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WD (2.5" 7mm)藍標SSD分三種不同容量250GB 500GB 1TB三款

WD (2280,是代表尺寸為長8cm寬2.2cm)藍標M.2 SSD和2.5" SSD一樣依不同容量分三款

WD (2.5" 7mm)綠標分二種不同容量120GB 240GB僅有二款

WD (2280,是代表尺寸為長8cm寬2.2cm)綠標M.2 SSD和2.5" SSD一樣依不同容量分二款

WD藍標和綠標SSD(與M.2 SSD)都是來自併購的SanDisk現有產品線上的改WD商標來用和原有SanDisk X400 SSD和X400 M.2 SSD一樣容量的產品完全相同

WD藍標SSD

Western Digital WD Blue Specifications
Capacity               250GB        500GB         1000GB
Form Factor 2.5" 7mm SATA or M.2 2280 SATA
Controller Marvell 88SS1074
NAND SanDisk 15nm TLC
Sequential Read    540 MB/s     545 MB/s     545 MB/s
Sequential Write    500 MB/s    525 MB/s     525 MB/s
4KB Random Read 97k IOPS    100k IOPS    100k IOPS
4KB Random Write 79k IOPS    80k IOPS      80k IOPS
Average Power 70 mW
Max Power 4.4 W
Encryption No
Endurance (TBW)     100 TB       200 TB        400 TB
Warranty Three years
MSRP                    $79.99         $139.99       $299.99

WD綠標SSD

Western Digital WD Green Specifications
Capacity                120GB                 240GB
Form Factor 2.5" 7mm SATA or M.2 2280 SATA
Controller Silicon Motion SM2256S
NAND SanDisk 15nm TLC
Sequential Read      540 MB/s             545 MB/s
Sequential Write      405 MB/s             435 MB/s
4KB Random Read   37k IOPS             37k IOPS
4KB Random Write   63k IOPS             68k IOPS
Idle Power 30 mW
Encryption No
Endurance (TBW)      40 TB                  80 TB
Warranty Three years

影響SSD壽命的製造NAND顆粒種類,有分三種,最好的SLC和其次的MLC和最壞的TLC三類,以最好的SLC因最貴產量少而被MLC取而代之,但近年便宜的TLC掘起,連intel的SSD產品也無發避免,最近上市的都是改良的TLC種類,以TLC類造的NAND顆粒SSD有廠商承諾的保固時間在期限內(不做BT下載,謹慎使用)不壞就不錯了.

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