I agree with rowdy, the quality of computer stand contstruction is all over the place. I've seen some made of particle board engineered no better than a paper airplane and others build like a brick chicken house. You'll have to be your own judge in the end and many would say "better safe than sorry."You're talking a tenth of a tonne on a CPU desk, as a qualified structual engineer I would have to advise you against it, it really is worth buying a proper stand, having said that I have seen some big sturdy CPU desks that might be suitable but its up to your own judgement really!