三星pm991参数？三星pm991固态硬盘是tlc？三星pm991参数？三星pm991采用三星Polaris V2主控，三星第四代64层堆叠V-NAND TLC闪存，512GB和1TB的版本均采用TLC闪存，走PCIe 3.0 x4通道，带宽高达32Gbp...