Which do you prefer, NVDA and AMD?

$NVIDIA(NVDA.US)$ $Advanced Micro Devices(AMD.US)$
The big news in semiconductors Tuesday, after all, was Cowen's recommendation of AMD's larger competitor, Nvidia (NASDAQ:NVDA), which Cowen named a "top pick" in the industry based on projections the company could earn $28 a share in 2030, and book $140 billion in revenues. But as StreetInsider pointed out, Cowen's report actually noted that "we make NVIDIA our new top pick, along with AMD"