What Is Service D On S550 2007
Our Verdict
While WD Blue 500GB SN550 has slower sustained write performance than its predecessor, it even so offers very competitive performance for very low pricing. It comes backed with a 5-yr warranty, too.
For
- Competitive performance
- Affordable and efficient
- 5-year warranty
- Single-sided PCB at all capacities
Against
- Small SLC cache
- Slower direct-to-TLC write speeds than its predecessor
- Unflattering aesthetic
- Ability optimization on desktops could be ameliorate
Tom's Hardware Verdict
While WD Blue 500GB SN550 has slower sustained write operation than its predecessor, it nonetheless offers very competitive functioning for very low pricing. It comes backed with a 5-year warranty, too.
Pros
- +
Competitive performance
- +
Affordable and efficient
- +
5-year warranty
- +
Unmarried-sided PCB at all capacities
Cons
- -
Small SLC cache
- -
Slower straight-to-TLC write speeds than its predecessor
- -
Unflattering aesthetic
- -
Power optimization on desktops could exist amend
Maybe you want to upgrade the cramped SSD in your ultra-low-cal notebook. Or maybe y'all but want a reliable and affordable NVMe SSD for your new gaming rig. In either case, WD's mainstream NVMe SSD that will fit the bill nicely. With performance figures that peak at 2.4 GBps and very depression MSRPs, the Blue SN550 offers tremendous value.
Back when we start reviewed the WD Blue SN500, we were disappointed that information technology wasn't offered in a 1TB capacity. This may accept been to drive upwards sales on the 1TB and 2TB WD Black SN750. Simply now the company has released a new Blue SN550 with a 1TB maximum capacity. Aside from a capacity bump, the Blue SN550 packs a few upgrades nether the hood, including a faster controller and some of the latest 96-layer TLC NAND wink available.
Specifications
| WD Blue SN550 250GB | WD Blue SN550 500GB | WD Blue SN550 1TB | |
|---|---|---|---|
| Pricing | $54.99 | $64.99 | $99.99 |
| Chapters (User / Raw) | 250GB / 256GB | 500GB / 512GB | 1000GB / 1024GB |
| Class Factor | 1000.two 2280 | K.2 2280 | M.2 2280 |
| Interface / Protocol | PCIe iii.0 x4 / NVMe 1.4 | PCIe iii.0 x4 / NVMe 1.iv | PCIe 3.0 x4 / NVMe 1.4 |
| Controller | WD Compages | WD Architecture | WD Architecture |
| DRAM | DRAMless | DRAMless | DRAMless |
| Memory | SanDisk 96L TLC | SanDisk 96L TLC | SanDisk 96L TLC |
| Sequential Read | two,400 MBps | 2,400 MBps | 2,400 MBps |
| Sequential Write | 950 MBps | 1,750 MBps | ane,750 MBps |
| Random Read | 170,000 IOPS | 300,000 IOPS | 410,000 IOPS |
| Random Write | 135,000 IOPS | 240,000 IOPS | 405,000 IOPS |
| Security | N/A | Northward/A | N/A |
| Endurance (TBW) | 150 TB | 300 TB | 600 TB |
| Office Number | WDS250G2B0C | WDS500G2B0C | WDS100T2B0C |
| Warranty | 5-Years | 5-Years | v-Years |
WD's Bluish SN550 is bachelor in 250GB, 500GB, and 1TB capacities to suit the mainstream crowd. Pricing is low, with MSRPs of $54.99, $64.99, and $99.99 respectively. WD rates the SSD to deliver sequential read speeds of up to two,400 MBps and write speeds of up to 1,750 MBps, although the smallest 250GB capacity tin can only hit 950 MBps on the write side of things.
Furthermore, the write speed is based on the SSD'due south write cache. Like nearly SSDs these days, the WD Bluish SN550's write performance degrades after the write cache fills -- more on that shortly. In terms of random performance, the company rates the SN550 to hit upward of 410,000/405,000 IOPS read/write.
You lot can easily secure erase the SN550 if you have a motherboard with the feature to do then built-in. Trim and S.G.A.R.T. data reporting are supported. And with a multi-gear ECC scheme also as various other standard flash management technologies to assist the NAND wink's longevity, the SSD is rated to endure upward to 600TB of writes at the largest capacity -- if the drive is within its 5-year warranty, that is.
Software and Accessories
WD supports the company's SSDs past providing end-users SSD toolbox, as well equally cloning software. WD's SSD Dashboard is a well-designed Windows-based SSD Toolbox. It allows you to monitor and analyze your SSD's health, performance, as well equally update the firmware if the company releases one in the time to come.
Along with the toolbox, Acronis True Image WD Edition is a simple-to-utilize cloning program that allows you to chop-chop and hands migrate your data from your one-time bulldoze to your new WD SSD. It tin can also be used for creating organisation images for back upwards, which can be quite helpful if/when Windows decides to intermission after a arrangement update.
A Closer Wait
True to its proper name, WD's Blueish SN550 comes with a blue PCB, in a single-sided M.ii 2280 grade factor, then information technology can fit in even the thinnest of devices. WD's product team are adequately tight-lipped on disclosing hardware specifics enabling the Blueish SN550 to perform how it does, just we managed to narrow things down a fleck on our own.
WD designed the controller and firmware that powers the SSD. The Blue SN550's NVMe one.4-compliant controller interfaces with the host over a PCIe 3.0 x4 link, a step up from the x2 link the previous SN500 had, which helps performance a bit.
Architecturally, nosotros recall the new controller is close to WD's 28nm tri-core NVMe controller on the SN750. But the company cutting it downwards a scrap from an 8-channel design to 4-channels, and mayhap lowered the core count or are using a smaller manufacturing process node due to its very meaty size and low power consumption figures. This translates into a bit less peak functioning, only meliorate power efficiency. Plus, a simpler design can aid lower the cost to industry.
Virtually SSDs apply DRAM or leverage NVMe's Host Memory Buffer (HMB) characteristic to assist accelerate Flash Translation Layer (FTL) tasks to ensure responsive performance. While the WD Blue SN500 went without DRAM or HMB and instead relied solely on a pocket-size portion of SRAM for the task, WD'due south Bluish SN550 adopts the characteristic. Windows reports a default resource allotment amount of 64MB of the host organization's DRAM.
Speaking of wink, WD is shipping the SN550 with SanDisk branded 96L BiCS4 TLC NAND flash. On our 1TB model, there is merely one NAND parcel, filled with sixteen 512Gb dies, located on the opposite end of the PCB of the controller. This is WD's fashion of upgrading the thermal design of the Blue for amend-sustained operation, as separating the components like this helps to distribute and dissipate heat and prevents heat from one component soaking into the other.
Source: https://www.tomshardware.com/reviews/wd-blue-sn550-m2-nvme-ssd-review-best-dramless-ssd-yet
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