Samsung 870 QVO 8000GB

The Samsung 870 QVO 8TB is a high-density 2.5-inch consumer SATA SSD built around Samsung's MKX controller and the SATA III interface. It uses 8GB of LPDDR4 DRAM (following a roughly 1GB:1TB DRAM-to-NAND ratio) and Samsung V-NAND 4-bit MLC (QLC) as storage media. The drive relies on an Intelligent TurboWrite pseudo-SLC cache to mask QLC latency, making it suited for archival or mass-storage roles where capacity is prioritized over sustained speed. Performance is bimodal: it can saturate the SATA bus during cache-backed bursts but shows reduced throughput during long sequential writes once the SLC cache is exhausted.

Key Specifications

• Capacity: 8000GB
• Form Factor: 2.5-inch
• Interface: SATA III (6 Gbps)
• Max Sequential Read/Write: 560 MB/s / 530 MB/s
• Sustained Write Speed (after SLC cache): ~80–160 MB/s
• Controller: Samsung MKX
• NAND Type: Samsung V-NAND 4-bit MLC (QLC)
• DRAM Cache: 8GB LPDDR4 (1GB:1TB ratio)
• Dynamic SLC Cache: up to 78GB (plus a static 6GB allocation)
• Endurance: 2,880 TBW
• Encryption: AES 256-bit Full Disk Encryption, TCG/Opal V2.0, Encrypted Drive (IEEE1667)

Hardware Alternatives

• Samsung 870 EVO 4000GB: The direct in-house sibling using the same MKX controller but 3-bit MLC (TLC) NAND, offering higher endurance and far less degradation in sustained write performance; the EVO lineup generally tops out at 4TB.
• Crucial MX500 4000GB: A primary market competitor in the high-performance SATA segment that uses Micron TLC NAND and a Silicon Motion controller, providing stronger native sustained write performance but without a consumer 8TB SKU.
• Micron 5300/5400 PRO: Enterprise-grade SATA SSDs that are among the few non-Samsung drives available in high-capacity 2.5-inch form factors, tuned for consistency and mixed-use endurance rather than consumer burst performance.