T-FORCE CARDEA ZERO Z440 2TB SSD NVMe M.2 PCIe 4.0 Gen4 x4 Gaming Review BTR recently received a 2TB T-FORCE CARDEA ZERO Z440 SSD from TeamGroup which is an older PCIe 4.0 Gen 4 x4 drive that appears to be particularly useful for motherboards with integrated NVMe heatsinks because of its thin graphene foil cooling.