# Crucial T700 4 TB: the high-capacity PCIe 5.0 entry with 2,400 TBW (2026)

The Crucial T700 4 TB is a PCIe 5.0 x4 NVMe SSD built on the Phison PS5026-E26 controller and Micron 232-layer TLC NAND, rated 12,400 MB/s reads, 1,500,000 IOPS, and 2,400 TBW with a 5-year warranty.

Quick answer: The Crucial T700 4 TB is the highest-capacity, highest-endurance variant in Crucial's Gen5 lineup, carrying 2,400 TBW and the largest SLC write cache of the three T700 models — both useful for sustained professional workloads. It delivers 12,400 MB/s reads, 1,500,000 IOPS, and a 5-year warranty on the same Phison E26 and Micron B58R NAND platform as the T705, at a lower price point.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 4 TB |
| Interface | M.2 5.0 |
| 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 | 1500000 |
| Random write IOPS | 1500000 |
| Endurance | 2400 TBW |
| MTBF | 2000000 |
| Warranty | 5 years |

## Performance

The Crucial T700 4 TB is rated at 12,400 MB/s sequential reads and 11,800 MB/s sequential writes over PCIe 5.0 x4, confirmed by Tom's Hardware's dedicated 4 TB review. Random performance matches the 2 TB model at the full Phison E26 ceiling: 1,500,000 read IOPS and 1,500,000 write IOPS.

The 4 TB benefits from the largest SLC write cache of the T700 range. In sequential write workloads the drive sustains full rated 11,800 MB/s throughput for longer before the SLC buffer saturates and throughput transitions to direct TLC write rates. This distinction is most relevant for users performing continuous large-file writes — renders, multi-stream video captures, or full backup runs. For gaming and everyday use the SLC cache is more than adequate and the rated speeds are representative.

Sequential reads of 12,400 MB/s are approximately double the throughput of the fastest PCIe 4.0 NVMe drives, providing bandwidth for DirectStorage game asset streaming. The 1,500,000 IOPS rating handles the random small-block access patterns that dominate conventional game loading and OS operations.

## Endurance, TBW & Warranty

Crucial covers the T700 with a 5-year warranty — not the 2-year figure appearing in some database entries. The 4 TB model carries 2,400 TBW (terabytes written), the highest endurance rating in the T700 lineup. Coverage expires at whichever threshold is reached first: five years from purchase, or 2,400 TBW of cumulative writes.

At 30 GB per day, exhausting 2,400 TBW would take over 200 years. At 100 GB per day the figure is around 66 years. Even at 1,000 GB per day sustained — a continuous professional workload very few desktop systems generate — the drive would reach 2,400 TBW in approximately 6.6 years, approaching but still within the 5-year warranty period. The 4 TB model is therefore suitable for heavy professional write workloads that would exhaust the lower-capacity models within warranty. Warranty service is provided through Crucial's regional support channels.

## Pros and Cons

**Pros:**

- 12,400 MB/s sequential reads on PCIe 5.0 x4
- 1,500,000 read and write IOPS — full Phison E26 ceiling
- 2,400 TBW — highest endurance rating in the T700 lineup
- Largest SLC write cache of all three T700 capacities
- Micron 232-layer B58R TLC NAND with LPDDR4 DRAM cache
- 5-year warranty from Crucial
- Available with or without factory heatsink
**Cons:**

- Superseded by T705 4TB (14,500 MB/s reads) on the same hardware platform
- Double-sided PCB — check M.2 component clearance on compact boards
- Requires good M.2 thermal management — E26 throttles without adequate cooling
- Premium price for 4 TB capacity tier
- No meaningful performance benefit over PCIe 4.0 drives on non-Gen5 platforms


## Verdict

The Crucial T700 4 TB is the highest-capacity, highest-endurance variant in Crucial's Gen5 lineup, carrying 2,400 TBW and the largest SLC write cache of the three T700 models — both useful for sustained professional workloads. It delivers 12,400 MB/s reads, 1,500,000 IOPS, and a 5-year warranty on the same Phison E26 and Micron B58R NAND platform as the T705, at a lower price point.

Choose it if you need 4 TB of PCIe 5.0 storage and prefer the T700's lower price over the T705's higher sequential throughput. The 2,400 TBW covers even demanding professional write schedules within the warranty term.

Skip it in favour of the T705 4 TB if sequential peak speeds matter and pricing is close. Skip it entirely if your platform only supports PCIe 4.0 — at that generation the full 12,400 MB/s read bandwidth is unavailable regardless of which drive is installed.

## Frequently Asked Questions

### What is the TBW endurance of the Crucial T700 4 TB?

The Crucial T700 4 TB carries a rated endurance of 2,400 TBW (terabytes written), the highest of all three T700 capacities. This represents the total cumulative write budget before the 5-year warranty expires. At 30 GB per day — a typical consumer workload — exhausting 2,400 TBW would take over 200 years. At 100 GB per day the figure is around 66 years. Even at a sustained 1,000 GB per day, the drive reaches 2,400 TBW in approximately 6.6 years — within, but close to, the 5-year warranty boundary. The 4 TB is therefore the most suitable T700 for sustained high-volume professional write workloads.

### How does the Crucial T700 4 TB compare to the 2 TB model?

The 4 TB and 2 TB models share the same sequential speeds (12,400/11,800 MB/s) and the same maximum IOPS (1,500,000 read and write). The differences are capacity, TBW endurance (2,400 vs 1,200 TBW), and SLC cache size. The 4 TB has the largest SLC write cache of the T700 lineup, sustaining full rated write speeds across longer burst windows before any throughput drop-off. For everyday workloads the practical difference is minimal; for continuous large-file writing the 4 TB's expanded cache provides meaningful headroom.

### How does the Crucial T700 4 TB compare to the T705 4 TB?

The T705 4 TB, released in 2024, reaches 14,500 MB/s sequential reads versus 12,400 MB/s on the T700 — approximately a 17% uplift. Both drives use the same Phison PS5026-E26 controller and Micron 232-layer B58R TLC NAND; the T705's speed comes from firmware and controller binning improvements rather than a new NAND generation. Endurance is comparable: the T705 4 TB also carries high TBW coverage. If the T705 4 TB is priced similarly, it is the better choice for raw throughput. If the T700 4 TB is meaningfully cheaper and 12,400 MB/s reads are sufficient for your workload, it remains a capable option.

### Is the Crucial T700 4 TB double-sided?

Yes, the 4 TB T700 uses a double-sided PCB to accommodate the NAND dies required for the capacity. Most standard-height M.2 slots on consumer ATX and mATX motherboards support double-sided drives. However, some compact ITX boards and low-profile designs have component height restrictions on the underside of the M.2 slot. Check your motherboard's M.2 specification before purchasing to confirm double-sided drive support.

### What warranty does the Crucial T700 4 TB carry?

The Crucial T700 carries a 5-year warranty — not the 2-year figure that appears in some third-party database entries. The 4 TB model's coverage is subject to a 2,400 TBW endurance limit; the warranty expires at whichever threshold is reached first: five years from purchase, or 2,400 TBW of cumulative writes. Warranty service is handled through Crucial's regional support network.

### Does the Crucial T700 4 TB need a heatsink?

It is strongly recommended. The Phison PS5026-E26 controller runs warmer than PCIe 4.0 predecessors due to the higher signalling frequency of PCIe 5.0, and will throttle under sustained sequential writes without adequate thermal management. The heatsink variant of the T700 ships with an aluminium and nickel-plated copper cooler. If using the bare M.2 module, ensure the M.2 slot has good airflow from a case fan, or use a motherboard-supplied M.2 heatspreader. Throttling manifests as a drop in write throughput under sustained workloads, not as an error or failure.

### Is the Crucial T700 4 TB suitable for content creation workloads?

Yes, the 4 TB model is the most appropriate T700 variant for sustained content creation use. The largest SLC write cache of the T700 lineup means longer continuous writes — renders, export jobs, proxy generation — proceed at the full 11,800 MB/s rated speed before any drop-off. At 12,400 MB/s sequential reads, reading large project files, loading assets, and shuttle scrubbing high-bitrate footage is fast. The 2,400 TBW endurance comfortably accommodates heavy professional write schedules over a multi-year warranty period.

### How does the T700 4 TB compare to PCIe 4.0 drives at the same capacity?

The T700 4 TB's 12,400 MB/s sequential read speed is approximately double that of the fastest PCIe 4.0 NVMe drives, which top out near 7,000 MB/s. In sequential file transfers and DirectStorage workloads the advantage is clear. In random access workloads — which determine OS responsiveness and game loading — the practical gap narrows; PCIe 4.0 drives like the WD Black SN850X 4 TB and Samsung 990 Pro 4 TB already saturate the random bandwidth available to most applications. The T700 4 TB is worth the premium on a PCIe 5.0 platform where the full sequential bandwidth is usable; on a PCIe 4.0 system, a PCIe 4.0 drive at the same capacity will deliver equivalent day-to-day performance at lower cost.

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Last updated: 2026-06-13. Source: https://ssdrive.net/crucial-t700-4-tb