Silicon Power XS75 1000GB

The Silicon Power XS75 uses the Maxio MAP1602 controller paired with YMTC 232-Layer 3D TLC NAND. It is a DRAM-less design that relies on Host Memory Buffer (HMB) instead of an onboard DRAM cache. Despite a 4-channel controller, the high NAND interface speed (typically 2400 MT/s) allows the drive to fully saturate PCIe 4.0 bandwidth. The MAP1602 shows strong power efficiency and minimal thermal throttling in testing, the drive is single-sided M.2 2280 for compatibility with slim notebooks and the PlayStation 5, and Silicon Power is a fab-less manufacturer so component sourcing can vary over the product's lifespan.

Key Specifications

• Interface: PCIe 4.0 x4 / NVMe 1.4
• Controller: Maxio MAP1602 (Arm Cortex-R5 architecture, 12nm process)
• Controller channels: 4
• NAND Flash: YMTC 232-Layer 3D TLC (Xtacking 3.0)
• DRAM Cache: None (HMB supported)
• Sequential Read: 7,000 MB/s
• Sequential Write: 6,000 MB/s
• Form Factor: Single-sided M.2 2280
• Typical NAND interface speed: 2400 MT/s

Hardware Alternatives

• Lexar NM790: Shares the identical controller and NAND configuration; performance profiles are nearly indistinguishable in synthetic benchmarks.
• Addlink A93: Another direct hardware clone utilizing the Maxio/YMTC combination.
• Netac NV7000-t: Often features the same underlying hardware bill of materials.
• WD Black SN770: A competing DRAM-less design using proprietary Western Digital architecture; the XS75 generally reports higher peak sequential throughput due to the denser NAND interface.
• Samsung 990 EVO: Targets a similar demographic (DRAM-less, power-efficient); the XS75 pushes Gen4 speeds closer to higher-end Gen4 models.