well I just ordered my replacement board and I hope its a lot better than the P4T533!
I've went for a P4B-533E (I know I cant believe I stuck with Asus either!) and 512Mb of Corsair XMS3000 Cas2. If I can hit 120FSB Ill get DDR320 which isnt bad, wish I had gone for a 533 chip now, doh!
The 400FSB 2.5 was good for Rambus but on DDR my overall speed aint gonna be great. In fact I reckon my 1.8A on this board (P4T533) will be faster than the 2.5 on a P4B533E, but the 2.50 cant be RMA'd just because I bought the wrong chip for its future mobo, lol.