HI
If the Chipset is set for DDR (DDR1) than DDR wont work,it wont key in to fit. DDR1 is more expensive cos the older the product is the more expensive it becomes, specially when it comes to pc's technology.
DDR2 wont fit on you 845 mobo. when buying RAM also check for the highest speed that your chipset supports witch in youre case is pc133,or you can go with pc100.
cheers
Reputation Points: 102
Solved Threads: 46
Nearly a Posting Virtuoso
Offline 1,312 posts
since Apr 2008