Is there any scientific advantage in running the long runs over the short runs?

I'm currently running short runs exclusively (the non-long runs) because the NATHAN WUs lag the graphics while the short runs do not (minimizing on Win7... etc).

I figured since both have different impact on system performance, both must be doing different things, thus different scientific research, right?

I run long runs if my hardware can finish them within 24 hours. I think this keeps the short runs available for others whose hardware is slower/older. I feel that this keeps the lesser cards able of participating for longer, but maybe the scientists would just make more short runs if the need arose?

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XtremeSystems.org - #1 Team in GPUGrid

I run long runs if my hardware can finish them within 24 hours. I think this keeps the short runs available for others whose hardware is slower/older. I feel that this keeps the lesser cards able of participating for longer, but maybe the scientists would just make more short runs if the need arose?

+1
when running older cards, I couln´t run the longer units, so I do prefer to keeps the short runs available for other with older hardware aswell.

The lag is very annoying though. But the 50% bonus makes them worth it.