# Team Group Cardea Z44Q 4TB — DRAM-less QLC PCIe 4.0 NVMe (2026)

The Team Group Cardea Z44Q 4TB earns its place as one of the better QLC PCIe 4.0 drives by pairing 800 TBW of endurance with a factory-included dual heatsink at a capacity where most alternatives cost substantially more.

Quick answer: The Team Group Cardea Z44Q 4 TB is the right drive for a specific buyer: someone who needs four terabytes of fast NVMe storage for a game library, media collection, or general desktop use and wants to spend as little as possible without dropping to SATA speeds. The included heatsink removes the usual hidden cost of adding a third-party cooler, and the 5,000 MB/s reads are more than enough for DirectStorage titles and quick level loads. Skip it if your workflow involves regular large-file writes — video editors, 3D artists, and anyone dumping hundreds of gigabytes to disk in a single session will hit the QLC write cliff and find TLC alternatives like the WD Black SN770 or Crucial P3 Plus more productive at similar capacities. For its intended use case, the Z44Q 4 TB gets the fundamentals right, pairing PCIe 4.0 throughput with a sensible endurance envelope at the lowest end of the 4 TB NVMe price spectrum.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 4 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Phison PS5016-E16 |
| Memory type | QLC |
| DRAM cache | 2GB DDR4 |
| Sequential read | 5000 MB/s |
| Sequential write | 4000 MB/s |
| Random read IOPS | 350000 |
| Random write IOPS | 600000 |
| Endurance | 800 TBW |
| MTBF | 3 |
| Warranty | 5 years |

## Performance

Team Group rates the 4 TB Cardea Z44Q at up to 5,000 MB/s sequential reads and 4,000 MB/s sequential writes — numbers that max out the PCIe 4.0 x4 interface's practical ceiling for a DRAM-less QLC design. Random performance is rated at up to 350,000 IOPS read and 600,000 IOPS write in most third-party databases, though the manufacturer's own product page lists higher figures of 580,000 and 850,000 IOPS respectively. The discrepancy likely reflects different measurement methodologies; the more conservative numbers should be treated as the reliable floor. In practice, these figures translate to game load times within a second or two of premium TLC drives — a gap invisible in blind testing for gaming and operating system responsiveness.

Where the QLC architecture reveals itself is under sustained write loads. The Z44Q uses a large dynamic SLC cache to absorb incoming writes at full speed, but once that cache fills — roughly after 200 to 400 GB of sequential writes in a single session, depending on how full the drive is — write throughput drops to QLC native speeds, which can fall below 200 MB/s. For a boot drive or game library this is irrelevant; games and operating systems write in short bursts that stay within the cache. For users who regularly ingest large video files or run database workloads, however, this write cliff makes the Z44Q a poor fit. Independent reviewers consistently describe the performance profile as fast for consumer bursts and unsuited for sustained workstation throughput.

## Endurance, TBW & Warranty

Team Group backs the Cardea Z44Q 4 TB with a 5-year limited warranty, standard for the T-Force lineup, capped by the 800 TBW endurance rating. At a typical consumer write load of 30 to 50 GB per day, 800 TBW works out to roughly 44 to 73 years of use — well past the drive's practical service life. The endurance ratio of 200 TBW per terabyte is on the lower end for PCIe 4.0 drives but is consistent with QLC NAND, which trades write longevity for bit density and cost. The MTBF is rated at 3 million hours, a population-level statistic common across consumer SSDs that indicates reliability under normal operating conditions rather than a guarantee for any individual unit. Warranty claims are handled through Team Group's standard RMA process; buyers should register the drive and retain proof of purchase, as the 5-year window is tied to the original sale date and is not transferable.

## Pros and Cons

**Pros:**

- 5,000 MB/s sequential reads on PCIe 4.0 x4
- 800 TBW endurance rating for the 4 TB model
- Includes both aluminum heatsink and graphene thermal pad
- Large dynamic SLC write cache keeps consumer writes at full speed
- 5-year limited warranty with industry-standard TBW cap
- 4 TB of QLC NAND in a single M.2 2280 slot
**Cons:**

- QLC write speeds drop sharply after SLC cache exhaustion
- No dedicated DRAM cache, uses HMB from system memory
- Low endurance-per-terabyte compared to TLC alternatives
- Double-sided PCB limits fit in thin laptop M.2 slots
- Rated read speed falls below Sony's 5,500 MB/s PS5 recommendation


## Verdict

The Team Group Cardea Z44Q 4 TB is the right drive for a specific buyer: someone who needs four terabytes of fast NVMe storage for a game library, media collection, or general desktop use and wants to spend as little as possible without dropping to SATA speeds. The included heatsink removes the usual hidden cost of adding a third-party cooler, and the 5,000 MB/s reads are more than enough for DirectStorage titles and quick level loads. Skip it if your workflow involves regular large-file writes — video editors, 3D artists, and anyone dumping hundreds of gigabytes to disk in a single session will hit the QLC write cliff and find TLC alternatives like the WD Black SN770 or Crucial P3 Plus more productive at similar capacities. For its intended use case, the Z44Q 4 TB gets the fundamentals right, pairing PCIe 4.0 throughput with a sensible endurance envelope at the lowest end of the 4 TB NVMe price spectrum.

## Frequently Asked Questions

### Is the Team Group Cardea Z44Q 4TB good for gaming?

Yes, the Cardea Z44Q 4TB is well suited for gaming, particularly as a large game library drive. Its 5,000 MB/s sequential reads deliver load times within a second of premium TLC PCIe 4.0 drives, a difference you will not notice outside of side-by-side stopwatch testing. Games write data in short bursts during installs, patches, and save operations, which stay well within the drive's SLC cache and avoid the QLC write cliff entirely. For a pure gaming workload — Steam library, Game Pass titles, DirectStorage-enabled games — the Z44Q provides an excellent capacity-per-dollar ratio. The one caveat is that the 4 TB model's double-sided PCB may not fit in some single-sided M.2 slots found in thin gaming laptops; verify clearance before purchasing.

### Is the Cardea Z44Q 4TB compatible with the PS5?

The Cardea Z44Q 4TB meets most of Sony's published PS5 expansion requirements — it is a PCIe 4.0 x4 NVMe drive in the M.2 2280 form factor, and its physical dimensions with the included heatsink fit within the 110 × 25 × 11.25 mm maximum. The 5,000 MB/s rated sequential read speed is below Sony's 5,500 MB/s recommendation, so the drive does not appear on Sony's official compatibility list. In practice, testers have found that game load times on PCIe 4.0 drives are not affected by a 500 MB/s shortfall, but buyers who want guaranteed day-one compatibility should choose a drive that meets the full 5,500 MB/s target. Install with the graphene thermal pad if the aluminum heatsink is too tall for the PS5 expansion bay cover to close.

### Does the Cardea Z44Q have a DRAM cache?

No, the Team Group Cardea Z44Q is a DRAM-less design. Instead of a dedicated DRAM chip on the SSD, it uses the Host Memory Buffer (HMB) feature of the NVMe 1.4 protocol to borrow a small portion of the system's main RAM for its mapping table. HMB is sufficient for consumer workloads like gaming and general desktop use, but it adds microseconds of latency compared to a dedicated DRAM cache and can show slightly weaker random I/O performance under heavy multitasking. The drive also maintains a dynamic SLC write cache carved from its QLC NAND to absorb burst writes, which is unrelated to DRAM caching but is sometimes conflated with it in product descriptions and third-party spec databases.

### What is the TBW endurance of the 4TB Cardea Z44Q?

The 4 TB variant of the Cardea Z44Q is rated for 800 TBW (Terabytes Written), meaning you can write 800 terabytes of data to the drive over its lifetime before the NAND exceeds its rated endurance. This works out to roughly 200 TBW per terabyte, consistent with QLC NAND's trade-off between bit density and write longevity. At a typical daily write load of 30 GB — common for gaming and general desktop use — the drive would last approximately 73 years before hitting the TBW ceiling. Heavier workloads like daily 100 GB video file transfers still yield over 20 years of endurance, so the TBW rating is unlikely to be a practical limitation for the drive's intended consumer audience.

### Does the Cardea Z44Q need a heatsink?

Team Group includes both an aluminum heat spreader and a graphene thermal pad with the Cardea Z44Q, so a separate purchase is not required. The QLC NAND and DRAM-less controller run cooler than high-end TLC drives with dedicated DRAM, but PCIe 4.0 operation still generates enough heat to trigger thermal throttling under sustained load without any cooling. For desktop use, attach the aluminum heatsink before installation. For the PS5 expansion slot, the graphene pad provides a lower-profile option if the aluminum heatsink is too tall to close the bay cover. The drive does not ship with a pre-installed heatsink, so the user must apply the included thermal solution during installation.

### How does the Cardea Z44Q compare to the WD Black SN770?

The WD Black SN770 is a TLC PCIe 4.0 drive, also DRAM-less, rated at up to 5,150 MB/s reads and 4,850 MB/s writes in its 2 TB configuration — faster on writes than the Z44Q's 4,000 MB/s, and with significantly better sustained write performance thanks to the TLC NAND. The trade-off is capacity and cost: the SN770 tops out at 2 TB, while the Z44Q goes to 4 TB, and the Z44Q typically costs less per gigabyte. For a boot drive or mixed-use system drive, the SN770 is the stronger pick. For a secondary game library or media storage drive where capacity matters more than sustained write speed, the Z44Q 4 TB makes a stronger case.

### Is the 4TB version slower than the 2TB or 1TB Cardea Z44Q?

No, the opposite. The 4 TB Cardea Z44Q is the fastest variant in the lineup on writes — rated at 4,000 MB/s, compared to 3,700 MB/s for the 2 TB model and 3,500 MB/s for the 1 TB model. All three capacities share the same 5,000 MB/s sequential read speed. This pattern is common in QLC drives: higher capacities benefit from increased NAND parallelism, so larger models often carry higher write ratings and larger SLC cache allocations. The 4 TB model also gets the highest TBW rating at 800, versus 400 for the 2 TB and 200 for the 1 TB, scaling linearly with NAND capacity.

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Last updated: 2026-06-05. Source: https://ssdrive.net/team-group-cardea-z44q-4-tb