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[Daetrin]

We all know DF does not multithread. That's fine. But on my machine, a dual-core Athlon something-or-other, both cores go from 0-1% (idle) to 60-80% load when I run DF. I do have Win7 64-bit, so all I can figure is that it runs 32-bit stuff on an emulator, and that emulator somehow does multithreading. But that doesn't really make much sense itself...

And I've tested isolating it to one core. My FPS drops.  I'm not complaining, just confused. 

[Eagle_eye]

maybe it running in conjunction with whatever other programs are running puts the strain on your processors?

[Daetrin]

No, the 0% to 80% load jump happens with just DF up. I can push it to 100% and drop my FPS by running other programs (especially, say, Chrome with Youtube up).

[Sean Mirrsen]

Well, it IS possible to get multiple cores to work on a single unthreaded process, but that's hardware-dependant, last time I checked.

[BagelMan]

I've noticed the same thing. My guess is that some video card drivers are capable of doing some of the rendering work in a separate thread, which would not require any multi-thread support from the application calling it.