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Western Digital SA500 4 TB

4 TB
Capacity
88SS1074
Controller
TLC
Flash
SATA 6 Gbps
Interface
2.5"
Form Factor
Front
Back
Tom's Hardware
Back
Package
Tom's Hardware
Package
PCB Front
Tom's Hardware
PCB Front
DRAM
Tom's Hardware
DRAM
Flash
Tom's Hardware
Flash
SSD Controller
Controller
NAND Die
NAND Die
The Western Digital SA500 is a solid-state drive in the 2.5" form factor, launched on October 31st, 2019. It is available in capacities ranging from 500 GB to 4 TB. This page reports specifications for the 4 TB variant. With the rest of the system, the Western Digital SA500 interfaces using a SATA 6 Gbps connection. The SSD controller is the 88SS1074 Dean from Marvell, a DRAM cache chip is available. Western Digital has installed 64-layer TLC NAND flash on the SA500, the flash chips are made by Toshiba. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are soaked up more quickly. The SA500 is rated for sequential read speeds of up to 560 MB/s and 530 MB/s write; random IOPS reach up to 95K for reads and 82K for writes.
At its launch, the SSD was priced at 580 USD. The warranty length is set to five years, which is an excellent warranty period. Western Digital guarantees an endurance rating of 2500 TBW, a typical value for consumer SSDs.

Solid-State-Drive

Capacity: 4 TB (4000 GB)
Variants: 500 GB 1 TB 2 TB 4 TB
Overprovisioning: 370.7 GB / 10.0 %
Production: Active
Released: Oct 31st, 2019
Price at Launch: 580 USD
Part Number: WDS400T1R0A
Market: Consumer

Physical

Form Factor: 2.5"
Interface: SATA 6 Gbps
Protocol: AHCI
Power Draw: 0.41 W (Idle)
2.4 W (Avg)
3.6 W (Max)

Controller

Manufacturer: Marvell
Name: 88SS1074 Dean
Architecture: ARM 32-bit ARM9/ARMv5
Core Count: Dual-Core
Frequency: 400 MHz
Foundry: TSMC
Process: 28 nm
Flash Channels: 4 @ 400 MT/s
Chip Enables: 8
Controller Features: DRAM (enabled)

NAND Flash

Manufacturer: Toshiba
Name: BiCS3
Rebranded: SanDisk 60560 512G
Type: TLC
Technology: 64-layer
Speed: 533 MT/s
Capacity: 8 chips @ 4 Tbit
Toggle: 2.0
Topology: Charge Trap
Process: 19 nm
Die Size: 132 mm²
(3.9 Gbit/mm²)
Dies per Chip: 8 dies @ 512 Gbit
Planes per Die: 2
Decks per Die: 2
Read Time (tR): 80 µs
Program Time (tProg): 695 µs
Die Read Speed: 400 MB/s
Die Write Speed: 46 MB/s
Endurance:
(up to)		 3000 P/E Cycles
(30000 in SLC Mode)
Page Size: 16 KB
Block Size: 768 Pages
Plane Size: 2732 Blocks

DRAM Cache

Type: DDR3-1866 CL13
Name: MT41K512M8RG-107:N (D9RVX)
Capacity: 1024 MB
(2x 512 MB)
Organization: 4Gx8

Performance

Sequential Read: 560 MB/s
Sequential Write: 530 MB/s
Random Read: 95,000 IOPS
Random Write: 82,000 IOPS
Endurance: 2500 TBW
Warranty: 5 Years
MTBF: 2.0 Million Hours
Drive Writes Per Day (DWPD): 0.3
SLC Write Cache: Yes

Features

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

Reviews

Same Drive

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

Notes

NAND Die:

Read latency:
tR: 64µs (SBL)
tR: 80µs (ABL)
tPROG withoug Overhead: ~ 695µs (Avg) (~ 46 MB/s per die)
tPROG w/ ~25% Overhead: ~ 927µs (Avg) (~ 34.5 MB/s per die)
Jun 1st, 2024 08:10 EDT change timezone

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