This article covers SAMSUNG 870 QVO SATA III 2.5 SSD 4TB (MZ-77Q4T0B).

Overview

The Samsung 870 QVO is a second-generation QLC NAND SATA SSD designed for users who need large-capacity storage at a reasonable cost. The 4TB model (MZ-77Q4T0B) delivers sequential read speeds up to 560 MB/s and sequential write speeds up to 530 MB/s, pushing the limits of the SATA III interface. With Samsung’s proprietary controller and Intelligent TurboWrite technology, this drive manages the typical QLC write slowdowns effectively. Positioned as an entry-to-mid-range storage solution, the 870 QVO excels in scenarios where capacity matters more than raw speed. It’s ideal for game libraries, media archives, file servers, or as a secondary storage drive in a desktop or laptop. The 4TB variant offers an excellent cost-per-gigabyte ratio, making it a sensible choice for budget-conscious users who still want reliable Samsung quality.

Compatibility Guide

The 870 QVO uses the standard 2.5-inch SATA form factor (7mm thickness). It is compatible with any system that has a SATA III (6Gbps) port, and it also works with SATA II (3Gbps) ports at reduced speeds. Most desktop PCs can mount it in a 2.5-inch bay or use a 3.5-inch adapter bracket. Notebooks with a 2.5-inch drive bay can also accommodate it, but check for thickness clearance (7mm) if your laptop uses an ultra-slim drive. Before purchasing, ensure you have an available SATA data cable and a SATA power connector from your PSU. For laptops, verify that the drive bay supports 7mm drives and that the system BIOS can handle a 4TB capacity (most modern systems do). If you’re replacing a primary drive, you may need cloning software.

Product Info

Released in the second half of 2020, the Samsung 870 QVO 4TB was one of the largest capacity consumer SATA SSDs at the time. Its pricing has become increasingly competitive, offering one of the lowest costs per gigabyte among reputable brands. The drive comes with a 3-year limited warranty and supports Samsung Magician software for firmware updates, health monitoring, and performance optimization. Market positioning: entry-to-mid-range. This SSD is not aimed at enthusiasts who need NVMe speeds, but rather at mainstream users who want affordable, reliable, large-capacity storage. Key competitors include the Crucial BX500 and WD Green SSD, but Samsung’s in-house controller and proven track record for reliability give the 870 QVO an edge.

Best Use Cases

  1. Gamers expanding their library: Modern PC games often exceed 100 GB. A 4TB SSD lets you keep dozens of titles installed without juggling uninstalls. Load times are slower than NVMe but still far better than HDDs, and the generous capacity justifies the trade-off. 2) Content creators needing archive storage: If you work with large video files or RAW photo collections, the 870 QVO serves as an excellent cold storage drive. Pair it with an NVMe SSD for active projects, and use the 870 QVO for completed projects and backups. 3) Home server or NAS drives: For read-heavy workloads like file sharing or media streaming, this QLC SSD offers low power consumption, silent operation, and reliable performance. However, avoid using it in write-intensive database servers due to limited write endurance.

Things to Consider

The 870 QVO uses QLC NAND, which means sustained write speeds drop significantly after the SLC cache is exhausted (down to around 100 MB/s). If you frequently write large files (e.g., 4K video editing or massive data migrations), consider a TLC-based alternative like the Samsung 870 EVO. Endurance is rated at 1440 TBW for the 4TB model. For typical home use (e.g., 20 GB per day), that translates to over 20 years of daily writes. Nonetheless, if you plan to use it as a scratch disk for heavy write operations, the lower TBW compared to TLC drives could be a concern. NVMe SSDs are 5x faster sequentially and offer much lower latency. For an OS boot drive, an NVMe SSD is strongly recommended. The 870 QVO shines as a secondary data drive, not as a primary system drive if speed is your priority. ## FAQ
Q: Can I use this SSD as a boot drive? A: Yes. It works as a boot drive via SATA, but it won’t match NVMe speeds for booting and launching applications. For best performance, install your OS on an NVMe SSD and use the 870 QVO for games and media storage. Q: Is it compatible with PlayStation 4 or PS5? A: The PS4 can accept a 2.5-inch SATA SSD up to 4TB. For PS5, the internal expansion slot requires M.2 NVMe; this drive can only be used as an external USB storage drive (not for playing PS5 games). Q: How does it compare to the Samsung 870 EVO? A: The 870 EVO uses TLC NAND, offering higher write endurance and better sustained write speeds. The 870 QVO is cheaper per gigabyte and suitable for read-focused tasks. Choose the EVO if you write large amounts of data frequently; choose the QVO if you prioritize capacity and cost over write performance.

Product Disclosure (Amazon)

  • Manufacturer: サムスン(SAMSUNG)
  • Seller: アマゾンYMGM
  • Fulfilled by: アマゾンYMGM
  • ASIN: B089C5P5SX
  • Note: This article covers a manufacturer-made product based on Amazon listing details.