Computer chips are not selling so well:

AMD Posts Wider-Than-Expected Loss; Shares Tank

Chipmaker Advanced Micro Devices posted a wider than expected loss and disappointing margins on Tuesday, sending its shares spiralling more than 12 percent lower after-hours.

Margins for the second quarter were 37 percent, close to the 38 percent they hit in the year ago period but behind the 43 percent of the first quarter.