This article covers Samsung 990 EVO Plus SSD 1TB.

Overview

The Samsung 990 EVO Plus is a mid-to-high-end NVMe SSD that supports both PCIe 4.0 x4 and the newer PCIe 5.0 x2 interface. The 1TB model (MZ-V9S1T0B/AM) delivers sequential read speeds up to 7,150 MB/s and write speeds up to 6,300 MB/s, making it a strong choice for gamers and creators alike. A standout feature is its dual-interface compatibility: it runs at full bandwidth in PCIe 4.0 x4 slots and adapts to PCIe 5.0 x2 slots. This flexibility ensures optimal performance on current and next-generation motherboards. The drive uses Samsung’s Host Memory Buffer (HMB) technology to remove the need for a dedicated DRAM cache, reducing cost and power consumption while maintaining excellent real-world performance.

Compatibility Guide

The 990 EVO Plus uses the standard M.2 2280 form factor and connects over the NVMe protocol. It works in any M.2 slot that supports PCIe NVMe, whether on a desktop or laptop. For full speed, a PCIe 4.0 x4 slot is recommended, though PCIe 5.0 x2 slots are also fully compatible. Using it in a PCIe 3.0 x4 slot will cap performance below its rated speeds.

Product Info

Released in late 2024, the 1TB model retails around ¥48,000 as of this writing. Samsung backs it with a 5-year warranty (subject to TBW limits). Market positioning is mid-high tier: it trades a discrete DRAM buffer for HMB, offering a balanced mix of speed, efficiency, and affordability. The drive uses TLC NAND and Samsung’s in-house controller.

Best Use Cases

Gaming PC storage: Fast load times for AAA titles and DirectStorage-optimized games. The generous TurboWrite buffer handles large writes like game updates smoothly. Creative workstations: Excellent sequential write performance accelerates 4K video exports, large photo batches, and 3D asset saving. * Laptop upgrades: Low power draw and HMB technology make it ideal for notebooks where battery life and heat are concerns. ## Alternatives
Direct competitors include the WD Black SN850X and Crucial T500. The SN850X includes a DRAM cache and offers slightly better random IO for gaming, while the T500 also has DRAM and strong sustained write performance. The 990 EVO Plus differentiates itself with PCIe 5.0 x2 support, giving it an edge for future platform upgrades, and generally runs cooler than many DRAM-equipped rivals.

Things to Consider

Because the 990 EVO Plus lacks a discrete DRAM cache, sustained large-file writes can eventually slow down after the TurboWrite buffer is exhausted. This makes it less ideal for heavy server-like workloads. Also, while PCIe 5.0 x2 provides the same theoretical bandwidth as PCIe 4.0 x4, real-world performance depends on the motherboard’s chipset lane layout. The 1TB model’s rated endurance is 600 TBW, which is adequate for most consumer use but may be limiting for daily terabyte-level writing.

Product Disclosure (Amazon)

  • Manufacturer: サムスン(SAMSUNG)
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0DHLFWBQ1
  • Note: This article covers a manufacturer-made product based on Amazon listing details.