It be not the force for mavens writing very immense files items, but for the frequent person it’s far a noteworthy deal.

crucial p5 ssd primary


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Having reviewed both Well-known’s P1 and P2 bargin NVMe SSD’s, I expected extra of the same middling performance from the recent P5. I was notorious: The P5 used to be strictly greater-crust with same old workloads, and if fact be told took home first prize in a single take a look at. It’s not the force you wish for extraordinarily lengthy writes, but in some other case—it hauls the freight. 

This assessment is phase of our ongoing roundup of the absolute best SSDs. Mosey there for files on competing merchandise and how we tested them.

Design and Specs

The P5 is right away accessible in four capacities: 250GB ($63 on Amazon), 500GB ($87 on Amazon), the 1TB we tested ($180 on Amazon), and 2TB ($400 on Amazon). These prices are magnificent considerable heading within the appropriate direction for a mid-fluctuate NVMe SSD. Expose that the 250GB model is rated for half the write lunge of the higher variations. This is overall across the industry in that capability. A single NAND chip, moderately than the 2 or extra with higher capacities, doesn’t hang as many files traces.

The P5 utilizes a Micron-designed controller and 96-layer TLC (Triple-Diploma Cell/3-bit) NAND, varied portions of that are allocated dynamically as secondary SLC cache. This augments the predominant DRAM cache (1GB per 1TB of NAND). SLC cache is only writing the cell as an off/on binary voltage, rather than the extra sophisticated and error-inclined voltage required to describe a 2-bit (MLC), 3-bit (TLC), or 4-bit (QLC) mark.

The P5 carries a five-year guarantee and is rated for 600 TBW (TeraBytes Written) per 1TB of capability. That’s meager by new standards, but nonetheless extra files than the frequent person is possible to jot down in a decade.  


To be definite, my shock over the P5’s handsome performance just isn’t as a consequence of a lack of religion in Micron’s skill to originate a noteworthy force—merely that they’ve despatched me most attention-grabbing cut price kinds lately. The numbers garnered by the 1TB P5 I tested had been extraordinarily impressive, even throughout somewhat immense write tasks. 

CrystalDiskMark 6 rated the P5 as the quickest NVMe/PCIe 3.0 (by a whisker over the Seagate FireCuda 520) reader we’ve ever tested. The consequence (gold bars beneath) is well throughout the margin of error, but hi there… a have faith is a have faith.

crucial p5 cdm6 IDG

The Well-known P5 (gold bars above) garnered the quickest CrystalDiskMark 6 sustained write accumulate we’ve viewed out of a PCIe 3.x NVMe SSD. Longer bars are greater. Longer bars are greater.

The P5 used to be impressive within the 48GB learn/write assessments too, despite the incontrovertible fact that again, the competition used to be very tight.

crucial p5 48gb IDG

The P5 used to be 2nd most attention-grabbing to the WD Dark SN750 when it came to overall learn and writer performance in our 48GB switch assessments. Shorter bars are greater.

Where truth struck home used to be within the 450GB write take a look at. Clearly the P5 ran out of SLC cache, despite the incontrovertible fact that it used to be to this point into the assignment (about 300GB) that we can narrate few proper-world eventualities where you’d if fact be told compare the slowdown. It’s not by myself in this habits, as you would per chance well per chance presumably compare. Of the mid-fluctuate 1TB drives we’ve tested, most attention-grabbing the Kingston KC2500 confirmed right here doesn’t slack down. Expose that as an SSD fills up, there’s much less NAND readily accessible for cache, so lengthy writes will slack down. We take a look at with the force empty, so right here is easiest-case performance.

crucial p5 450gb IDG

The P5 ran out of cache throughout our 450GB write assessments, as produce most mid-fluctuate NVMe SSDs. The exception is the Kingston KC2500. The winner right here, Seagate’s prominent FireCuda 520, is a high-tier force.

No subject when a slowdown occurs, it does happen with most mid-fluctuate drives– so there’s nonetheless a reason to switch for a educated-level force. Except clearly you hang in thoughts Kingston’s mid-fluctuate KC2500: Its artificial benchmark assessments aren’t as impressive as those of quite loads of drives, but it rocks in lengthy transfers.

Testing is completed on Dwelling windows 10 64-bit working on a Core i7-5820Good sufficient/Asus X99 Deluxe system with four 16GB Kingston 2666MHz DDR4 modules, a Zotac (Nvidia) GT 710 1GB x2 PCIe graphics card, and an Asmedia ASM2142 USB 3.1 Gen 2 (10Gbps) card. Additionally on board are a Gigabyte GC-Alpine Thunderbolt 3 card and Softperfect’s Ramdisk 3.4.6, which is historical for the 48GB switch assessments.


The P5 is an handsome mid-fluctuate SSD that can flee with the nice drives in everyday performance, and even in all however the most stressful lengthy transfers. It’s a transient-lister for definite. Nice job, Well-known.

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  • 99.99 p.c of the time the P5 will develop competitively with NVMe SSDs costing far extra. An handsome mid-priced product from Well-known.


    • Very just appropriate everyday performance
    • Huge bang for buck


    • Will slack down throughout very lengthy writes

Jon is a Juilliard-trained musician, used x86/6800 programmer, and lengthy-time (late 70s) pc enthusiast living within the San Francisco bay space. [email protected]