Silicon Power US75 1000GB

The Silicon Power US75 1000GB uses the Maxio MAP1602 controller, a four-channel, DRAM-less design on a 12nm process, paired with YMTC 232-layer 3D TLC NAND (Xtacking 3.0). The drive uses Host Memory Buffer (HMB) technology instead of onboard DRAM to manage mapping tables. Field analysis highlights the US75's thermal efficiency — the MAP1602 runs cooler than some older flagship controllers, resulting in minimal thermal throttling under sustained loads, which makes the drive well suited for laptops and compact builds. The initial release is defined by the YMTC 232-layer NAND’s ability to deliver high sequential throughput in a single-sided M.2 2280 form factor.

Key Specifications

• Interface: PCIe 4.0 x4 (NVMe 2.0 support)
• Sequential Read/Write: 7,000 MB/s / 6,000 MB/s
• Controller: Maxio MAP1602
• NAND Flash: YMTC 232-Layer 3D TLC
• DRAM Cache: None (HMB Architecture)
• Physical Layout: M.2 2280, Single-sided PCB

Hardware Alternatives

• Lexar NM790 1000GB & TEAMGROUP MP44Q 1000GB: These drives serve as the most direct hardware relatives, sharing the identical Maxio MAP1602 controller and YMTC 232-layer NAND combination. Variations are largely limited to firmware tuning and branding.
• Western Digital WD_BLACK SN770 1000GB: A direct competitor in the DRAM-less segment that uses a proprietary Western Digital controller and BiCS NAND, targeting the same operational tier.
• Samsung 980 PRO 1000GB: Uses a DRAM-based architecture with a proprietary Elpis controller; the US75 achieves parity in sequential read speeds, positioning it as a modern-architecture alternative to older enthusiast-class drives.