ummm I think so.
I should've done more experimentation, but my seat of the pants feel is that it was worth at least a few mhz. Unfortunately, I changed out my cpu at the same time. I'm now running much higher fsb speeds thanks to my agoia 1600, (172 mhz). I'm not a particularily experienced overclocker, but on this system the only blue screen I've ever gotten says something about an unexpected kernel and then dumps the physical memory. That sounds like a mem issue to me but I'm not sure. I got that earlier with a 145 fsb and aggressive timings, and now get that at 174 with mediocre timings. I deduct from that that my tt active cooler is helping, but it would be a little tough to remove now.
Would like to push higher, but not sure how to.