Tim Cook reported Tuesday that Mac sales grew almost 18% year over year in the June quarter while the rest of the PC market shrank by nearly 2%.

And the Mac is the most profitable PC on the market. By far.

“Indeed,” writes Asymco‘s Horace Dediu, “it’s more profitable than all the other vendors put together.”

Here’s what that looks like:

Source: Asymco. Click to enlarge.
Operating margin = profit.

LINK: Asymco: Is the PC back?

Follow Philip Elmer-DeWitt on Twitter at @philiped. Read his Apple AAPL coverage at fortune.com/ped or subscribe via his RSS feed.