Samsung 990 EVO Plus 1TB hybrid-interface SSD
The Samsung 990 EVO Plus 1TB is a DRAM-less PCIe 5.0 x2 SSD that runs at 7,200 MB/s sequential reads using Samsung's Piccolo 8-channel controller and eighth-generation 236-layer V-NAND TLC.
The 990 EVO Plus occupies the mid-range slot in Samsung's consumer NVMe lineup, sitting between the budget 990 EVO and the enthusiast 990 Pro. It uses a hybrid interface that operates as PCIe 5.0 x2 on Gen5 motherboards or PCIe 4.0 x4 on Gen4 systems, delivering the same 7,200 MB/s sequential reads in either configuration. The drive is DRAM-less and uses Host Memory Buffer (HMB) to borrow a small portion of system RAM for the flash translation layer.
Inside is Samsung's Piccolo 8-channel controller paired with eighth-generation 236-layer V8 TLC NAND, a newer flash generation than the 133-layer NAND used in the original 990 EVO. The 236-layer flash provides better density and efficiency, which translates to the EVO Plus running cooler and drawing less power than the 990 Pro. The 1 TB model is rated at 7,200 MB/s read, 6,300 MB/s write, and carries a 600 TBW endurance rating with a five-year warranty.
The 990 EVO Plus competes with other DRAM-less PCIe 4.0 drives like the WD Blue SN580, the Kingston NV3, and the Lexar NM790. It also undercuts the Samsung 990 Pro on price while offering similar everyday performance, making it a practical choice for gaming PCs and general-purpose builds that do not need a dedicated DRAM cache. The drive ships in the standard M.2 2280 form factor and draws roughly 5.5 W under active workloads.
✅ Storage Comparisons:
🚀 Performance and benchmarks
Samsung rates the 990 EVO Plus 1TB at 7,200 MB/s sequential read and 6,300 MB/s sequential write. These speeds are achievable on both PCIe 5.0 x2 and PCIe 4.0 x4 connections since two Gen5 lanes provide roughly the same bandwidth as four Gen4 lanes. Random performance reaches 1,000,000 read IOPS and 1,400,000 write IOPS.
The 1 TB model has fewer NAND die than the 2 TB and 4 TB variants, but the rated speeds are identical across all capacities in the 990 EVO Plus lineup. The drive uses Samsung's TurboWrite SLC caching to accelerate burst writes. Once the SLC cache is full, writes drop to native TLC speeds, which are still respectable at this price tier.
Because the 990 EVO Plus is DRAM-less, it relies on HMB to borrow 32 to 64 MB of system memory for address mapping. This adds a small latency penalty compared to drives with dedicated DRAM, but in practice the impact on gaming and general workloads is minimal. The drive draws approximately 5.5 W under load, making it one of the cooler-running NVMe options available.
🖥️ Endurance and warranty
Samsung covers the 990 EVO Plus 1TB with a five-year limited warranty and a 600 TBW endurance rating. At 600 terabytes written, the drive can absorb roughly 330 GB of writes per day over the five-year period. For a typical user writing 20 to 30 GB per day, the drive would use less than five percent of its endurance over the warranty window, meaning the drive will almost certainly outlast the warranty period by a significant margin. Samsung Magician software provides real-time monitoring of TBW consumption, drive temperature, and firmware updates. This level of endurance is generous for a mid-range drive at this capacity point.
📊 Specs
| Category | Value |
|---|---|
| Capacity [?] | 1 TB |
| Interface [?] | M.2 5.0 x 2 / 4.0 x 4 |
| Controller [?] | Samsung Piccolo 8 Channel |
| Memory type [?] | Samsung 236-L V8 TLC |
| DRAM [?] | HMB |
| Read speed (MB/s) [?] | 7200 |
| Write speed (MB/s) [?] | 6300 |
| Read IOPS [?] | 1000000 |
| Write IOPS [?] | 1400000 |
| Endurance (TBW) [?] | 600 |
| MTBF (million hours) [?] | 1500000 |
| Warranty (years) [?] | 5 |
Conclusion
The Samsung 990 EVO Plus 1TB is a well-rounded mid-range SSD that balances speed, efficiency, and price. Its 7,200 MB/s reads and DRAM-less design make it competitive with drives like the WD Blue SN580 and Lexar NM790 at this capacity. The five-year warranty and Samsung's brand reliability add value for users who prioritize long-term support. Users who need a DRAM cache for sustained write-heavy workloads should consider the Samsung 990 Pro instead. For gaming, general productivity, and everyday use, the 990 EVO Plus 1TB delivers more than enough performance at a reasonable cost.
+ Pros
- 7,200 MB/s sequential read speed
- Works on PCIe 5.0 x2 and PCIe 4.0 x4
- 236-layer V8 TLC NAND for efficiency
- Low 5.5W active power consumption
- Five-year warranty with 600 TBW
- Samsung Magician software support
- Cons
- DRAM-less, uses HMB from system RAM
- Slower sustained writes after SLC cache fills
- Only x2 lanes on PCIe 5.0
- 1TB capacity limits endurance to 600 TBW
- Not the fastest choice for heavy write workloads
🛒 Buy this or similar SSD Storage:
✨ Video Review
Samsung 990 EVO PLUS SSD Review - A Gen 4.5 SSD?
