Transcend Memory introduced a high-capacity 4 TB variant of its MTE250H (with heatsink) and MTE250S (without heatsink) M.2 NVMe Gen 4 SSD that the company debuted in October 2022. The former comes with an extruded-aluminium heatsink, while the latter has a graphene-coated film on top of the hot components. The drive offers an NVMe 1.4-compliant 8-channel controller that uses a DRAM cache; paired with 3D TLC NAND flash memory. The drives take advantage of PCI-Express 4.0 x4 host interface. The 4 TB variant offers sequential transfer rates of up to 7.5 GB/s reads, with up to 6.7 GB/s writes; up to 540k IOPS random reads, and up to 440k IOPS random writes; along with a rated endurance of 3,120 TBW. Transcend is backing these drives with 5-year warranties.