# Nextorage NN5PRO 1TB PCIe 5.0 NVMe SSD (2026)

The Nextorage NN5PRO 1 TB is a PCIe 5.0 NVMe built on Phison's E26 controller and Micron 232-layer TLC — a combination aimed squarely at enthusiasts who want sequential throughput well above the PCIe 4.0 ceiling.

Quick answer: The Nextorage NN5PRO 1 TB is a straightforward PCIe 5.0 NVMe that delivers the expected E26-platform performance without surprises. Builders running Threadripper or Intel Z890 platforms with PCIe 5.0 M.2 slots will see tangible gains in large-file workflows, but gamers and general desktop users would get equivalent real-world performance from a cheaper PCIe 4.0 drive like the WD Black SN850X or Samsung 990 Pro. Consider this drive if your motherboard has a PCIe 5.0 slot and you regularly move tens of gigabytes at a time; skip it if your workload is primarily gaming or office tasks.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5026-E26 8 Channel |
| Memory type | Micron 232-L, TLC |
| DRAM cache | Yes |
| Sequential read | 12400 MB/s |
| Sequential write | 11800 MB/s |
| Random read IOPS | 1400000 |
| Random write IOPS | 1400000 |
| Endurance | 1.4 TBW |
| MTBF | 2000000 |
| Warranty | 1 years |

## Performance

Nextorage rates the NN5PRO 1 TB at up to 12,400 MB/s sequential reads and 11,800 MB/s sequential writes. These numbers sit near the practical ceiling of the PCIe 5.0 x4 interface, which maxes out around 14,000 MB/s after protocol overhead. The E26 controller relies on an SLC write cache to hit peak burst writes; once that cache fills during large sustained transfers, write speeds drop to the native TLC write rate, which is typically in the 2,000–4,000 MB/s range depending on the workload.

For everyday desktop use — game loading, application launches, general multitasking — the NN5PRO will feel functionally identical to any high-end PCIe 4.0 drive, because most consumer workloads never push enough sequential data to exploit the extra bandwidth. The real advantage appears in large-file workflows: moving 50+ GB video projects, extracting large archives, or running a scratch disk for DaVinci Resolve. In those scenarios, the doubled bus bandwidth cuts transfer times roughly in half compared to PCIe 4.0 drives.

## Endurance, TBW & Warranty

Nextorage covers the NN5PRO with a standard limited warranty, though the listed warranty period of one year is unusually short for a consumer NVMe SSD — most drives in this class carry 5-year terms, so buyers should confirm the actual warranty at the time of purchase. The endurance rating for the 1 TB model is listed at 1.4 PBW (1,400 TBW), which is typical for a Phison E26 drive at this capacity using Micron 232-layer TLC. At a moderate write workload of 30 GB per day, that endurance rating translates to over 120 years of use — far beyond any realistic consumer scenario. Most users will replace the drive long before endurance becomes a factor. As with all SSDs, the warranty is limited by whichever comes first: the warranty period or the TBW rating.

## Pros and Cons

**Pros:**

- 12,400 MB/s rated sequential reads
- Phison E26 8-channel controller with DRAM cache
- Micron 232-layer 3D TLC NAND
- Single-sided M.2 2280 PCB
- PCIe 5.0 x4 interface
**Cons:**

- High power draw compared to PCIe 4.0 drives
- No included heatsink in base model
- Requires PCIe 5.0 M.2 slot for full speed
- 1 TB variant has less sustained write headroom than 2 TB


## Verdict

The Nextorage NN5PRO 1 TB is a straightforward PCIe 5.0 NVMe that delivers the expected E26-platform performance without surprises. Builders running Threadripper or Intel Z890 platforms with PCIe 5.0 M.2 slots will see tangible gains in large-file workflows, but gamers and general desktop users would get equivalent real-world performance from a cheaper PCIe 4.0 drive like the WD Black SN850X or Samsung 990 Pro. Consider this drive if your motherboard has a PCIe 5.0 slot and you regularly move tens of gigabytes at a time; skip it if your workload is primarily gaming or office tasks.

## Frequently Asked Questions

### Is the Nextorage NN5PRO 1 TB good for gaming?

Yes, but with a caveat: gaming load times on the NN5PRO 1 TB are nearly identical to a high-end PCIe 4.0 drive like the Samsung 990 Pro, because most games do not transfer enough sequential data to benefit from PCIe 5.0 bandwidth. The NN5PRO shines in large-file tasks — video editing, archive extraction, and scratch-disk workloads — where the doubled bus speed actually matters. For a gaming-only build, a cheaper PCIe 4.0 drive offers the same in-game experience.

### Is the Nextorage NN5PRO 1 TB compatible with the PS5?

No. The PS5's M.2 slot supports PCIe 4.0 NVMe drives, and while PCIe 5.0 drives are backward compatible with PCIe 4.0 slots, the NN5PRO's E26 controller draws significantly more power than Sony recommends. Additionally, the PS5 cannot use the extra bandwidth — the console's PCIe 4.0 x4 interface caps out around 7,000 MB/s. A PCIe 4.0 drive like the WD Black SN850X is a better fit for PS5 upgrades.

### Does the Nextorage NN5PRO have a DRAM cache?

Yes. The NN5PRO uses an onboard DRAM cache buffer alongside the Phison E26 controller. This is a dedicated DRAM chip (LPDDR4) used for the flash translation layer, which helps maintain consistent random I/O performance and sustained write speeds. Drives without DRAM rely on the host system's memory via HMB, which can add latency under heavy workloads.

### What is the TBW endurance of the Nextorage NN5PRO 1 TB?

The endurance rating is 1,400 TBW (1.4 PBW) for the 1 TB model. This is in line with other Phison E26 drives using Micron 232-layer TLC at the same capacity. At a typical consumer write workload of 20–50 GB per day, the drive would last well over 70 years before hitting the TBW limit. The warranty is the more relevant constraint for most users.

### Does the Nextorage NN5PRO 1 TB need a heatsink?

A heatsink is strongly recommended. The Phison E26 controller runs noticeably hotter than PCIe 4.0 controllers, and sustained writes can push temperatures high enough to trigger thermal throttling. Most PCIe 5.0-ready motherboards include a dedicated M.2 heatsink for the top slot, which is usually sufficient. If your motherboard does not include one, a third-party M.2 heatsink rated for PCIe 5.0 drives is a worthwhile addition.

### Is the 1 TB NN5PRO slower than the 2 TB model?

Yes, the 1 TB model typically has slightly lower sustained write speeds than the 2 TB model after the SLC cache fills. This is a common pattern with TLC-based SSDs — more NAND die on the 2 TB model means more parallel write channels, which keeps native TLC write speeds higher. For most users, the difference is only noticeable during large sustained writes exceeding the SLC cache size.

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Last updated: 2026-06-07. Source: https://ssdrive.net/nextorage-nn5pro-1-tb