The NP6XLite is a new iteration of NP6 technology that supports more features than the standard NP6 processor. For example, the NP6XLite can offload AES128-GCM and AES256-GCM encryption for IPsec VPN traffic. The NP6XLite has slightly lower throughput (36Gbps) than the NP6 (40Gbps).
The NP6XLite includes 4x KR/USXGMII/QSGMII and 2x(1x) Reduced gigabit media-independent interface (RGMII) interfaces.
The NP6XLite is a component of the Fortinet SOC4. The SOC4 includes a CPU, the NP6XLite network processor, and the CP9XLite content processor that supports most CP9 functionality but with a lower capacity.
Some FortiGate models, such as the FortiGate-200F and 201F include a SOC4 but only use the NP6XLite processor. FortiGate-200F and 201F CPU functionality is supplied by a separate CPU and CP9 functionality by two separate CP9 processors. See FortiGate 200F and 201F fast path architecture for more information.