When Western Digital first announced the WD_Black SN770 SSD, our initial thought was that this might end up being one of the best midrange drives on the market. Promising fast transfer speeds, a solid range of storage options, and an aggressively low cost, the SN770 appeared to be the perfect blend of performance and price. But could the real-world results live up to the promise of its marketing? To find out, we installed the SN770 in our PC testbed and put it through its paces.
WD_Black SN770: Design and Installation
True to its designation as a “gaming” drive, the SN770 features an all-black PCB with quasi-militaristic white and orange lettering, making it look like something out of the Call of Duty: Black Ops franchise. It comes in an M.2 2280 form factor, so it’s slim and features a low profile, and it’s DRAM-less, meaning it foregoes onboard DRAM in favor of NAND flash.
Now, onboard DRAM might sound worrisome but fear not. Gone are the days when onboard DRAM determined whether an SSD was super-fast or super-enfeebled. Thanks to Host Memory Buffer (HMB) technology, modern DRAM-less drives like the SN770 can achieve accelerated performance that rivals SSDs with an internal DRAM chip.
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