hard drive question, sata 1.5 and 3.0


In Runtime
im looking into getting a new hard drive. My motherboard supports sata 1.5gbs, the only 1.5gbs one I can find is a WD raptor 74gb for $125cdn..more than I want to spend. All the other ones are 3.0gbs, so my question is can i use a 3.0 in a 1.5 board? And will it be noticeabley faster than my Ultra ata 100 ide drive?

My IDE drive is NOISY, so i wouldnt mind even if it wouldnt be much faster.


Fully Optimized
yeah but he wont be able to reach sata 3.0 speeds only 1.5

SATA 3.0 has nothing to do with speed, it's all about thoroughput, unless things have changed since the last time I heard anything about it, SATA 3.0 is about as useful as PCI-E 2.0...