Upgrading key components in servers can significantly improve performance and capacity. The report tested upgrading components in Dell PowerEdge servers. It found that upgrading to newer Dell PowerEdge R720 servers with Intel Xeon and SSD components, Windows Server 2012, and 10GbE networking supported 4.5 times as many VMs as the older Dell PowerEdge R710 servers. Each individual component upgrade, such as the processor, storage, or network card, increased performance. But upgrading all components together maximized the number of supported VMs, database transactions, and email users.