"Alex Hunsaker" <badalex(at)gmail(dot)com> writes:
> Hrm, I tried it on my x86_64 (quad core 2.66ghz, sorry no exotic
> machines here :)) and did not see any real noticeable difference
> between the two...
Thanks. That confirms my feeling that I was seeing some weird artifact
on my own x86_64 box.
regards, tom lane