In a FortiGate-7000E chassis, FPM-7630E NP6 network processors combined with the FortiGate Interface Module (FIM) Integrated Switch Fabric (ISF) provide hardware acceleration by offloading sessions from the FPM-7630E CPUs. The result is enhanced network performance provided by the NP6 processors plus the removal of network processing load from the FPM-7630 CPUs. The NP6 processors can also handle some CPU-intensive tasks, like IPsec VPN encryption/decryption. Because of the ISF in each FIM module, all sessions are fast-pathed and accelerated.
The FPM-7630E processor module is an update of the FPM-7620E processor module with the same architecture but a newer CPU configuration. You can mix FPM-7630Es and FPM-7620Es in the same FortiGate-7000E chassis. In an HA configuration, both chassis in the HA cluster must have the same FPM modules in the same slots.