UFS

SK hynix ZUFS 4.0

Zoned UFS 4.0 storage sustaining flagship smartphone performance over time

Mass ProductionZonedFlagship
SK hynix ZUFS 4.0 — UFS BGA

SK hynix · UFS BGA · Image: skhynix.com

UFS 4.0 with zoned storage management, holding sequential reads above 4,000 MB/s while reducing long-term fragmentation.

Interface
UFS 4.0
Form factor
UFS BGA
Capacities
256 GB512 GB1 TB
01 — Overview

In the Mobile & Embedded portfolio

ZUFS 4.0 applies zoned storage concepts to mobile flash: data with similar lifetimes is grouped into zones, cutting write amplification and the performance decay that fragmentation causes over a phone's life. Sequential reads exceed 4,000 MB/s on the UFS 4.0 interface.

SK hynix positions ZUFS for flagship devices running on-device AI, where sustained storage responsiveness affects model load and app launch times measurably. Capacities span 256 GB to 1 TB in the standard UFS BGA footprint with low-power states preserved.

02 — Specifications

Verified specification

Figures as published by SK hynix. Availability and firmware options are confirmed at quotation.

InterfaceUFS 4.0 (MIPI M-PHY 5.0, 2 lanes)
Form FactorUFS BGA (11.5 x 13 mm)
Capacities256 GB, 512 GB, 1 TB
Sequential ReadUp to 4,300 MB/s
Sequential WriteUp to 4,000 MB/s
NAND TypeSK hynix 238-layer 3D TLC
FeatureZoned storage (ZUFS)
Operating Temp-25°C to 85°C
ApplicationsMobileAI & HPC
03 — Related Products

Considered alongside

Samsung · UFSMass Production

Samsung UFS 4.0

UFS 4.0 managed NAND with up to 4,200 MB/s reads and double the power efficiency of UFS 3.1, in capacities to 1 TB.

Flagship256 GB512 GB1 TB
View detailsEnquire
Samsung · UFSMass Production

Samsung UFS 3.1

UFS 3.1 managed NAND at up to 2,100 MB/s reads, the volume storage tier for mid-range phones and automotive IVI.

Automotive128 GB256 GB512 GB
View detailsEnquire