我個底版同條ram有冇撞呀?

Asus P4S533 SiS 645DX Motherboard
有D咩其他型號RAM會支持到??
Supports PC-2700 (DDR-333) Memory
example : Kingston 2GB (2 x 1GB) DDR 333 (PC 2700) Dual Channel ...

PC266 256MB DDR RAM is too slow la, but it can fit into the slot,
Memory Speed: 133MHz DDR266/PC2100
you need DDR-333, 333MHZ to fit this new broad o ...
ok, if you want to give it a try ... but no gurantee on performance ...
if you can put it in the slot, mostly it will works :)
ok, you need to do a diagnostics from the BIOS, to check
if all the RAM is there, and the RAM check passed ...
then you are fine ...
Remember something like XXXX KB OK when the machine first start ?
those are the RAM check ... you need to enable the FULL DIAGNOSITC mode
from the BIOS, f10 key will give you the configuration change, every BIOS is different but work similarly.
Go to Golden Center, people will know how to take care of you

hope all helps ...