It seems as PCI-Express 4.0 NVMe solid state drives have come into their own and are more mainstream we still haven’t seen a DRAM-less solution. Well that is changing today with the ADATA XPG ATOM 50, which combines the DRAM-less InnoGrit IG5220 4-channel Gen4 x4 controller with Micron 176-layer TLC NAND flash memory running at 1600 MT/s. Without the a DRAM chip you still get SLC caching using Host Memory Buffer (HMB) which uses your system’s DRAM rather than requiring a dedicated DRAM chip. With this configuration the drive offers sequential read and write speeds of 5000 MB/s and 4500 MB/s respectively.
Specifications
Capacity: 1TB
Form Factor: M.2 2280
NAND Flash: 3D NAND
Controller: InnoGrit IG5220
Dimensions (L x W x H): 80 x 22 x 3.13mm / 3.15 x 0.87 x 0.12inch
Weight: 9g / 0.32oz
Interface: PCIe Gen4 x4
Sequential Read (Max*):
Up to 5,000MB/s (PC/Laptop)*,
Up to 5,000MB/s (PS5)
Sequential Write (Max*): Up to 4,500MB/s*
4KB Random Read IOPS(Max*): Up to 650K*
4KB Random Write IOPS(Max*): Up to 600K*
Operating Temperature: 0°C – 70°C
Storage Temperature: -40°C – 85°C
Shock Resistance: 1500G/0.5ms
MTBF: 2,000,000 hours
Terabytes Written (TBW)(Max Capacity*): 650TB**
Warranty: 5-year limited warranty***
