Though IBM managed to retain the top spot in the calendar quarter, HP emerged as the top vendor in 2007 with strong growth of 12.3%, managing to eclipse IBM for the first time on an annual basis since the acquisition of Compaq. HP’s growth in Q4 2007 was strongest in the ProLiant and Integrity areas, with Integrity revenue, including its NonStop products, now accounting for 24.6% of the total vendor revenue. IBM benefited from a robust uptake of both its Unix System p and x86 System x families in the last quarter of the year. Fujitsu Siemens Computers enjoyed very positive Primergy performance in southern Europe and finished the full year with a 1.8% revenue growth. Sun Microsystems saw revenue grow strongly in the SPARC Enterprise area, and Dell had strong growth across all geographies, particularly in France and Spain.
| Vendor | Revenue, Q4 2006 | Share, Q4 2006 | Revenue, Q4 2007 | Share, Q4 2007 | Growth, YTY |
| IBM | $1,974 | 37.4% | $1,966 | 36.0% | -0.4% |
| Hewlett-Packard | $1,631 | 30.9% | $1,752 | 32.1% | 7.4% |
| Sun Microsystems | $554 | 10.5% | $586 | 10.7% | 5.7% |
| Dell | $380 | 7.2% | $425 | 7.8% | 11.9% |
| Fujitsu Siemens | $357 | 6.8% | $340 | 6.2% | -4.9% |
| Others | $378 | 7.1% | $394 | 7.2% | 4.3% |
| Total market | $5,274 | 100% | $5,463 | 100% | 3.5% |
| Source: IDC | |||||