The GAMMIX S70 comes in a small red box. Along with a picture of the drive, the front advertises a number of its key features including its 1TB capacity, PCIe 4.0 interface, support for NVMe 1.4, SLC caching and 3D NAND. The back of the box provides a bit more information regarding the GAMMIX S70's features and performance.
The GAMMIX S70 uses the 2280 form factor for M.2 (NGFF) SSDs. It measures 80 x 25.2 x 15 mm and weighs in at 34g. The drive also has an "M key" edge connector which provides PCIe SSDs with up to 4x lanes of bandwidth.
The GAMMIX S70 is equipped with ADATA’s proprietary CoolArmor heat spreader design. This aluminum heat spreader features a terraced structure and hollow chambers underneath for increased surface area and airflow. According go ADATA, this design can reduce temperatures by up to thirty percent.
The CoolArmor heat spreader wraps entirely around the GAMMIX S70 and is attached using a couple of screws. While this ensures a solid fit, it also adds about 3mm to the overall width of the drive. This doesn't sound like much. However, you will want to make sure that the card doesn't hit a PCI slot or any of the other components on your motherboard. Also take note that the heat spreader is quite tall (15mm) and that it may interfere with your video card if your motherboard's M.2 slot is below it.
The GAMMIX S70 is one of the first drives to use Innogrit's Rainier (IG5236) controller. Designed for the high-end client and entry-level datacenter markets, this PCIe Gen 4 x4 NVMe 1.4 controller has 8 NAND channels that can run at up to 1200MT/s. The GAMMIX S70 also supports MLC, TLC and QLC NAND and features multiple data encryption and protection schemes including AES, ECC and end-to-end data protection.
For the 1TB version of the GAMMIX S70, ADATA has opted to use its own Micron manufactured 96-layer 3D TLC NAND flash. If you'd remove the heatsink, you'd find two 256GB NAND flash packages on either side of the PCB. The drive also has a single 1GB SK Hynix DDR4 SDRAM memory chip that is used for caching.