In the world of science, SI prefixes are sacrosanct. Well, unless you happen to be a computing scientist, in which case the choice of prefix—mega vs mebi—can be a little controversial. It turns out that one programmer at Valve fell on the wrong side of the prefix war when showing your CPU clocks in the Steam performance overlay, but at least it's all been fixed with a tiny patch.
Last week, Valve added a performance overlay to the current Steam beta, and I have to say that it's quite nifty-looking. You get frame rates, clock speeds, processor utilisation, and memory consumption (RAM and VRAM), all in a handy bar that you place around your screen.
