# Addlink G55H 1TB Review: PCIe 5.0 NVMe SSD With Heatsink (2026)

The Addlink G55H 1 TB pairs a PCIe 5.0 NVMe controller with a pre-installed 8.75mm heatsink, hitting 10,300 MB/s reads in a PS5-ready package.

Quick answer: The Addlink G55H 1 TB is a solid pick for anyone building or upgrading a Gen5 desktop who also wants PS5 compatibility without buying a separate heatsink. Its DRAM-less architecture keeps the price competitive, and the included 8.75mm aluminum heatsink removes the guesswork around thermal management. Skip it if the workstation runs PCIe 4.0 only and has no upgrade path, since a WD Black SN850X or Samsung 990 Pro delivers identical practical speed at a lower cost. The main alternative in the Gen5 space is the Crucial T705, which trades blows on benchmarks but ships without a heatsink on most SKUs. Overall, the G55H 1 TB covers the bases that matter for mainstream Gen5 adoption: fast sequential throughput, PS5-ready out of the box, and a 5-year warranty.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 5.0 |
| Controller | Phison E31T 4 Channel |
| Memory type | Kioxia 218-L TLC |
| DRAM cache | HMB |
| Sequential read | 10300 MB/s |
| Sequential write | 9000 MB/s |
| Random read IOPS | 1000000 |
| Random write IOPS | 1000000 |
| Endurance | 600 TBW |
| MTBF | 1500000 |
| Warranty | 5 years |

## Performance

Addlink rates the G55H 1 TB at up to 10,300 MB/s sequential read and 9,000 MB/s sequential write over the PCIe 5.0 x4 bus. The spec sheet lists up to 1,300K random read and 1,500K random write IOPS, which are strong numbers for a DRAM-less design. In practice, expect those ceiling figures inside the SLC cache window; once the static cache fills during sustained large-file transfers, writes will drop to the native TLC write speed, which is typical for drives in this segment.

On a PCIe 4.0 slot the interface bottleneck reduces real-world throughput to roughly 7,000 MB/s reads, matching what the PS5 can accept. For gaming and general desktop use, the gap between Gen4 and Gen5 is minor: game load times, OS boot, and application launches are largely bound by random 4K performance and latency, where the G55H's HMB architecture holds its own. The real Gen5 advantage shows up in large-file workflows: transferring a 50 GB video project or unpacking a game archive will feel meaningfully faster than on any Gen4 drive. Independent reviewers have called the G55H one of the fastest DRAM-less PCIe 5.0 SSDs tested, noting competitive benchmark scores alongside low power draw.

## Endurance, TBW & Warranty

Addlink backs the G55H with a 5-year limited warranty, ending when the stated TBW endurance or the five-year term is reached, whichever comes first. The 1 TB model carries a 600 TBW endurance rating. At a typical consumer write workload of 20 to 50 GB per day, 600 TBW translates to roughly 33 to 82 years before the endurance counter would theoretically expire, so the warranty period is almost always the binding constraint. The drive reports its remaining endurance percentage through SMART (CrystalDiskInfo reads attribute 05, labeled Percentage Used), so it is straightforward to monitor health over time. The drive is rated for 1.5 million hours MTBF, a population-level reliability statistic rather than a per-unit guarantee, but it reflects the confidence level typical of modern TLC consumer drives. RMA is handled through the retailer or by contacting Addlink support directly.

## Pros and Cons

**Pros:**

- Up to 10,300 MB/s sequential reads
- Pre-installed 8.75mm aluminum heatsink fits PS5
- Low-power 7nm Phison E31T controller
- 5-year limited warranty
- Backward compatible with PCIe 4.0 and 3.0 slots
- Up to 1,500K random write IOPS
**Cons:**

- DRAM-less design relies on HMB support
- No hardware encryption
- Gen5 speed only on Gen5-capable motherboards
- SLC cache is finite; sustained writes drop to TLC speed
- Addlink has smaller RMA footprint than Samsung or WD


## Verdict

The Addlink G55H 1 TB is a solid pick for anyone building or upgrading a Gen5 desktop who also wants PS5 compatibility without buying a separate heatsink. Its DRAM-less architecture keeps the price competitive, and the included 8.75mm aluminum heatsink removes the guesswork around thermal management. Skip it if the workstation runs PCIe 4.0 only and has no upgrade path, since a WD Black SN850X or Samsung 990 Pro delivers identical practical speed at a lower cost. The main alternative in the Gen5 space is the Crucial T705, which trades blows on benchmarks but ships without a heatsink on most SKUs. Overall, the G55H 1 TB covers the bases that matter for mainstream Gen5 adoption: fast sequential throughput, PS5-ready out of the box, and a 5-year warranty.

## Frequently Asked Questions

### Is the Addlink G55H 1 TB compatible with the PS5?

Yes. The G55H ships with an 8.75mm aluminum heatsink that fits within Sony's 11.25mm maximum height limit for the PS5 expansion slot. The drive exceeds Sony's recommended 5,500 MB/s minimum read speed, although it will run at PCIe 4.0 speeds (roughly 7,000 MB/s) since the PS5's slot is Gen4. No extra thermal pads are needed.

### Does the Addlink G55H 1 TB have DRAM?

No. The G55H uses a DRAM-less Phison E31T controller that relies on the Host Memory Buffer (HMB) protocol, borrowing a small portion of system RAM for its flash translation layer. This keeps the drive affordable while still delivering strong random I/O performance, provided the host platform supports HMB, which all modern AMD and Intel platforms do.

### What is the TBW endurance of the Addlink G55H 1 TB?

The 1 TB model is rated at 600 TBW (terabytes written). At a typical consumer write workload of 20 to 50 GB per day, that endurance rating would theoretically last decades, so the 5-year warranty term is the practical limit for most users. Remaining endurance can be monitored via SMART attribute 05 in CrystalDiskInfo.

### Is the Addlink G55H 1 TB good for gaming?

Yes. On a PCIe 5.0 motherboard, game load times, asset streaming, and large-file installs all benefit from the 10,300 MB/s sequential read ceiling. On a PCIe 4.0 motherboard or PS5, the drive caps at roughly 7,000 MB/s, which still outperforms any SATA SSD and matches high-end Gen4 drives. For gaming specifically, random 4K performance matters more than sequential throughput, and the G55H's HMB-based architecture handles that capably.

### Does the Addlink G55H need an additional heatsink?

No. The G55H already includes a premium aluminum heatsink with a crosscut grid design and thermal silica pad, totaling 8.75mm in height. Addlink positions the G55H as thermally self-sufficient for both desktop and PS5 use. Adding a second heatsink on top is unnecessary and could create clearance issues in tight builds.

### How does the Addlink G55H compare to the Crucial T705?

Both are PCIe 5.0 DRAM-less SSDs with similar rated sequential speeds. The G55H ships with a pre-installed heatsink, while the Crucial T705 typically does not, which matters for PS5 installations. Performance benchmarks between the two are close, with reviewers placing them within a narrow margin of each other. The choice often comes down to pricing and whether the included heatsink is a convenience factor.

### Can the Addlink G55H 1 TB work in a laptop?

The bare G55 (without heatsink) is the better fit for most laptops at just 2.3mm thick. The G55H with its 8.75mm heatsink is taller than many laptop M.2 slots can accommodate. If the laptop has a Gen5 M.2 slot with sufficient clearance, the G55H will work at full speed; otherwise, the G55 bare drive offers the same internals in a slimmer package.

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Last updated: 2026-08-17. Source: https://ssdrive.net/addlink-g55h-1-tb