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Kioxia XG8 2 TB

2 TB
Capacity
IG5236
Controller
TLC
Flash
PCIe 4.0 x4
Interface
M.2 2280
Form Factor
Front
Back
Tom's Hardware
Back
DRAM
Tom's Hardware
DRAM
Flash
Tom's Hardware
Flash
SSD Controller
Controller
The Kioxia XG8 is a solid-state drive in the M.2 2280 form factor, launched on April 26th, 2022. It is available in capacities ranging from 512 GB to 4 TB. This page reports specifications for the 2 TB variant. With the rest of the system, the Kioxia XG8 interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the IG5236 (Rainier) from InnoGrit, a DRAM cache chip is available. Kioxia has installed 112-layer TLC NAND flash on the XG8, 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 cache is sized at 160 GB, once it is full, writes complete at 1750 MB/s. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The XG8 is rated for sequential read speeds of up to 7,000 MB/s and 5,800 MB/s write.
At its launch, the SSD was priced at 190 USD. The warranty length is set to five years, which is an excellent warranty period. The TBW rating for the Kioxia XG8 2 TB is unknown.

Solid-State-Drive

Capacity: 2 TB (2048 GB)
Variants: 512 GB 1 TB 2 TB 4 TB
Overprovisioning: 140.7 GB / 7.4 %
Production: Active
Released: Apr 26th, 2022
Price at Launch: 190 USD
Part Number: KXG80ZNV2T04
Market: Consumer

Physical

Form Factor: M.2 2280 (Single-Sided)
Interface: PCIe 4.0 x4
Protocol: NVMe 1.4
Power Draw: 1.6 W (Idle)
4.0 W (Avg)
6.9 W (Max)

Controller

Manufacturer: InnoGrit
Name: IG5236 (Rainier)
Architecture: ARM 32-bit Cortex-R5
Core Count: Quad-Core
Frequency: 667 MHz
Foundry: TSMC FinFET
Process: 12 nm
Flash Channels: 8 @ 1,200 MT/s
Chip Enables: 4
Controller Features: DRAM (enabled)

NAND Flash

Manufacturer: Toshiba
Name: BiCS5
Part Number: TH58LKT3X25BAEG
Type: TLC
Technology: 112-layer
Speed: 1200 MT/s
Capacity: 2 chips @ 8 Tbit
Toggle: 4.0
Topology: Charge Trap
Dies per Chip: 16 dies @ 512 Gbit
Planes per Die: 2
Word Lines: 128 per NAND String
87.5% Vertical Efficiency
Read Time (tR): 56 µs
Program Time (tProg): 484 µs
Die Read Speed: 571 MB/s
Die Write Speed: 66 MB/s
Endurance:
(up to)		 3000 P/E Cycles
(100000 in SLC Mode)
Page Size: 16 KB
Block Size: 1344 Pages
Plane Size: 448 Blocks

DRAM Cache

Type: LPDDR4-1866 CL10
Name: NT6AN512T32AV-J2
Capacity: 2048 MB
(1x 2048 MB)
Organization: 16Gx32

Performance

Sequential Read: 7,000 MB/s
Sequential Write: 5,800 MB/s
Random Read: Unknown
Random Write: Unknown
Endurance: Unknown
Warranty: 5 Years
MTBF: 1.5 Million Hours
SLC Write Cache: approx. 160 GB
(dynamic only)
Speed when Cache Exhausted: approx. 1750 MB/s

Features

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

Reviews

Notes

Drive:

This SSD uses "Kioxia's TC58NC0L1XGSD Controller which is the innogrit IG5236"
The XG8 also supports power loss notification (PLN) through a PCIe sideband signal. This allows the drive to flush its data to non-volatile media before power loss through host initialization. This is not the same as power loss protection (PLP), which uses a battery or capacitor to protect data-in-flight. However, theoretically, PLN could be used with off-module PLP (OMP) to add this functionality.

NAND Die:

Although this Die is a 4-plane design, most Kioxia BiCS5 NAND Dies used in most SSDs are dual planes design because of Yield and production cost.
And because of the die being dual-plane the Throughput is cut in half to 66 MB/s per die.
There is no CuA (Circuitry under Array) in the Dual-Plane variant.
Typical Endurance: 1700 P.E.C.
Rated Endurance: 3.000 to 5.000 (up to) P.E.C.
Jun 2nd, 2024 17:24 EDT change timezone

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