# Team Group T-Force Cardea Zero Z440 256GB PCIe 4.0 Review (2026)

The Team Group T-Force Cardea Zero Z440 256GB is a compact PCIe 4.0 NVMe SSD using Phison's E16 controller with a thin graphene copper foil heat spreader designed to fit under motherboard M.2 coolers.

Quick answer: The Cardea Zero Z440 256GB is a niche product best suited as a fast boot drive for a PCIe 4.0-capable desktop. The thin graphene cooling and slim profile are genuine advantages for builds where motherboard M.2 heatsinks are already in place. The 256GB capacity is too small for more than an OS and a handful of applications or games. For a primary drive, stepping up to the 512GB or 1TB model provides meaningful capacity gains with the same rated speeds. For a dedicated boot drive, the ADATA XPG SX8200 Pro 256GB or WD Blue SN570 250GB offer similar PCIe 3.0 performance at a lower price.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 256 GB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5016-E16 |
| Memory type | Toshiba 3D TLC |
| DRAM cache | DDR4, SLC Cache |
| Sequential read | 5000 MB/s |
| Sequential write | 4400 MB/s |
| Random read IOPS | 750000 |
| Random write IOPS | 750000 |
| Endurance | 1800 TBW |
| MTBF | 1.7 |
| Warranty | 5 years |

## Performance

Team Group rates the Z440 256GB at 5,000 MB/s sequential read and 4,400 MB/s sequential write with 750K random IOPS. These are manufacturer-rated figures for the platform; independent reviews primarily tested the 1TB model and confirmed the E16 hits its 5 GB/s read ceiling. At 256GB, fewer NAND dies may reduce real-world sustained write speeds below the rated 4,400 MB/s, particularly once the SLC cache fills.

The SLC cache at 256GB is necessarily small, likely around 80 GB. Once exhausted, sustained writes transition to TLC direct mode at reduced speeds. For an OS boot drive with mostly read traffic, this is largely irrelevant. Gaming and desktop responsiveness at this capacity are limited more by the 256GB space than by the drive's speed capability. At low queue depths relevant to desktop use, random performance is competitive with other PCIe 3.0 and Gen4 drives.

## Endurance, TBW & Warranty

The 256GB model carries a 1,800 TBW endurance rating with a 5-year warranty. While this seems high for a 256GB drive, it aligns with the endurance levels seen on E16 drives using Kioxia 96L TLC. At 20 GB of writes per day — typical for a boot drive — the endurance would last roughly 246 years. The MTBF is rated at 1.7 million hours. The warranty is limited by whichever comes first: the 5-year period or the TBW threshold.

## Pros and Cons

**Pros:**

- 5,000 MB/s read on PCIe 4.0
- Thin graphene foil fits under motherboard heatsinks
- 1,800 TBW endurance at 256GB
- Phison E16 with DRAM cache
- 5-year warranty
**Cons:**

- 256GB capacity too small for gaming libraries
- Small SLC cache fills quickly during writes
- Double-sided PCB may not fit all laptop slots
- Overkill PCIe 4.0 for a boot-only drive


## Verdict

The Cardea Zero Z440 256GB is a niche product best suited as a fast boot drive for a PCIe 4.0-capable desktop. The thin graphene cooling and slim profile are genuine advantages for builds where motherboard M.2 heatsinks are already in place. The 256GB capacity is too small for more than an OS and a handful of applications or games. For a primary drive, stepping up to the 512GB or 1TB model provides meaningful capacity gains with the same rated speeds. For a dedicated boot drive, the ADATA XPG SX8200 Pro 256GB or WD Blue SN570 250GB offer similar PCIe 3.0 performance at a lower price.

## Frequently Asked Questions

### Is the Cardea Zero Z440 256GB good for gaming?

As a boot drive or for a small number of games, yes. The 5,000 MB/s read speed loads games quickly, and the E16 platform handles random reads well. However, 256GB fills up fast — two or three modern AAA titles can consume the entire usable capacity. For a dedicated gaming drive, the 1TB model is a much better choice. The 256GB works best as an OS and application drive paired with a separate larger game storage drive.

### What is the TBW endurance of the Cardea Zero Z440 256GB?

The 256GB model is rated for 1,800 TBW (terabytes written) with a 5-year warranty. At 20 GB of writes per day — typical for a boot drive workload — this translates to roughly 246 years before the rated endurance is reached. The high TBW relative to capacity is characteristic of E16 drives using Kioxia 96L TLC.

### Does the Z440 need a heatsink?

The drive ships with a thin graphene copper foil heat spreader that provides basic thermal management. It is thin enough to fit under most motherboard-integrated M.2 heatsinks. For sustained heavy write workloads, additional cooling from the motherboard heatsink is recommended. The graphene foil alone may not prevent throttling during extended multi-hundred-GB writes.

### Is the Cardea Zero Z440 256GB compatible with PS5?

The drive is PCIe 4.0 x4 NVMe, meeting the PS5 interface requirement. However, 256GB is too small for practical PS5 use — most PS5 games require 30 to 100 GB each, leaving room for only a few titles. The 1TB or 2TB model is a better choice for PS5 upgrades. The thin graphene foil should fit under the PS5's M.2 slot cover.

### How does the Z440 compare to the Ceramic C440?

Both use the same Phison E16 controller and Kioxia 96L TLC with identical rated performance. The difference is cooling: the C440 has a thicker white ceramic heat spreader that runs slightly cooler but adds height, while the Z440 uses a thin graphene foil that fits under motherboard heatsinks. The Z440 is the better choice for builds with existing M.2 cooling; the C440 suits standalone installations and white-themed builds.

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Last updated: 2026-06-05. Source: https://ssdrive.net/team-group-cardea-zero-z440-256-gb