Hi! Need to get a faster p4 for my pc but its tricky. Its an dell dimension 4550, and dell wants to sell me an 2.8 for 3000 nok, About 500 us dollars. Crazy, crazy ,crazy

. But the worst thing is that they will not give me any informatin about howe to find out what prosessor i should get if i want to go somewhere else. This pc is deliverde to me without any manual for the mother board so im stuck. the prsossesor they want to sell me is P4 2,8 M (Eastman MLK P4 Northwood 2.8/533) part nr. 2U374. And i manage to squice out of them that my motherboard is d-stepping( dont hawe a clue what that means

).
Got an offer from another suplier who wants to sell me an: "Intel Celeron D 340 2.93 GHz Boxed PC533 Socket PGA478, 256KB cache" for about 120 us dollar wich they(komplett.no) think will work and I feel tempted. But howe can find out if this is right. Any sugestions? The reason for wanting a new prosseor is that i want to squice out the last juice from my pc so i can get more from out of my radeon 800. If anyone hawe any ide about what i should do to get things just a little faster than 2.4, or howe i can get the specs i need pls reply.