Without knowing the contractual details, I still find it sad that such a huge sponsor like Lenovo is having Williams pay for a supercomputer.
If I was corporate sponsor for a team like Williams, with it's history and upward performance swing, I would at least have it appear that it was part and parcel to their "partnership" (a McLaren term).
From the outside I would assume that Lenovo doesn't make the best supercomputers, with IBM leading that field, so they were locked in to using the Lenovo box.
Even if Vodafone doesn't give its handsets away for free to the team, it appears that way to the potential customers.