# BIWIN Black Opal X570 Pro 4TB: Maximum Capacity on Gen5 (2026)

The BIWIN Black Opal X570 Pro 4TB is a PCIe 5.0 NVMe SSD rated at 14,000 MB/s sequential reads and 13,000 MB/s writes, pairing Silicon Motion's SM2508 controller with Micron 232-layer TLC NAND and 4GB of LPDDR4 DRAM in a single-sided M.2 2280 format.

Quick answer: The BIWIN Black Opal X570 Pro 4TB is the strongest configuration in the lineup: the SM2508's 8-channel architecture operates at full parallelism, the write speed reaches its 13,000 MB/s ceiling on par with the 2TB model, the DRAM cache grows to 4GB, and the TBW endurance reaches 3,000 TBW under a 5-year warranty. For buyers who need a single-drive solution for large media libraries, game collections exceeding 2TB, or content-creation workstations where repeated large-file transfers are routine, the 4TB X570 Pro consolidates that storage onto one PCIe 5.0 slot without moving to a double-sided PCB.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 4 TB |
| Interface | M.2 5.0 |
| Controller | Silicon Motion SM2508 8 Channel |
| Memory type | Micron 232-L TLC |
| DRAM cache | Yes |
| Sequential read | 14000 MB/s |
| Sequential write | 13000 MB/s |
| Random read IOPS | 2000000 |
| Random write IOPS | 1600000 |
| Endurance | 3000 TBW |
| MTBF | 1500000 |
| Warranty | 5 years |

## Performance

The BIWIN Black Opal X570 Pro 4TB is rated at 14,000 MB/s sequential reads and 13,000 MB/s sequential writes on PCIe 5.0 x4. KitGuru's CrystalDiskMark 8 test of this exact unit measured 14,371 MB/s reads and 13,408 MB/s writes — matching the rated figures closely and confirming that the 13,000 MB/s write spec is not conservative padding. ATTO benchmark results from the same review returned 13,900 MB/s reads and 12,500 MB/s writes, which reflects typical slight divergence between synthetic tools at this performance tier.

For random access the 4TB model is rated at 2,000,000 read IOPS and 1,600,000 write IOPS. These figures benefit from the 4TB model's higher NAND die count relative to the 1TB variant, where more parallel die allow more simultaneous random operations. The 4GB LPDDR4 DRAM cache — the largest in the lineup — keeps the address-translation table fully resident in low-latency memory, avoiding the HMB round-trips that affect DRAMless designs under heavy random workloads.

The drive carries approximately 208 GB of dynamic pSLC write cache, which absorbs burst writes at SLC speeds before the controller begins writing directly to TLC cells. For sustained sequential writes above that threshold — full 4TB imaging jobs, very large video capture sessions — throughput settles to native TLC write rates, which is normal behaviour for consumer drives at any capacity. The SM2508's 6nm process gives the controller a thermal envelope advantage over the 12nm Phison E26: KitGuru recorded a 57°C peak during write-heavy testing with no external heatsink, which is a controlled result for a Gen5 drive pushing 13,000 MB/s.

## Endurance, TBW & Warranty

BIWIN backs the Black Opal X570 Pro with a 5-year limited warranty across all capacities. The 4TB model carries a TBW (terabytes written) endurance rating of 3,000 TBW — the highest in the lineup and one of the largest endurance budgets available on a consumer PCIe 5.0 drive at this form factor. At a sustained write rate of 100 GB per day, a workload consistent with regular video editing and content creation, 3,000 TBW equates to over 80 years of operation before the endurance threshold is reached. Even at an intensive 500 GB per day — representative of professional capture and archiving workflows — the rated limit would take over 16 years to approach. The 5-year warranty clock will expire long before TBW becomes the binding constraint for any realistic workload. BIWIN's support structure is headquartered in Shenzhen; buyers outside Asia should confirm that their retail channel provides regional warranty service before purchasing through import or grey-market listings, as coverage terms can vary by distributor.

## Pros and Cons

**Pros:**

- 14,000 MB/s sequential reads and 13,000 MB/s writes — full-speed 4TB write performance
- Silicon Motion SM2508 on 6nm: runs cooler than competing Phison E26 Gen5 drives
- 4GB LPDDR4 DRAM cache — largest in the X570 Pro lineup
- 3,000 TBW endurance with 5-year warranty — among the highest on a consumer PCIe 5.0 drive
- Single-sided M.2 2280 — fits PS5 and laptops that reject double-sided modules
- KitGuru measured 14,371 / 13,408 MB/s in CrystalDiskMark — specs match real-world testing
**Cons:**

- Limited brand recognition and retail presence in Western markets vs Samsung, WD, or Crucial
- No bundled heatsink — relies on graphene thermal film; sustained workloads need motherboard thermal contact
- Regional warranty support may be unclear for units purchased via import or grey-market channels
- Narrower independent benchmark and long-term reliability data than established Gen5 competitors
- Premium pricing over the 2TB model without a write-speed increase — the step-up is capacity and endurance only


## Verdict

The BIWIN Black Opal X570 Pro 4TB is the strongest configuration in the lineup: the SM2508's 8-channel architecture operates at full parallelism, the write speed reaches its 13,000 MB/s ceiling on par with the 2TB model, the DRAM cache grows to 4GB, and the TBW endurance reaches 3,000 TBW under a 5-year warranty. For buyers who need a single-drive solution for large media libraries, game collections exceeding 2TB, or content-creation workstations where repeated large-file transfers are routine, the 4TB X570 Pro consolidates that storage onto one PCIe 5.0 slot without moving to a double-sided PCB.

The honest considerations are brand maturity and retail availability. BIWIN does not yet have the established Western retail footprint, RMA network, or independent benchmark depth of Samsung, WD, or Crucial. KitGuru's Worth Buying Award and tech4gamers' positive testing provide reasonable third-party validation, but the review library is still narrower than the established names at this capacity. Buyers who prioritise proven brand support should compare the Crucial T705 4TB or Seagate FireCuda 540 4TB. Those comfortable with a newer brand offering strong hardware for the price will find the X570 Pro 4TB a technically well-rounded choice.

## Frequently Asked Questions

### What are the official specs for the BIWIN Black Opal X570 Pro 4TB?

The 4TB model is rated at 14,000 MB/s sequential reads and 13,000 MB/s sequential writes on PCIe Gen5 x4, NVMe 2.0. Random performance is rated at 2,000,000 read IOPS and 1,600,000 write IOPS. The drive includes 4GB of LPDDR4 DRAM cache and is rated for 3,000 TBW endurance under a 5-year limited warranty. It uses Silicon Motion's SM2508 (8-channel, 6nm) controller with Micron 232-layer 3D TLC NAND in the M.2 2280 single-sided form factor. KitGuru's measured results of 14,371 MB/s reads and 13,408 MB/s writes confirm the rated figures are accurate.

### How does the 4TB write speed compare to the 1TB model?

The 4TB Black Opal X570 Pro is rated at 13,000 MB/s sequential writes, while the 1TB model is rated at only 10,500 MB/s. The difference comes from NAND parallelism: the 4TB model has more NAND die operating in parallel across the SM2508's 8 channels, which raises both the sustained write bandwidth and the pSLC write cache size (approximately 208 GB on the 4TB). The 2TB model also reaches 13,000 MB/s writes, so the 4TB matches the 2TB on write speed while doubling the capacity and TBW rating. For sustained write-intensive workloads, the 4TB and 2TB models are both meaningfully faster than the 1TB.

### What is the TBW endurance rating for the 4TB model?

BIWIN rates the 4TB Black Opal X570 Pro at 3,000 TBW (terabytes written) under a 5-year warranty. At a write rate of 100 GB per day — consistent with regular video editing or content creation — the drive would take over 80 years to exhaust its endurance budget. At 500 GB per day the horizon is still over 16 years. The 5-year warranty clock expires long before TBW becomes a practical concern for any desktop or workstation workload. For comparison, the 1TB model is rated at 750 TBW and the 2TB at 1,500 TBW — the 4TB's 3,000 TBW rating scales linearly with capacity.

### Does the BIWIN Black Opal X570 Pro 4TB need a heatsink?

Not for most workloads, but thermal contact is recommended. The drive ships without an aluminium heatsink and instead uses a graphene thermal film bonded to the NAND package for passive heat spreading. KitGuru's thermal testing of the 4TB under CrystalDiskMark measured a peak of 57°C during write-heavy phases without any external cooler — a controlled result for a Gen5 drive at this performance level. Most Z790, X670E, and Z890 motherboards include M.2 thermal pads that provide adequate supplemental cooling. Compact ITX builds or systems with no M.2 thermal contact will benefit from an inexpensive third-party M.2 heatsink for sustained write workloads.

### Is the BIWIN Black Opal X570 Pro 4TB single-sided or double-sided?

Single-sided M.2 2280, which is notable at 4TB capacity where some competing drives move to double-sided designs. The 4TB is the maximum single-sided capacity in the X570 Pro lineup — the 8TB model uses a double-sided PCB. Single-sided construction matters for PS5 expansion slots, which have a maximum module height of 11.25 mm, and for laptops with M.2 slot covers that restrict component height. If PS5 or thin-laptop compatibility is a factor in your buying decision, the 4TB X570 Pro fits where a double-sided drive would not.

### How does the BIWIN X570 Pro 4TB compare to the Crucial T705 4TB?

Both are PCIe 5.0 NVMe drives with DRAM cache and Micron TLC NAND, but they use different controllers. The Crucial T705 uses Phison's E26 (12nm); the BIWIN X570 Pro uses Silicon Motion's SM2508 (6nm). The SM2508's more advanced process node gives it a thermal advantage under sustained loads — the X570 Pro runs cooler. Crucial's T705 has a much larger independent review library and established Western RMA network. The T705 4TB is rated at 14,500 MB/s read and 13,000 MB/s write — a modest 500 MB/s read edge over the X570 Pro's 14,000 MB/s. TBW on the T705 4TB is 2,400 TBW versus 3,000 TBW on the X570 Pro. At comparable pricing the X570 Pro edges the T705 on endurance; the T705 wins on brand support and review confidence.

### What use cases benefit most from the 4TB capacity at PCIe 5.0 speeds?

Video editors and cinematographers who work in 4K or 8K RAW formats benefit from both the capacity and the 13,000 MB/s write speed, which can ingest footage and write edit cache simultaneously without bottlenecking. Gamers with libraries exceeding 2TB — particularly those running multiple open-world titles with large asset packs — benefit from storing an entire active library on a single fast drive without tiering to slower storage. Workstation users running AI model training, 3D rendering, or large dataset processing benefit from the 4TB capacity keeping large working sets on the fastest available NVMe tier. The 3,000 TBW endurance rating also makes the 4TB practical for workflows involving frequent large rewrites, such as disk imaging or compilation artifact caching.

### Is BIWIN a trustworthy manufacturer for a 4TB SSD purchase?

BIWIN Storage Technology Co., Ltd. is a Shenzhen-based manufacturer with a long history in OEM NAND and embedded memory supply. The Black Opal consumer SSD line is newer, and BIWIN lacks the retail footprint and long-term reliability data of Samsung, WD, or Crucial in Western markets. Independent reviews from KitGuru and tech4gamers have been positive — the 4TB received KitGuru's Worth Buying Award at 8.5/10. The primary risk factors for Western buyers are regional warranty support clarity and the absence of a large RMA dataset for long-term reliability. Purchasing through a local retailer that offers its own return guarantee mitigates much of that uncertainty, as the 5-year warranty itself is competitive by specification.

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Last updated: 2026-08-17. Source: https://ssdrive.net/biwin-pci-e-5-black-opal-x570-pro-4-tb