No...leave your FSB the same....the point of the article i think is that you can change the OC of the NB simply by lowering your multi on the cpu...that is wierd! If you leave the FSB the same, but lower your multi one notch, you will notice the chipset speed increases by almost 100mhz.
*ie- @ 400fsb and 8x multi on my cpu, the NB is 1:1 doing 400mhz also. Now lowering the multi to 7x, increase the NB speed to ~542mhz.
What that means is, you can overcome memory bottlenecks at certain FSB speeds, by adjusting your multi to increase or decrease the latency and speed of the NB. With every jump in the NB's strap, the latency values will change also and are noticable on the bandwidth tests.....but the latency doesnt change until the the strap changes....sooooooo setting your FSB and the multi on your cpu to attain a NB speed at the tip top of its strap, should produce outstanding results.
*Here are a couple of shots of my results @ 460mhz FSB 7x multi= 657mhz NB Attachment 35689