Tom's Hardware Verdict The Biwin M350 is a budget PCIe 4.0 SSD done right. Good performance where it matters, good power efficiency too. Weak sustained performance from its QLC flash, though. Pros + Good all-around performance + High power efficiency Cons - Weaker performance specs - Poor sustained write performance Why you can trust Tom's Hardware Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test . A Kingston NV3-killer from Biwin? This once lesser-known brand continues to surprise, delivering a drive that punches above its weight. The M350’s competitive hardware makes for a compelling QLC-based budget SSD without making heavy compromises. The market may again be flooded by entry-level PCIe 4.0 drives, and the M350 stands out by balancing high power efficiency with good random read performance.…