Acer was surpassed by Lenovo in the third and fourth quarters of 2011.
| 
 IDC: Top-5 notebook vendors, 1Q12  | 
||
| 
 Vendor  | 
 Shipments (m units)  | 
 Global market share  | 
| 
 Hewlett-Packard  | 
 8.928  | 
 17.5%  | 
| 
 Acer  | 
 7.342  | 
 14.4%  | 
| 
 Lenovo  | 
 6.808  | 
 13.4%  | 
| 
 Dell  | 
 5.558  | 
 10.9%  | 
| 
 Asustek Computer  | 
 4.989  | 
 9.8%  | 
Source: IDC, compiled by Digitimes, May 2012