Report an Error

Western Digital Black SN770 2 TB

2 TB
Capacity
WD 20-82-10081
Controller
TLC
Flash
PCIe 4.0 x4
Interface
M.2 2280
Form Factor
Package
Package
SSD Controller
Controller
The Western Digital Black SN770 is a solid-state drive in the M.2 2280 form factor, launched on February 2nd, 2022. It is available in capacities ranging from 250 GB to 2 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the Western Digital Black SN770 interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the 20-82-10081-A1 Polaris MP16+ from WD, a DRAM cache is not available. Western Digital has installed 112-layer TLC NAND flash on the Black SN770, the flash chips are made by Kioxia. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are processed more quickly. The cache is sized at 740 GB. Copying data out of the SLC cache (folding) completes at 560 MB/s. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The Black SN770 is rated for sequential read speeds of up to 5,150 MB/s and 4,850 MB/s write; random IOPS reach up to 650K for reads and 800K for writes.
At its launch, the SSD was priced at 269 USD. The warranty length is set to five years, which is an excellent warranty period. Western Digital guarantees an endurance rating of 1200 TBW, a typical value for consumer SSDs.

Solid-State-Drive

Capacity: 2 TB (2000 GB)
Variants: 250 GB 500 GB 1 TB 2 TB
Overprovisioning: 185.4 GB / 10.0 %
Production: Active
Released: Feb 2nd, 2022
Price at Launch: 269 USD
Part Number: WDS200T3X0E
Market: Consumer

Physical

Form Factor: M.2 2280 (Single-Sided)
Interface: PCIe 4.0 x4
Protocol: NVMe 1.4
Power Draw: 1.0 W (Idle)
3.3 W (Avg)
4.9 W (Max)

Controller

Manufacturer: WD
Name: 20-82-10081-A1 Polaris MP16+
Architecture: ARM 32-bit Cortex-R
Foundry: TSMC FinFET
Process: 16 nm
Flash Channels: 4 @ 1,600 MT/s
Chip Enables: 4
Controller Features: HMB (enabled)

NAND Flash

Manufacturer: Kioxia
Name: BiCS5
Type: TLC
Technology: 112-layer
Speed: 1200 MT/s
Capacity: 1 chip @ 16 Tbit
Toggle: 4.0
Topology: Charge Trap
Dies per Chip: 16 dies @ 1 Tbit
Planes per Die: 2
Word Lines: 128 per NAND String
87.5% Vertical Efficiency
Read Time (tR): 56 µs
Endurance:
(up to)
3000 P/E Cycles
(100000 in SLC Mode)
Page Size: 16 KB
Block Size: 1344 Pages

DRAM Cache

Type: None
Host-Memory-Buffer (HMB): 64 MB

Performance

Sequential Read: 5,150 MB/s
Sequential Write: 4,850 MB/s
Random Read: 650,000 IOPS
Random Write: 800,000 IOPS
Endurance: 1200 TBW
Warranty: 5 Years
MTBF: 1.8 Million Hours
Drive Writes Per Day (DWPD): 0.3
SLC Write Cache: approx. 740 GB
(dynamic only)
Cache Folding Speed: 560 MB/s

Features

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

Same Drive

This section lists other SSDs in our database using the exact same hardware components

Notes

NAND Die:

Typ. Endurance: 1700 ~ 3000 P.E.C.
Typ. pSLC Endurance: 50.000 ~ 100.000 P.E.C.
Typ. Endurance eTLC: ~ 6.000 P.E.C.

Oct 5th, 2024 02:12 EDT change timezone

New Forum Posts

Popular Reviews

Controversial News Posts