Lenovo, aiming to keep its position as the the world’s top PC seller, has introduced upgrades to its signature ThinkPad line of notebook computers which now offers thinner and lighter machines and longer battery life.

The China-based company, which operates an executive headquarters in Morrisville, overtook Hewlett Packard in the second quarter to become the world’s leading provider of PCs, according to research firms Gartner and IDC. That emergence as the top PC vendor came at a time of shrinking PC sales in the overall market. All PC vendors saw their second quarter sales shrink; Lenovo’s sales fell less compared to its rivals.

But Lenovo’s President of North America Jay Parker told WRALTechWire in July that the PC maker still sees growth opportunities and will continue to invest in its PC business. The company said that new ThinkPads offer new high resolution displays, processor upgrades and powerful graphics. The ThinkPad T440p and T540p are “premium business notebooks” with battery life up to 13.7 hours and 12.5 hours respectively. The ThinkPad W540 is just 27 mm and 5.45 pounds, which Lenovo says makes it the thinnest and lightest in its class.

Lenovo is working to diversify beyond PCs including a concerted efforts to build up its server business. On Wednesday, the company announced at the Intel Developer Forum two new tower servers: the ThinkServer TS140 and the ThinkServer TS440. The new servers are intended to be affordable and scalable for small to medium-sized business.

“Lenovo is very focused on SMB customers and we recognize their unique IT challenges,” Roy Guillen, vice president and general manager, Enterprise Product Group, Lenovo, said in a statement. “They require enterprise-grade server capabilities in a form factor and cost bracket that works for them.”

Lenovo also announced at the forum that its latest ThinkStation workstations will use Intel’s new Xeon Phi technology. Lenovo said that the processors will offer 15 percent faster performance compared to previous generations.