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| Brand | Samsung |
|---|---|
| Model | 990 PRO |
| Capacity | 4 TB |
| Usage Class | Client / Consumer |
| Host Interface | PCIe Gen4 x4 |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | M.2 (2280) |
|---|
| NAND Flash | Samsung V-NAND 3-bit MLC |
|---|---|
| Drive Writes Per Day | 0.3 |
| Total Bytes Written | 2400 TBW |
| Sequential Read | 7450 MB/s |
|---|---|
| Sequential Write | 6900 MB/s |
| Random Read IOPS | 1600000 |
| Random Write IOPS | 1550000 |
| Average Latency | 55 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-V8P2T0 |
|---|
The Samsung 990 PRO 4TB (MZ-V9P4T0) delivers a standout combination of near–PCIe 4.0 ceiling throughput at 7,450/6,900 MB/s and class-leading 1.6M/1.55M IOPS, making it a strong fit for high-intensity gaming, content creation, and workstation scratch-disk workloads that benefit from both sustained bandwidth and low-latency random access. Compared with the previous-generation MZ-V8P2T0, it offers up to 55% higher random performance and markedly better power efficiency, while scaling endurance to 2,400 TBW at 4TB capacity for longer service life under heavy write activity.
With an endurance rating of 2400 TBW, this 4 TB SSD can sustain about 657 GB of writes per day for 10 years, which is far above the write volume of a typical OS, office, and general business workload. In practical terms, for use as a system drive or in read-heavy workstation and commercial PC deployments, it offers long service life with ample endurance headroom. Its UBER of 1.0E-15 means the expected uncorrectable bit error rate is no more than one bit per 10^15 bits read, which is in line with reliable modern SSD operation and supports dependable day-to-day data access. This model does not include power-loss protection (PLP), so while it is well suited to client and standard business environments, applications with frequent sudden power interruptions or write-critical transactional data are best paired with stable power or UPS protection.
1. The PCIe Gen4 x4 interface provides the bandwidth headroom needed to keep modern CPU lanes fully utilized, making it well suited for dense virtualization hosts and high-throughput storage nodes.
2. With sequential read performance of 7450 MB/s, the drive can accelerate large-file streaming, backup restores, and analytics dataset loading to reduce infrastructure wait states.
3. Delivering 1,600,000 K IOPS in random reads, it is built to sustain massive concurrent access from databases, VDI boot storms, and latency-sensitive online transaction workloads.
4. Rated at 0.3 DWPD, this SSD is best aligned with read-intensive enterprise deployments where predictable service life matters more than heavy daily overwrite capacity.
5. Samsung V-NAND 3-bit MLC combined with a typical latency of 55 µs enables fast, power-efficient response for scale-out application tiers that depend on consistent read performance under load.
Lower-capacity reference: 2 TB (MZ-V9P2T0) Higher-capacity reference: None in the same MZ-V9P series; 4 TB is the largest standard capacity SKU Capacity positioning analysis: The 4 TB MZ-V9P4T0 sits at the sweet spot of the MZ-V9P family. Compared with the 2 TB model, it gives meaningfully more headroom for data growth, overprovisioning, and mixed-workload consolidation without changing the platform or performance profile. At the same time, because there is no larger in-series SKU, 4 TB effectively represents the top usable density while still keeping cost efficiency stronger than moving to a higher-capacity SSD class. It is best suited for mid-sized virtualization clusters, such as hosting boot and application volumes for roughly 40 to 60 business workloads.
Q: Is MZ-V9P4T0 suitable for a write-heavy database server?
A: MZ-V9P4T0 is not ideal for a write-heavy database server. Its 0.3 DWPD and lack of PLP make it better suited for high-performance client, read-intensive, or mixed-use workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 0.3 DWPD, meaning about 1.2 TB of writes per day on a 4 TB drive over the warranty period, consistent with its 2400 TBW endurance rating.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, it does not include power loss protection. PLP is critical in server environments because it helps prevent in-flight data loss and metadata corruption during unexpected power interruptions.
Q: What RAID level is recommended for this SSD?
A: For this SSD, RAID 1 or RAID 10 is generally recommended for better redundancy and performance. For read-focused capacity needs, RAID 5 may be considered, but PLP limitations remain.