# PCIe 5.0 at 1TB: The Entry Point That Still Outpaces Every PCIe 4.0 Drive (2026)

The Crucial T705 1TB brings the Phison PS5026-E26 platform and Micron 232-layer TLC NAND to the smallest capacity in the lineup, delivering 13,600 MB/s sequential reads at a price point that makes PCIe 5.0 accessible to a wider range of buyers.

Quick answer: The Crucial T705 1TB is the right choice for buyers who want PCIe 5.0 performance at the lowest available capacity without compromise on the core platform. The Phison E26 controller, Micron 232-layer TLC NAND, and dedicated DRAM are all present — nothing is removed to hit the 1TB price point. The sequential write rating of 10,200 MB/s is lower than the 2TB model's 12,700 MB/s, which is worth knowing if large file transfers are a priority.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 1 TB |
| Interface | M.2 5.0 |
| Controller | Phison PS5026-E26 8 channel |
| Memory type | Micron 232-L B58R 3D TLC |
| DRAM cache | Yes |
| Sequential read | 13600 MB/s |
| Sequential write | 10200 MB/s |
| Random read IOPS | 1400000 |
| Random write IOPS | 1750000 |
| Endurance | 600 TBW |
| MTBF | 2000000 |
| Warranty | 5 years |

## Performance

Crucial rates the T705 1TB at 13,600 MB/s sequential reads and 10,200 MB/s sequential writes — the lowest figures in the T705 family, but still the fastest tier in consumer storage. Random performance is specified at 1,400,000 read IOPS and 1,750,000 write IOPS at queue depth 32.

The write speed gap between the 1TB (10,200 MB/s) and 2TB (12,700 MB/s) is the most practical difference between these capacities. Sequential write-heavy workflows — large video project copies, OS reinstalls, backup transfers — will complete noticeably faster on the 2TB. Sequential read speeds are closer (13,600 vs 14,500 MB/s), and in real-world game loading and application launches the gap is rarely perceptible.

Random IOPS at low queue depths, which govern OS responsiveness and application launch times, are strong. The dedicated DRAM cache ensures the controller does not fall back to HMB, keeping 4K random read latency tight. Under sustained sequential writes that exceed the SLC write cache, the drive transitions to direct TLC writes at a lower rate — normal behavior for all TLC-based SSDs. The 1TB model's cache is proportionally smaller than the 2TB or 4TB, so sustained write sessions will exhaust it sooner.

PCIe 5.0 x4 bandwidth is required for full performance. In a PCIe 4.0 slot, the T705 will operate at PCIe 4.0 speeds and is still functional, but the primary reason to buy it over a PCIe 4.0 drive would be eliminated.

## Endurance, TBW & Warranty

The Crucial T705 1TB is covered by a five-year limited warranty from the date of original purchase, with an endurance rating of 600 TBW. The warranty is valid for whichever limit — five years or 600 TBW — is reached first. At 600 TBW, the drive accommodates up to 120 TB written per year across the warranty period. A user writing 50 GB per day — a heavy desktop workload covering large game installs, video editing scratch, and regular backups — accumulates roughly 18 TB per year, reaching the TBW threshold in approximately 33 years. Even at 200 GB per day, the endurance budget lasts over eight years. For the overwhelming majority of buyers, the five-year warranty expiration is the operative limit, not the TBW figure. MTBF is rated at 1.5 million hours.

## Pros and Cons

**Pros:**

- 13,600 MB/s sequential reads — faster than any PCIe 4.0 drive at this capacity
- Phison PS5026-E26 8-channel controller with dedicated DRAM on all SKUs
- Micron 232-layer B58R TLC NAND with well-documented reliability characteristics
- Five-year warranty with 600 TBW endurance
- Available with a low-profile heatsink SKU for motherboards lacking M.2 thermal coverage
- Standard M.2 2280 form factor fits desktops and compatible laptops
**Cons:**

- Sequential write speed (10,200 MB/s) is 20 percent lower than the 2TB model — a real gap for large-file workloads
- Requires a PCIe 5.0 x4 M.2 slot to reach rated speeds; PCIe 4.0 hosts cap performance well below spec
- Smaller NAND pool means a proportionally smaller SLC write cache than the 2TB or 4TB
- Price premium over PCIe 4.0 drives at 1TB is harder to justify for purely gaming or light desktop use
- PCIe 5.0 thermal output is higher than PCIe 4.0 equivalents; a heatsink is recommended


## Verdict

The Crucial T705 1TB is the right choice for buyers who want PCIe 5.0 performance at the lowest available capacity without compromise on the core platform. The Phison E26 controller, Micron 232-layer TLC NAND, and dedicated DRAM are all present — nothing is removed to hit the 1TB price point. The sequential write rating of 10,200 MB/s is lower than the 2TB model's 12,700 MB/s, which is worth knowing if large file transfers are a priority.

Buyers who move mostly large files — video production, data migration, large archive transfers — will find more value stepping up to the 2TB model. Those who need a fast system drive for gaming, development, or general desktop use will see the full benefit of the PCIe 5.0 platform at 1TB. The five-year warranty and 600 TBW endurance rating are appropriate for the capacity.

## Frequently Asked Questions

### How does the Crucial T705 1TB compare to the 2TB model?

The 1TB T705 is rated at 13,600 MB/s sequential reads and 10,200 MB/s writes. The 2TB reaches 14,500 MB/s reads and 12,700 MB/s writes — roughly a 7 percent read improvement and a 25 percent write improvement. Both models use identical controller and NAND. The write speed difference is the most practically significant: heavy sequential write workloads will run faster on the 2TB. For a system drive used primarily for gaming and applications, the gap is rarely felt.

### Does the Crucial T705 1TB need a PCIe 5.0 motherboard?

Yes, to reach the rated 13,600 MB/s sequential reads, a PCIe 5.0 x4 M.2 slot is required. This means a motherboard with an Intel 12th Gen or newer (with PCIe 5.0 M.2 support), or AMD Ryzen 7000 series or newer. In a PCIe 4.0 slot, the drive operates at PCIe 4.0 speeds — roughly 7,000 MB/s sequential reads — which is still fast but loses the primary advantage over existing PCIe 4.0 drives. Check your motherboard's M.2 slot specifications before purchasing.

### What is the TBW rating for the Crucial T705 1TB?

The 1TB model carries a 600 TBW endurance rating under a five-year limited warranty. This means the warranty covers the drive until it has had 600 terabytes written through it or five years have passed — whichever comes first. At a rate of 50 GB written per day, a heavy desktop workload, the drive would reach 600 TBW in roughly 33 years. The five-year warranty expiration is the practical limit for most users.

### Is the heatsink version worth buying?

PCIe 5.0 SSDs generate more heat than PCIe 4.0 equivalents under sustained load. The heatsink SKU (CT1000T705SSD5) adds a low-profile aluminum spreader and is recommended if your motherboard's M.2 slot lacks a built-in thermal cover. If your board already includes an M.2 heatsink, the bare drive (CT1000T705SSD3) is functionally equivalent and typically priced lower. Both SKUs are otherwise identical in hardware.

### How does the Crucial T705 1TB compare to the Samsung 990 Pro 1TB?

The T705 1TB is a PCIe 5.0 drive rated at 13,600 MB/s sequential reads; the Samsung 990 Pro 1TB is PCIe 4.0 rated at 7,450 MB/s reads. In sequential transfer benchmarks, the T705 is nearly twice as fast. In real-world gaming and application performance, the gap is much smaller — most current games and applications cannot saturate a high-end PCIe 4.0 drive. The 990 Pro is typically less expensive; the T705 makes more sense for large-file workflows where the bandwidth difference is realized.

### What NAND does the Crucial T705 1TB use?

The T705 1TB uses Micron 232-layer B58R 3D TLC NAND — the same die across all T705 capacities. Micron manufactures this NAND directly; Crucial is Micron's consumer brand, so there is no third-party NAND dependency. The 232-layer stack is well-characterised in independent reviews and offers strong endurance characteristics relative to earlier TLC generations.

### Is the Crucial T705 compatible with PS5?

The T705 1TB uses the M.2 2280 form factor, which fits the PS5 M.2 expansion slot. Sony recommends installing an M.2 SSD with a heatsink in the PS5, so the CT1000T705SSD5 heatsink SKU is the better choice for console use. The drive's PCIe 5.0 interface is backwards-compatible with the PS5's PCIe 4.0 slot and will operate at PS5 speeds, which is sufficient for the console's storage bandwidth requirements.

### Should I buy the 1TB or step up to the 2TB T705?

Buy the 1TB if you want the T705 platform at the lowest cost and your primary workloads are gaming, OS use, and application storage where 1TB is sufficient capacity. Step up to the 2TB if you move large files regularly — video projects, game library transfers, large backup copies — where the higher sequential write speed (12,700 MB/s vs 10,200 MB/s) will make a measurable difference, or if you simply need more than 1TB of fast NVMe storage.

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Last updated: 2026-06-13. Source: https://ssdrive.net/crucial-t705-1-tb