Adata XPG Gammix S70 Blade SSD review: A worthy Samsung 980 Pro rival


Adata’s XPG Gammix S70 Blade is the second fastest NVMe SSD we’ve tested, bettering Samsung’s excellent 980 Pro by a smidge—the drive it replaces in the number two spot. It’s also PlayStation 5 compatible and offers a large improvement in real world performance over its predecessor, the previously reviewed and fast-in-its-own-right XPG Gammix S70.

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

Design and features

The Blade omits the massive, permanent (in terms of warranty) heat sink that made the older S70 unsuitable for laptops. It instead opts for a thin heat spreader that’s included in the package, but not pre-attached. The second big change is a switch to 176-layer TLC NAND, replacing than the 96-layer NAND found in the S70. Otherwise, it’s the same standard M.2 2280 (22mm wide, 80mm long) SSD using the same Innogrit IG5236 controller.

There’s still 1GB of DRAM cache per terabyte of NAND, and about a third 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. As the drive fills up, those amounts drop. 

s70 blade front with heat shield Adata

Adata’s S70 Blade opts for a thin heat spreader and 176-layer NAND rather than the massive heat sink and 96-layer NAND utilized by the older S70.

As you might guess from that last paragraph, the drive ships in two capacities: 1TB (currently about $150 at Amazon), and the 2TB version (currently around $300 on Amazon) Both carry a five-year warranty and are rated for 740TBW (TeraBytes that can be Written) and 1480 TBW, respectively. 


Though it couldn’t quite match the mighty (and mighty expensive) Seagate FireCuda 530 overall, the Adata S70 Blade did manage to best it in CrystalDiskMark 6’s write test. It held its own in a number of other tests, and bested or ran neck and neck with Samsung’s excellent 980 Pro in a number of other tests. 

Note that Adata issued a firmware update post-testing that promises an uptick in performance. 

adata s70 blade cdm6 IDG

The S70 Blade actually outpaced the otherwise top dog FireCuda 530 in CDM 6’s sequential read test. Yowser. Longer bars are better.

In the 48GB transfer tests shown below, the Adata S70 Blade place third. Well behind the FireCuda 530, but only a shade off the 980 Pro

adata s70 blade 48gb IDG

Nothing beats the FireCuda 530 when it comes to real world read and writes, but the S70 Blade acquitted itself quite well. Shorter bars are better.

Those PCIe 4 numbers are also a massive improvement over the older S70, whose real-world performance over the latest generation of the transport technology didn’t quite match its gaudy synthetic benchmark results. See below.

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