Does SL really utilize both CPU cores?

I've been wondering about the 32/64 bit and multi-core technologies. So we've had the availability of 64bit technology for over two years, yet the new O/S only now exploits 64bit technology. I ran multiple tasks; video, internet speed tests, etc. and monitored via Activity Monitor. It didn't seem to me SL uses both cores independently. Does anyone know if SL uses both CPU cores for multiple independent tasks or processes?

To All,
I would like to add an addendum to Edmund's latest post, as quoted below. This will, perhaps, illuminate what will occur now, and the possibilities for the near future...
2) as pointed out by someone else if app used Grand Central services. Can't imagine many do yet.
Again keep in mind MULTIPLE apps, even if single threaded, will be assigned to balance out core/CPU loads. And the kernel/OS itself will use the multiple cores for various services used by the applications.
This is all true, and I would like to highlight that no third-party applications yet take advantage of GCD (none of which I am aware).
However, we can almost certainly assume that many of the underlying components of SL, and probably all of those newly "Cocoa-ized" SL applications (including the Finder) will be taking advantage of Grand Central. The benefits will apply directly to all the "native" processes, and will carry over to third-party processes even if only by virtue of the native ones "getting out of the way."
If you have 3 single-threaded processes actively consuming CPU cycles, and you have two cores, the ability to "packetize" and dynamically dispatch even one of them allows the other two to be handled more efficiently and smoothly.
We haven't even started mentioning OpenCL. This is still waiting in the wings, for the most part, but what I have seen so far is... almost shocking. There are a few rudimentary "benchmark" apps floating about that do use OpenCL (all command line), and what they show is that my 8600M GT will complete in less than 2 seconds a "general computing" calculation that it takes my 2.5 GHz "Penryn" CPU 14 seconds to complete (using both cores!).
So, the question becomes: "How much of Snow Leopard is taking advantage of OpenCL?" I think none of it. Not yet. Whether or not we begin to see the leveraging of OpenCL in updates to SL remains to be seen. Let's not step over the line with speculation, here
Scott

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