![Western Digital 4TB WD Blue SN5000 NVMe Internal Solid State Drive SSD - PCIe Gen 4.0, M.2 2280, Up to 5,500 MB/s - WDS400T4B0E [New Generation]](https://m.media-amazon.com/images/I/61dDFTo+GnL._AC_SL1500_.jpg)
Western Digital 4TB WD Blue SN5000 NVMe Internal Solid State Drive SSD - PCIe Gen 4.0, M.2 2280, Up to 5,500 MB/s - WDS400T4B0E [New Generation]
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AI Verdict
This 4TB PCIe Gen 4 QLC NVMe SSD with 5,500 MB/s read is for budget-conscious users needing high capacity for large files, not sustained heavy writes.
This 4TB NVMe SSD is a situational fit, offering substantial capacity and PCIe Gen 4 read speeds up to 5,500 MB/s, making it suitable for storing large datasets and applications. However, its QLC NAND and DRAM-less design mean sustained write performance will not match higher-tier PCIe Gen 4 drives, limiting its appeal for intensive write workloads.
If you need consistent, high-speed write performance for professional creative work, look for PCIe Gen 4 NVMe SSDs with TLC NAND and a dedicated DRAM cache.
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Pros
- Offers 4TB capacity for extensive storage needs.
- Achieves up to 5,500 MB/s sequential read speeds.
- Features 1,200 TBW endurance for the 4TB model.
- Single-sided M.2 2280 form factor enhances compatibility with laptops and compact systems.
- Includes Acronis True Image for data migration and Western Digital Dashboard for drive health monitoring.
- Operates with power efficiency and maintains relatively cool temperatures.
Cons
- Utilizes QLC NAND, which typically has lower sustained write performance after the pSLC cache is exhausted compared to TLC NAND.
- Lacks a dedicated DRAM cache, relying on 64 MB of Host Memory Buffer (HMB).
- Sequential write speeds of 5,000 MB/s are on the lower end for PCIe Gen 4 drives.
- Performance can be outpaced by other PCIe Gen 4 drives, some of which are similarly priced or cheaper.
- Initial pricing can be high, making it less competitive unless on sale.
Dimension Scores
The 5,500 MB/s read and 5,000 MB/s write speeds are entry-level for PCIe Gen 4, falling behind faster drives in the category.
With 1,200 TBW endurance for 4TB, it's above average for a QLC drive, and WD's nCache 4.0 helps maintain consistent performance.
A 4TB capacity is substantial, allowing for extensive storage of large files and applications without frequent data management.
The M.2 2280 form factor and single-sided design ensure broad compatibility with both desktop and laptop systems.
Best For
- Storing large game libraries or media files where read speeds are prioritized.
- Secondary storage in a desktop PC for bulk data.
- Laptop upgrades needing high capacity in a single-sided M.2 2280 form factor.
- Users with AI-enabled applications that benefit from PCIe Gen 4 read speeds for loading data.
Not Recommended For
- Workloads requiring frequent, sustained large file writes, like continuous video editing or database operations.
- Users expecting top-tier PCIe Gen 4 performance for all operations.
- Budget builds when not on a significant sale, due to competitive alternatives.
Watch Out For
- The QLC NAND means sustained write performance drops significantly once the pSLC cache is full, which can be noticeable during large file transfers.
- Absence of a dedicated DRAM cache means the drive relies on your system's RAM for mapping, potentially impacting performance in some scenarios.
- While rated for 5,500 MB/s read, real-world performance for random operations might not match higher-end PCIe Gen 4 drives.
- Availability at competitive prices can be inconsistent, with many Reddit discussions focusing on quick sell-outs during promotions.
Full Specifications
| ASIN | B0D7MLB76V |
| Brand | Western Digital |
| Color | Blue |
| Series | WD Blue SN5000 |
| Batteries | 1 AAAA batteries required. |
| Hard Drive | 4 TB Solid State Drive |
| Item Weight | 0.201 ounces |
| Manufacturer | Sandisk Technologies, Inc. |
| Hard Disk Size | 4 TB |
| Special Feature | Free Acronis Download |
| Flash Memory Size | 4 TB |
| Hardware Platform | PC |
| Installation Type | Internal Hard Drive |
| Item model number | WDS400T4B0E |
| Compatible Devices | Desktop, Laptop, PC |
| Product Dimensions | 3.15 x 0.87 x 0.1 inches |
| Hard Disk Interface | PCIE x 4 |
| Hard Drive Interface | PCIE x 4 |
| Hard Disk Description | Solid State Drive |
| Item Dimensions LxWxH | 3.15 x 0.87 x 0.1 inches |
| Connectivity Technology | PCIe |
| Digital Storage Capacity | 4 TB |
What Buyers Say
Early expert analysis suggests this 4TB WD Blue SN5000 is a bit of an odd duck in the PCIe Gen 4 market, primarily due to its QLC NAND and DRAM-less design. While it delivers decent read speeds and surprisingly consistent performance for a QLC drive, especially with its pSLC cache, it's often outpaced by other PCIe Gen 4 options, some of which are cheaper. Many discussions online revolve around its pricing, with it being a compelling option only when heavily discounted, as it struggles to compete at its full MSRP. Its single-sided design and power efficiency are frequently mentioned as positives for laptop users.
“Man, I needed a huge drive for my games, and this 4TB SN5000 was on sale for like nothing. It's not the fastest thing ever, but for just dumping my Steam library on it, it's totally fine. Just don't expect to be editing 8K video off it all day.”
Common Praise
- Offers a large 4TB capacity for extensive storage.
- Maintains relatively cool operating temperatures.
- Single-sided M.2 2280 design is ideal for laptop compatibility.
- Provides consistent performance within its pSLC cache, surprising for QLC NAND.
- Comes with useful data migration and monitoring software.
Common Complaints
- Sustained write speeds drop significantly once the pSLC cache is full.
- Lacks a dedicated DRAM cache, which can affect performance consistency.
- Can be slower than other PCIe Gen 4 SSDs, even some cheaper ones.
- Pricing is often a concern, making it less competitive unless on sale.
Ownership Tips
- The drive runs cool, even under moderate load, which is a plus for system thermals.
- The included Acronis software makes migrating an existing system surprisingly painless.
- You'll notice the speed difference most when copying huge files, where the QLC limitations become apparent after the initial burst.
- It's a solid choice for a secondary storage drive, but maybe not your primary boot drive if you're a power user.
Frequently Asked Questions
What kind of NAND flash does this SSD use?
This SSD uses QLC (Quad-Level Cell) NAND flash memory. QLC allows for higher storage density but can result in lower endurance and slower sustained write speeds compared to TLC NAND.
Does this drive have a DRAM cache?
No, this drive does not have a dedicated DRAM cache. It utilizes 64 MB of Host Memory Buffer (HMB) instead.
What are the maximum read and write speeds?
The drive offers up to 5,500 MB/s sequential read speeds and up to 5,000 MB/s sequential write speeds for the 4TB model.
Is this SSD compatible with laptops?
Yes, its M.2 2280 form factor and single-sided design make it compatible with many laptops and desktops that support PCIe Gen 4 NVMe SSDs.
What is the endurance rating (TBW) for the 4TB model?
The 4TB model has an endurance rating of 1,200 TBW (Terabytes Written). This indicates the total amount of data that can be written to the drive over its lifespan before its reliability may degrade.
Buying Guide
When looking at SSDs like this, you need to think about what you're actually doing with it. High capacity like 4TB is awesome for games or big media files, but the type of flash memory, like QLC here, really matters for how it handles constant writing. If you're just reading stuff most of the time, QLC is usually fine, but if you're constantly moving or creating huge files, you'll feel the slowdowns.
PCIe Gen 4
This is the connection speed. Think of it like a highway; Gen 4 is faster than Gen 3, meaning data can travel to and from the drive quicker, which translates to faster game loading or application launches.
QLC NAND
This refers to the type of memory cells used. QLC stores more data per cell, making drives cheaper and higher capacity, but it's generally slower and less durable for writing data compared to TLC NAND, especially after its fast cache fills up.
TBW (Terabytes Written)
This is a measure of how much data you can write to the drive over its lifetime before it might start having issues. A higher TBW means the drive is expected to last longer under heavy write conditions, like filling it up multiple times.
DRAM Cache / HMB
DRAM cache is like a quick-reference index for the drive, helping it find data faster. HMB (Host Memory Buffer) uses a small part of your computer's main RAM instead, which is a cost-saving measure but can sometimes be less efficient than dedicated DRAM.
Alternatives
If this drive doesn't quite fit, look for PCIe Gen 4 NVMe SSDs with TLC NAND for better sustained write performance, or consider drives with higher sequential write speeds and dedicated DRAM cache if your budget allows.
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