It's tight on RAM (only 256MB main memory + 256MB VRAM, a large portion of which can be used as fast swap space, at least on Linux), the SPUs will sit mostly idle unless your software is specifically written to utilise them. Especially older models consume a lot of power, even when idle. A cheap Atom-based Nettop or NAS is probably better for home server type stuff.
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It's tight on RAM (only 256MB main memory + 256MB VRAM, a large portion of which can be used as fast swap space, at least on Linux), the SPUs will sit mostly idle unless your software is specifically written to utilise them. Especially older models consume a lot of power, even when idle. A cheap Atom-based Nettop or NAS is probably better for home server type stuff.