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The WD Black SN750 comes in a small, black box. Along with a picture of the drive, the front advertises a few of its key features including its 1TB capacity and maximum read speed. The back of the box doesn't provide much more in regards to information. However, there is a small window that lets you see the drive and view the model name and serial number. Inside, you'll find the SSD as well as a small guide containing technical support and warranty information.
Physical Features:
The WD Black SN750 uses the 2280 form factor for M.2 (NGFF) SSDs. It measures 22 x 80 x 2.38 mm and tips the scales at a mere 7.5g. The drive also has an "M key" edge connector which provides PCIe SSDs with up to 4x lanes of bandwidth.
Like the WD Black NVMe, the new WD Black SN750 uses Western Digital's Spectrum (20-82-007011) controller. According to the company, the controller is built on the 28nm process and features a tri-core design. The Spectrum is also equipped with a number of hardware accelerators, or sequencers, that handle things like NVMe command processing, data transfers and both power and thermal management. By offloading these tasks, the controller is able to deliver greater performance, while reducing power usage and latency. To top it all off, the Spectrum supports the latest version of SanDisk's nCache technology which improves sustained write performance by allowing data to be written directly to TLC NAND if the SLC cache is full.
For the 1TB version of the WD Black SN750, Western Digital has opted to use its own SanDisk manufactured 64-layer BiCS 3D TLC NAND flash. Looking at the picture above, you can see that there are two 512GB NAND flash packages on the top of the PCB. The drive also has a single 1GB SK Hynix DDR4 SDRAM memory chip that is used for caching.
