
Samsung 990 EVO Plus 4TB PCI-E 4.0 x4 NVMe M.2 2280 SSD
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The 990 EVO Plus is Samsung's mainstream NVMe M.2 2280 drive, here in a 4TB capacity. It runs PCIe 4.0 x4 or PCIe 5.0 x2, so it fits both older and newer laptops and desktops without wasting lanes. Samsung rates it at 7,150 MB/s sequential read and 6,300 MB/s write with 1,050K/1,400K random IOPS, using TLC V-NAND. It sits below the flagship 990 Pro on sustained speed but offers far more capacity per drive than most rivals at this tier, and it includes hardware AES 256 encryption with TCG/Opal and eDrive support.
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Owners of the 990 EVO line generally report it hits close to its rated speeds in everyday use and stays cool in laptops. The common complaint is that large sustained writes slow down compared with Samsung's Pro drives.
The Samsung 990 EVO Plus is a 4 TB NVMe solid-state drive in the M.2 2280 form factor. It uses Samsung V-NAND TLC memory and connects over PCIe Gen 4.0 x4 or PCIe 5.0 x2 (NVMe 2.0).
It reads sequentially at up to 7,150 MB/s and writes at up to 6,300 MB/s. Random performance at 4KB, QD32 reaches up to 1,050K IOPS for reads and 1,400K IOPS for writes.
The drive supports AES 256 encryption (Class 0), TCG/Opal v2.0 and MS eDrive (IEEE1667).






