UltraQLC™ from SanDisk
Unmatched density, exceptional performance, and superior power efficiency.
UltraQLC enables the next wave of modern applications and AI-driven workloads.
Introducing the UltraQLC Platform
Three core SanDisk innovations in NAND flash drive the power behind UltraQLC:
BiCS8 NAND
- Optimized capacity
- Faster transfer rates
- Accelerated data processing
- Low TCO for high-density storage
Optimized Controllers
- Specialized accelerators for peak performance
- Scalable to 64 die per channel
- Power scaling per demand workload
- Integrated advanced toggle bus mux control
QuadBoost™
- Proprietary flash innovations
- Enables high-performance QLC
- Leading NAND nodes and controllers
White Paper
UltraQLC In the Enterprise
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Boost Capacity, Performance, and Power
Efficiency with SanDisk UltraQLC SSDs
SanDisk's versatile storage technology portfolio is purpose-built to support every phase of the AI Data Cycle, from expansive
AI data lakes to edge inference, empowering our partners to build cutting-edge AI infrastructures that drive innovation and performance.
UltraQLC for Enterprise SSD
SanDisk DC SN570
NVMe™ SSD
QuadBoost and BiCS8 Performance with
PCIe Gen5 | 64TB & 128TB | Shipping 2025
219% faster sequential read speed
5% faster sequential write speed
147% faster random read speed
107% faster random write speed
50% improvement in power efficiency
UltraQLC for Client SSD
SanDisk PC SN5100S
NVMe™ SSD
QuadBoost and BiCS8 Performance with
DRAM-less PCIe Gen4 | 512GB, 1TB & 2TB | Shipping 2025
18% faster sequential read speed
18% faster sequential write speed
53% faster random read speed
44% faster random write speed
35% improvement in power efficiency
Fueling the Future of Data
Storage with UltraQLC
Learn more about how SanDisk’s UltraQLC platform and SSDs are the perfect match for the surging scale and
performance requirements of modern AI data storage — from AI data lakes to edge computing.
Why Develop UltraQLC?
The demand for performance, capacity, and efficiency is surging across data centers, high-performance computing, and consumer storage.
UltraQLC leverages the latest advancements in NAND flash technology to push the limits of density and deliver unprecedented capacity across your systems with uncompromising performance.
What is QuadBoost?
QLC — or, quad-level cell — technology uses four flash memory cells per die to increase density and boost capacity without increasing physical dimensions.
SanDisk developed QuadBoost to optimize QLC SSDs and leverage leading NAND nodes and controllers, improving performance, power, reliability, and capacity simultaneously.
How Does QuadBoost Optimize QLC?
- Unique flash direct-write with 25% to 40% faster write capabilities
- Intelligent power management
- Advanced package density capabilities
- Charge-level sensing and advanced error correction algorithms
- Innovative page programming and readout mechanisms
What is QLC?
Memory cells form the building blocks of flash NAND storage. In their early history, memory cells stored a single bit — either 1 or 0. These were called Single Level Cells (SLC).
As flash storage became more sophisticated, Multi-Level Cells (MLC) could store two bits and Triple-Level Cells (TLC) could store three.
Quad-Level Cells, or QLC, can store four bits per memory cell. That’s 33% more than TLC.
Read More About SanDisk Innovation
Disclosures
1. Comparison based on Western Digital DC SN570 vs. DC SN655 61.44TB at 4,300mb/s performance. One terabyte is equal to one trillion bytes. Actual user capacity may be less due to operating environment. Source: Western Digital Testing.
2. Comparison based on Western Digital PC SN5100S vs. PC SN5000S 2TB. Source: Western Digital Testing.