@EricofSD: I just check the turbo box. Then the SVG renderer is activated, which comes with Luxrender 1.3. And SVG is GPU. Didn't test thouroughly yet.

(before Lux 1.3 the turbo checkbox was there in Reality already, but didn't work since the SVG was not installed unless you were running a test/beta of Lux 1.3)

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though