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Since then, our lab has passed quite a few PCIe 4.0 x4 SSDs We saw the first demo in early 2019, But no products like Crucial, until now. Crucial P5 Plus It marks the company’s first Gen4 SSD release. It follows the company’s value on the high-end performance agenda very well. It is a reliable one for those seeking next-generation performance at a price lower than the competition. the value of.
Although competitors are working hard to break through the limitations of current PCIe 4.0 features, Crucial has decided to ensure safety by introducing its new PCIe 4.0 NVMe SSD, optimizing it for specific workloads and reliability, instead of trying to include all test metrics Won the gold medal. With a rated speed of only 6.6 GBps, it is not the cutting-edge competitor we expect from such a large memory brand, but it is a solid step in the right direction.
Specification
| product | 500GB | 1TB | 2TB |
|---|---|---|---|
| Price | 107.99 | 179.99 | 367.99 |
| Capacity (user/raw) | 500GB / 512GB | 1000GB / 1024GB | 2000GB / 2048GB |
| Constitutive factors | M.2 2280 | M.2 2280 | M.2 2280 |
| Interface Protocol | PCIe 4.0 x4 / NVMe 1.4 | PCIe 4.0 x4 / NVMe 1.4 | PCIe 4.0 x4 / NVMe 1.4 |
| Controller | Key NVMe architecture | Key NVMe architecture | Key NVMe architecture |
| Dynamic random access memory | LPDDR4 | LPDDR4 | LPDDR4 |
| memory | Micron 176L Thin Layer Chromatography | Micron 176L Thin Layer Chromatography | Micron 176L Thin Layer Chromatography |
| Sequential reading | 6,600 MBps | 6,600 MBps | 6,600 MBps |
| Sequential write | 4,000 MBps | 5,000 MBps | 5,000 MBps |
| Random read | 360,000 IOPS | 630,000 IOPS | 720,000 IOPS |
| Random write | 700,000 IOPS | 700,000 IOPS | 700,000 IOPS |
| Safety | AES 256-bit encryption | AES 256-bit encryption | AES 256-bit encryption |
| Endurance (TBW) | 300 TB | 600 TB | 1,200 TB |
| Part Number | CT500P5PSSD8 | CT1000P5PSSD8 | CT2000P5PSSD8 |
| Warranty | 5 years | 5 years | 5 years |
Crucial’s P5 Plus has 500GB, 1TB and 2TB capacities, and the price is very low for PCIe 4.0 SSD. The suggested retail price of P5 Plus is 107.99 US dollars, 179.99 US dollars and 367.99 US dollars, which is absolutely excellent value for money. In terms of its performance, due to dynamic write acceleration (Crucial’s SLC cache execution).
Like the P5 and most high-end competitors, the P5 Plus comes with a five-year warranty and has a similar durability rating. Thanks in part to RAIN (Redundant Array of Independent NAND), multi-step data integrity algorithms and LDPC ECC, Crucial rated the P5 Plus to withstand writes of up to 1,200 TB at its highest capacity. For smaller capacities, endurance halves as the capacity is halved.
P5 Plus supports TRIM, SMART data report, secure erase function, hardware acceleration based on TCG OPAL 2.0 specification, and AES 256-bit full disk encryption. Once enabled, if you lose your precious hardware due to unforeseen circumstances, it can protect your data and prevent thieves from stealing your data. Because it complies with OPAL 2.0, it also complies with Windows BitLocker.
Software and accessories
Crucial’s P5 Plus comes with an M.2 screw, in case your system has no screws (or you lost your system in the midnight carpet tragedy). Crucial also provides the company’s own SSD toolbox and some cloning software to support P5 Plus.
Crucial Storage Executive allows you to monitor the drive, update its firmware and enable certain features, such as momentum cache, similar to Samsung Magic’s fast mode DRAM cache. The company also offers a download of Acronis True Image for Crucial, allowing you to clone data from your old drive to P5 Plus.
Take a closer look
As the name suggests, Crucial’s P5 Plus looks very similar to the original Key P5It has a black PCB and a clean black sticker on the top of the hardware, and all compliance marks and SKUs are located on the back, invisible. Our 1TB sample uses the M.2 2280 form factor, which is similar to the P5 we reviewed earlier. Although faster, the P5 Plus is still cool when dealing with heavy workloads.
Micron is one of the few vertically integrated SSD suppliers. However, despite being in such a critical position, the company was not frank when disclosing the hardware secrets behind the P5 Plus. The controller is designed internally, and we speculate that it is very similar to the six-core controller that powers the P5, except for the new Gen4 PHY. Considering that the heat output of the controller is lower than P5, the company may reduce the number of cores or choose a smaller process node to manufacture the controller. But we cannot confirm any of these.
In any case, the controller is still an 8-channel design, using LPDDR4 DRAM to accelerate FTL management. The 500GB model and the 1TB model use 1GB DRAM, while the 2TB has 2GB. It also supports NVMe Autonomous Power State Transition (APST) and adaptive thermal protection, which can be started at 80 degrees Celsius and higher to protect data. Thanks to Crucial’s way of programming flash memory, you can also get integrated power-off immunity.
However, the main performance improvement behind the P5 Plus is the flash. Micron’s B47R 176L TLC has a rated interface speed of up to 1,600 MTps, making it one of the fastest NAND on the market. There are two NAND packages in our 1TB sample, and each package is packed with 8 512Gb chips.
This flash memory is different from the previous generation flash memory produced by Micron that we have seen.We covered this in detail The new flash on the preview version of our Phison PS5018-E18, But for those who want to understand the main points, the company’s B47R flash memory does not use a floating gate architecture, but an alternative gate architecture.
Micron’s alternative gate architecture combines two charge traps with the company’s CMOS under-array technology, which reduces the chip size by 30% compared with rival flash memory. Compared with the company’s previous generation 96L TLC, the new alternative gate flash memory replaces the polysilicon gate with metal and uses a different etching method, which greatly reduces the problem of capacitive coupling between cells, reduces the resistance level, and allows it to be used to increase program pulses Slope. All these work together, not only can provide lower read and write latency and higher throughput, but also improve reliability and durability.
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