The Corsair MP400 1TB QLC NVMe SSD: A Fast Evaluate

Following up from our latest have a look at 8TB QLC SSDs, right now we’re having a look on the 1TB Corsair MP400. It is a QLC NVMe SSD utilizing the Phison E12 controller, which places it a step up from earlier QLC SSDs that used four-channel Silicon Movement controllers. In contrast to final week’s evaluate of 8TB SSDs, this time we’re coping with a way more inexpensive capability of 1TB. At 8TB, lots of the downsides of QLC NAND may be overcome by the sheer quantity of flash reminiscence, however this 1TB drive falls towards the low finish of the QLC SSD capability vary and faces actual competitors from entry-level drives utilizing TLC NAND.

Corsair MP400

The MP400 is Corsair’s reply to Sabrent’s Rocket Q and different related SSDs which have adopted the mix of the Phison E12S controller and QLC NAND. In comparison with the Sabrent Rocket Q, Corsair’s specs for the MP400 are a bit extra optimistic on efficiency and a bit decrease on the write endurance score, however we count on the real-world variations between these drives on the identical capability to be insignificant given the near-identical {hardware}.

Corsair MP400 1TB (QLC) and the Corsair Power MP510 (TLC)

Sabrent’s Rocket Q product line covers capacities from 500GB to 8TB. Corsair drops the 500GB possibility, which could be very cheap: we contemplate 1TB to be the naked minimal for a QLC drive to make sense. That is very true of those drives that use an 8-channel Phison E12S controller, half of which fits unused on a 500GB QLC mannequin. Mushkin’s just lately introduced ALPHA collection goes even additional and can solely provide 4TB and 8TB choices.

Corsair MP400 Specs
Capability 1 TB 2 TB 4 TB 8 TB
Kind Issue M.2 2280 PCIe 3 x4
Controller Phison E12S
NAND Flash Micron 1Tbit 96L 3D QLC
Sequential Learn (MB/s) 3480
Sequential Write (MB/s) 1880 3000
Random Learn IOPS (4kB) 190k 380k 610k
Random Write IOPS (4kB) 470k 560k 710k
Energy Consumption 4.0 W 5.5 W 6.5 W 6.5 W
Guarantee 5 years
Write Endurance 200 TB
0.1 DWPD
400 TB
0.1 DWPD
800 TB
0.1 DWPD
1600 TB
0.1 DWPD
Present Retail Costs $114.99


The 1TB capability level is at the moment the quantity spot within the client SSD marketplace for QLC, with probably the most competitors and the most effective costs on a per-GB foundation. QLC SSDs have made multi-TB SSDs extra inexpensive, however 2TB and bigger drives nonetheless have a tendency to hold a premium. Within the entry-level NVMe market phase, there’s overlap at 1TB between DRAMless TLC designs and QLC with DRAM designs, two markedly completely different methods for chopping prices. There are fortunately solely a handful of DRAMless QLC NVMe drives that mix each weaknesses. There are additionally a couple of comparatively budget-oriented TLC SSDs with DRAM that hit low worth factors utilizing cheaper 4-channel controllers.

Corsair MP400 1TB (QLC, Prime) and the Corsair Power MP510 (TLC, Backside)

Every of those approaches to an entry-level NVMe SSD (QLC+DRAM vs TLC with out DRAM) comes with its personal typical weaknesses, and a few benefits. DRAMless SSDs will endure underneath workloads with heavy random IO, however the place they do provide first rate efficiency they have a tendency to have superb energy effectivity – not having to energy any exterior DRAM chips helps. QLC SSDs endure most throughout sustained writes, and are very closely reliant on their SLC caches. Smaller drives have smaller SLC caches, so it will likely be a lot simpler to overflow that write cache on this 1TB MP400 than on the bigger variants. Most QLC and TLC drives have a tendency to make use of SLC caches, however QLC drives additionally have a tendency to make use of the most important SLC cache sizes doable, which exacerbates the efficiency issues as soon as the cache is full – there’s little or no empty flash left that could possibly be written to instantly as QLC, and till the drive can catch a break, additional writes would require compacting information from the SLC cache into QLC blocks to release area.

Most drives utilizing 4-channel controllers have notably restricted throughput. SK hynix was first to market with a 4-channel drive that would saturate PCIe 3 x4 (with TLC NAND), and that Gold P31 is priced extra like a high-end drive. Silicon Movement has launched a 4-channel Gen4 controller that can also be greater than quick sufficient for a Gen3 x4 interface, but it surely additionally is just not but low-cost sufficient for entry-level drives. So for now, the 8-channel Phison E12 controller is the most suitable choice for high-capacity QLC SSDs to enhance efficiency.

This evaluate has two details of comparability for our 1TB Corsair MP400 pattern: the 8TB Sabrent Rocket Q we just lately reviewed is probably the most related, and lets us see how this Phison E12+QLC design scales all the way down to smaller capacities. We even have outcomes for a number of different 1TB entry-level SSDs, together with DRAMless TLC fashions from Mushkin and Toshiba/Kioxia, and earlier QLC NVMe drives from Intel and Essential. Sadly, we have been unable to safe the Western Digital WD Blue SN550 in time for this evaluate; it typically appears to be the most effective DRAMless TLC drive available on the market, and would provide the hardest competitors in opposition to QLC designs at this 1TB capability level.

Learn on for extra evaluation.

AnandTech 2018 Shopper SSD Testbed
CPU Intel Xeon E3 1240 v5
Motherboard ASRock Fatal1ty E3V5 Efficiency Gaming/OC
Chipset Intel C232
Reminiscence 4x 8GB G.SKILL Ripjaws DDR4-2400 CL15
Graphics AMD Radeon HD 5450, 1920×1200@60Hz
Software program Home windows 10 x64, model 1709
Linux kernel model 4.14, fio model 3.6
Spectre/Meltdown microcode and OS patches present as of Might 2018

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