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Each block connects via a set of magnetically aligned pins, which should make swapping out different components easy. However, it's not clear just how fast that interconnect is, nor whether the PC needs to be powered down to swap out blocks. That said, given that one of the blocks in development contains a graphics card upgrade, it should have plenty of speed and bandwidth on tap.

Aside from the GPU block, Acer will also be offering blocks with a 500GB or 1TB hard drive, wireless charging, a speaker and microphone, and bizarrely, even a projector. Some blocks like the hard drives can be used independently of the base unit. Acer says additional blocks will be "rolled out gradually," but there's currently no indication how often this'll be, or what's coming next. Individual pricing for these units hasn't been announced either.

Therein lies the biggest problem with a system like this: manufacturer support. While the idea behind the Revo Build is neat—particularly the upgradeable GPU, which has always been sticking point for small-form-factor PCs—how much you'll get out of it all depends on whether Acer continues to develop new blocks for it and support old ones. That's not to mention that blocks themselves need to be priced competitively, otherwise it might make more sense to just buy a regular external USB 3.0 drive and plug it into a NUC.

The Revo Build is certainly an interesting device, though, and—unlike Razer's similar, albeit larger Project Christine—it has an actual release date. The Revo Build is due for release this October, with prices starting at €249 (~£180) in Europe, the Middle East, and Africa, and in China for 1999 yuan. Acer is pondering a potential release in the US.