|商品尺寸||8 x 2.2 x 0.24 cm; 5.67 克|
+ ￥90.28 运费及进口关税
+ ￥76.31 运费及进口关税
Western Digital Blue SN550 NVMe 内置固态硬盘 Gen3 x4 PCIe 8Gb/s M.2 2280 3D NAND 高达2,400MB/s WDS250G2B0C 250GB
- 借助下一代NVMe SSD提高系统性能
- Western Digital设计的控制器和固件可优化性能
- Western Digital 固态硬盘仪表板不断监控运行状况
将NVMe电源置于PC的核心，可提供闪电般的超响应性能。 WD Blue SN550 NVMe SSD的速度是我们优质的SATA固态硬盘4倍以上。 无论您是在工作、创造、休闲游戏还是处理大量数据，都可以利用此强大的内部驱动器的高速来更快地完成更多工作。 以经济实惠的M.2 2280尺寸提供高达1TB *的容量，现在即是更换NVMe的大好时机。 | * 1gb = 10亿字节，1TB = 1万亿字节。 实际用户容量可能会更少，具体取决于操作环境。
WD introduced a COLOR CODING system to help consumers determine which drives to buy.
- GREEN is the lowest cost drive, and you get what you pay for: slowest performance and not the best reliability
- BLUE is best used for everyday, mainstream consumer use.
- BLACK takes BLUE a notch further by providing the best performance suitable for gaming, photographers, and videographers.
- RED is designed for NAS (Network Attached Storage) where the drive is expected to constantly be on and could be accessed by multiple business users at the same time. As such, they are very reliable and affordable from a per-GB perspective.
- PURPLE was made for digital video recording, such as surveillance, as those drives are constantly being written to
My CyberPower-made desktop gaming PC, in fact, is running two Western Digital drives: a 256GB Black NVMe M.2 and a 1TB Blue SATA 2.5" SSD. What does NVMe, SSD, SATA, and all this jargon mean?
WHAT DO THEY MEAN? SATA, SSD, NVMe, M.2, etc...
Hard disk drives (HDD) are mechanical devices whose performance was primarily based on the RPM (revolutions per minute) rating. They were generally 5400 or 7200 RPM (and beyond) -- the higher the number, the faster it would usually perform. As with anything mechanical, they break down over time as the components age.
Flash-memory based Solid State Drives (SSD) were introduced in the 1990s and were VERY expensive. SSD promised resistance to physical shock, faster performance, lower heat output, and more silent operation. Even to this day, SSD still cost more than similarly-sized HDDs.
SSD and HDD connect to your computer via multiple interfaces. Relative to this WD drive, we are only concerned with the SATA and PCIe ones.
SATA can connect two drive types:
1. The physically-larger 2.5" SATA SSD (nowadays used in most laptops and desktop PCs)
2. SATA M.2 SSD (typically used in Mini PCs and laptops)
M.2 SSD can also be connected to the newer, significantly faster PCIe interface: those drives are known as NVMe M.2 SSD.
This WD drive is an NVMe M.2 SSD. Now note the "2280" number.
WHAT ARE THESE NUMBERS: 2230, 2242, 2260, 2280?
- The first two digits correspond to the width of the drive.
- The last two are the length.
In the case of this WD, it is 22mm wide and 80mm long. This is important to know, especially with Mini PCs where space is scarce. If you purchase a 2280 drive and the computer only has room for 2230, you would not be able to use the former.
Let's look at the PROS and CONS of this WD Blue SN550 drive.
- Excellent price
- Great performance at up to 2400 MB/s read (the PCIe interface is capable of up to 8 Gb/s)
- VERY Easy to install. Plug in to the appropriate PCIe slot and secure with a single screw
- Five year warranty
- Not as fast as my existing 256GB WD Black NVMe M.2 drive or Samsung's Evo SSD line
- Costs more than similar-capacity SATA HDDs (Hard disk drives)
- Performance started dipping around the 15-20GB transfer mark
- Because this WD NVMe drive is VERY high-performance (and more expensive than SATA HDD), I suggest using it to install Windows on so it boots and works fastest. Store your other data (such as applications) on the slower SATA M.2, and rarely-used things on larger-capacity, less expensive, but slower SATA HDDs.
- Before handling the WD NVMe, be sure you touch a grounded, metal object to remove static from your body. Of course, make sure the computer is powered off completely before installation.
NVMe is one of the highest-performance interfaces you can connect a storage device to. Cost has steadily been coming down, and it is not difficult to recommend this WD Blue SN550 drive to the average consumer for its excellent price and great performance. It is one of the top options for budget NVMe drives.
If you're expecting your Windows 10 (or Mac OS) boot times to be noticeably faster on NVME compared to booting on a standard SATA SSD, you'll be somewhat disappointed. While you may shave a few seconds off OS and loading of some apps, the overall performance improvement is only marginally better for NVME (vs SSD). If you're building a new PC however and want the best possible performance out of your OS boot drive, NVME is a good choice and it's not much more expensive than a SATA SSD. If you're considering NVME as an upgrade from SATA SSD, the performance gain is not quite substantial enough to make upgrading to NVME worth your time and effort.
Overall the WD Blue SN550 is priced very well and it does perform to specs. If you're looking for a speedy boot drive, especially on a newer motherboard that has built-in M.2 NVME slots, this product is a good choice. If you're looking for large amounts of storage for media or for backup, a SATA SSD or mechanical HDD remains the better value.
WD for it's size, skimped out on the cloning software. You can't assume people want to reformat and start from scratch. Also, you can't assume all customers are PC mechanics. I want to return it badly. I wanted to support an American company in WD. I see why Samsung just came in and became #1 immediately.