craig, keith is kinda right. and HT stuff is SIMILAR with the AMD northbidge stuff (which i find a bit complex tbh) you do indeed take the 200 then double this to 400 to get your 400 FSB :P (even tho theres no such thing as FSB anymore... fuk me its confusing )

so 200 x 2 x 5

dunno if thats right for his chip tho, altho i dont think there is a 333 fsb/nb on the amd stuff? i thought they oly went upto 200 (400/800 respectively)