by=M&I2.x=27&I2.y=17
the link above can help you, to get an idea.
look at the 512 MB for your motherboard, which type ...
DDR2 ?
and the price is listed.
Kingston is a reliable manufacture for RAM.
good luck