Can a System76 Wild Dog 6 (from 2010) benefit from a PCIe SSD?

[watchpocket]

I have a 2010-era System76 Wild Dog desktop workstation, the Wild Dog Performance model 6 (wilp6).

Would this box's motherboard have adequate PCIe interconnects such that a PCIe NVMe SSD would fully function at the speeds they're known for?

Or is this model sufficiently old such that its motherboard has old-style connects that won't allow speeds higher than if I just used a SATA SSD?

In other words, would it make sense to install a PCIe NVMe SSD into this unit to get the higher speeds of a PCIe SSD? Thanks.