How do you tell a real hardware geek from a crowd of dilettantes? The genuine article will be found reading a review of over a hundred PC power supply units. As for the true hardware geek, he's the guy that wrote it...

Step forward then, Belgian Stephane Charpentier, who's just published an evaluation of 105 PSUs (in French), including models from well-known names like Zalman, Thermaltake, Spire, Coolermaster, Corsair and Akasa, and a host of other brands you might not be so familiar with.

This magnum opus - there's no other phrase for it - stretches to a whopping 140 pages. Now, we know one or two UK hardware enthusiasts who can rattle on for 40 or 50 pages on graphics chip programming esoterica or the marvels of motherboard construction, but this one takes the cake.

And the winner is? Well there are several - non-modular, modular and fanless - but how could we tell you now and spoil your chance to show the world your true degree of geekiness? Get reading, hardware fanboy...