Nope. It's an IBM AT. 80286, running at 6mhz.
Hm. And the Mac in the picture wasn't released until 1984.
So either the date attributed to the picture is wrong, or Bill Gates was photographed with advance editions of systems produced by IBM and Apple. Somehow I doubt that the NDA allowed that sort of thing...
I remember there was a Mac vs IBM debate in the dorms even back then! I bought a IIe in H.S. The teller at the bank asked the manager if I could take out $2200 in cash.
(It was my money!)