Report an Error

ADATA Ultimate SU900 1 TB

1 TB
Capacity
SM2258H
Controller
MLC
Flash
SATA 6 Gbps
Interface
2.5"
Form Factor
Front
Back
Back
Package
Package
SSD Controller
Controller
The ADATA Ultimate SU900 was a solid-state drive in the 2.5" form factor, launched on December 13th, 2016, that is no longer in production. It was available in capacities ranging from 128 GB to 2 TB. This page reports specifications for the 1 TB variant. With the rest of the system, the ADATA Ultimate SU900 interfaces using a SATA 6 Gbps connection. The SSD controller is the SM2258H from Silicon Motion, a DRAM cache chip is available. ADATA has installed 32-layer MLC NAND flash on the Ultimate SU900, the flash chips are made by Micron. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. The Ultimate SU900 is rated for sequential read speeds of up to 560 MB/s and 525 MB/s write; random IO reaches 85K IOPS for read and 90K for writes.
At its launch, the SSD was priced at 398 USD. The warranty length is set to five years, which is an excellent warranty period. ADATA guarantees an endurance rating of 800 TBW, a typical value for consumer SSDs.

Solid-State-Drive

Capacity: 1 TB (1024 GB)
Variants: 128 GB 256 GB 512 GB 1 TB 2 TB
Overprovisioning: 70.3 GB / 7.4 %
Production: End-of-life
Released: Dec 13th, 2016
Price at Launch: 398 USD
Part Number: ASU900SS-1TM-C
Market: Consumer

Physical

Form Factor: 2.5"
Interface: SATA 6 Gbps
Protocol: AHCI
Power Draw: Unknown

Controller

Manufacturer: Silicon Motion
Name: SM2258H
Architecture: ARC
Core Count: Single-Core
Frequency: 400 MHz
Foundry: TSMC
Process: 40 nm
Flash Channels: 4
Chip Enables: 8
Controller Features: DRAM (enabled)

NAND Flash

Manufacturer: Micron
Name: 3D MLC Gen 1
Rebranded: ADATA
Type: MLC
Technology: 32-layer
Speed: 50 MT/s .. 533 MT/s
Capacity: 8 chips @ 1 Tbit
ONFI: 4.0
Topology: Floating Gate
Dies per Chip: 4 dies @ 256 Gbit
Planes per Die: 4
Decks per Die: 2
Read Time (tR): 77 µs
Program Time (tProg): 1225 µs
Block Erase Time (tBERS): 15 ms
Die Read Speed: 820 MB/s
Die Write Speed: 52 MB/s
Endurance:
(up to)		 3000 P/E Cycles
(30000 in SLC Mode)
Page Size: 16 KB
Block Size: 1024 Pages
Plane Size: 548 Blocks

DRAM Cache

Type: DDR3L-1600 CL11
Name: NANYA NT5CC256M16DP-DI
Capacity: 1024 MB
(2x 512 MB)
Organization: 4Gx16

Performance

Sequential Read: 560 MB/s
Sequential Write: 525 MB/s
Random Read: 85,000 IOPS
Random Write: 90,000 IOPS
Endurance: 800 TBW
Warranty: 5 Years
MTBF: 2.0 Million Hours
Drive Writes Per Day (DWPD): 0.4
SLC Write Cache: Yes

Features

TRIM: Yes
SMART: Yes
Power Loss Protection: No
Encryption:
  • No
RGB Lighting: No
PS5 Compatible: No

Notes

Drive:

There is another variant with the Silicon Motion SM2258G which is basically the same controller but different package and contact pads (BGA).
The NAND Flash Bus operates between 533 MT/s ~ 667 MT/s,

NAND Die:

Program page without/with VPP: 1300μs/1225μs (TYP) (Max - 52 MB/s per each die)
Jun 1st, 2024 14:57 EDT change timezone

Latest GPU Drivers

New Forum Posts

Popular Reviews

Controversial News Posts