The AMD Phenom X4 9850 (125W) was a desktop processor with 4 cores, launched in July 2008. It is part of the Phenom X4 lineup, using the Agena architecture with Socket AM2+. Phenom X4 9850 (125W) has 2 MB of L3 cache and operates at 2.5 GHz. AMD is making the Phenom X4 9850 (125W) on a 65 nm production node using 450 million transistors. The multiplier is locked on Phenom X4 9850 (125W), which limits its overclocking potential.
With a TDP of 125 W, the Phenom X4 9850 (125W) consumes a lot of power, so good cooling is definitely needed. For communication with other components in the system, Phenom X4 9850 (125W) uses a PCI-Express Gen 2 connection. Although the processor doesn't come with integrated graphics, certain motherboards with compatible chipsets can provide this capability.
Hardware virtualization is available on the Phenom X4 9850 (125W), which greatly improves virtual machine performance.