One kilogram of sheet aluminum has an embodied energy of ~89 kWh, and steel is about a fifth of that. Glass and plastic are an order of magnitude smaller again.
You could do a rough estimate by estimating how much of your computer is each of those basic components, and then adding what you think the processing and transportation energy costs are. For comparison, a computer running at 150W 24/7 for five years will use ~6.57 MWh.
Right now, my best guess is that the total embodied energy of a desktop computer will be on the order of about 10 MWh.
Blue sky : thanks for the reply. If you ever get those numbers I'd be *very* interested to see them.
As for the 10 MWh to build a desktop, I must say I doubt it is that much.
What do you think manufacturers pay for energy? Let's assume it's 100% electricity, and they only pay 0.05$ per KWh.
10 MWh @ 0.05 $ / KWh = 500$ of embedded energy / desktop. My new LE-1200 desktop cost me half that...
But then again, averaging over many..