A radical shift in storage architecture is coming to Samsung’s SSD lineup, with the BM9K1 marking the first consumer drive to pair PCIe 5.0 speed with a proprietary RISC-V controller. The move away from Arm-based designs could reshape power efficiency and performance—though for gamers, the QLC NAND tradeoff remains unresolved.
The BM9K1, unveiled at the China Flash Market Summit earlier this year, is Samsung’s latest attempt to balance speed, capacity, and power in a single package. By doubling sequential read speeds to 11.4 GB/s over its PCIe 4.0 predecessor, the drive sets a new benchmark for QLC NAND—though write performance and endurance figures are still under wraps.
Key specs
- Interface: PCIe 5.0 (x4)
- NAND type: QLC (3D V-NAND, layer count unspecified)
- Controller: Custom RISC-V (replaces Arm-based Presto in this series)
- Capacities: 512 GB, 1 TB, 2 TB
- Sequential read: 11.4 GB/s (max)
- Power efficiency: 23% improvement over PCIe 4.0 QLC designs
- Process node: 5 nm (controller)
The RISC-V controller isn’t just a speed bump—it’s a full architectural overhaul. Samsung claims the open-source instruction set allows for deeper customization, trimming power draw by nearly a quarter while maintaining peak throughput. That matters most in thin-and-light laptops and small-form-factor PCs, where every watt saved extends battery life—but gamers will still need to weigh QLC’s lower endurance against raw speed.
What’s still unknown
Write speeds, endurance ratings, and pricing remain unconfirmed, with Samsung targeting a 2027 launch. Whether the RISC-V advantage extends to TLC NAND (as seen in Samsung’s 9100 Pro) is also unclear—though the company has hinted at future TLC-RISC-V hybrids. For now, the BM9K1 stands as proof that PCIe 5.0 can deliver on its promise—but only if QLC’s reliability holds under real-world loads.
