May 10, 2021

Adata XPG Gammix S70 SSD review: Fast, affordable, and trapped under a heat sink

The Adata XPG Gammix S70 is a very fast PCIe 4 NVMe SSD that’s also considerably more affordable than the competition. Alas, in a first for an NVMe SSD—there are some fitment issues due to a massive non-removable, pre-installed heat sink.  Thi...

The Adata XPG Gammix S70 is a very fast PCIe 4 NVMe SSD that’s also considerably more affordable than the competition. Alas, in a first for an NVMe SSD—there are some fitment issues due to a massive non-removable, pre-installed heat sink. 

This review is part of our ongoing roundup of the best SSDs. Go there for our top picks, and for information on competing products and how we tested them. 

Design and features

The drive inside the massive heat sink is your standard M.2 2280 (22mm wide, 80mm long) SSD using an Innogrit IG5236 controller, and 96-layer, TLC NAND. There’s 1GB of DRAM cache per terabyte of NAND, and about 33 percent of the NAND can be treated as SLC for secondary caching purposes—333GB for the 1TB version and 666GB for the 2TB version I tested. That’s with the drive empty; as it fills up, those amounts will drop. 

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