Wednesday, August 8th 2018
Intel Intros 660p Series M.2 NVMe SSDs with QLC NAND Flash
Intel Tuesday introduced the new SSD 660p series M.2 NVMe solid state drives. At the heart of these drives is the new 64-layer 3D QLC (quadruple level cell, or 4 bits per cell) NAND flash memory by IMFlash Technology (an Intel and Micron joint-venture). This memory is mated with a SIlicon Motion SMI 2263 controller. This chip is a derivative of the popular SMI2262EN, built on a newer process, with support for QLC NAND flash, compacted to have a smaller PCB footprint, and is driven by a custom firmware by Intel. The drives use over 10% of the QLC NAND flash area as SLC cache. The 660p series comes in three variants based on size - 512 GB, 1 TB, and 2 TB. The prices are the biggest dividend of QLC: the 512 GB variant goes for USD $99.99, the 1 TB variant at $199.99, and the 2 TB variant for $399.99.
Built in the M.2-2280 form-factor, the SSD 660p series drives feature PCI-Express 3.0 x4 interface. Intel's pricing puts these drives close to competing drives with PCIe x2 interface, but offering higher transfer rates thanks to the wider bus. It's also interesting to note here that the controller is cushioned by a DRAM cache (something PCIe x2 drives tend to lack, to keep costs down). Performance numbers differ by variant, and the 512 GB drive is the slowest, sequentially reading at speeds of up to 1500 MB/s, with up to 1000 MB/s sequential writes; up to 90,000 4K random reads, and up to 220,000 IOPS 4K random writes. The 1 TB and 2 TB variants both sequentially read and write at up to 1800 MB/s. The 1 TB variant offers 150,000 IOPS 4K random reads, and up to 220,000 IOPS random writes; while the 2 TB variant has 4K random reads/writes numbers of 220,000 IOPS.
Built in the M.2-2280 form-factor, the SSD 660p series drives feature PCI-Express 3.0 x4 interface. Intel's pricing puts these drives close to competing drives with PCIe x2 interface, but offering higher transfer rates thanks to the wider bus. It's also interesting to note here that the controller is cushioned by a DRAM cache (something PCIe x2 drives tend to lack, to keep costs down). Performance numbers differ by variant, and the 512 GB drive is the slowest, sequentially reading at speeds of up to 1500 MB/s, with up to 1000 MB/s sequential writes; up to 90,000 4K random reads, and up to 220,000 IOPS 4K random writes. The 1 TB and 2 TB variants both sequentially read and write at up to 1800 MB/s. The 1 TB variant offers 150,000 IOPS 4K random reads, and up to 220,000 IOPS random writes; while the 2 TB variant has 4K random reads/writes numbers of 220,000 IOPS.
7 Comments on Intel Intros 660p Series M.2 NVMe SSDs with QLC NAND Flash
Anandtech has an interesting graph in their review www.anandtech.com/show/13078/the-intel-ssd-660p-ssd-review-qlc-nand-arrives
It shows how much space Intel allocates as SLC cache based on empty space.
As such, drive performance will drop as you fill the drive up. Still faster than SATA, but just something to be aware of.
Well there goes the monthly budget. Have always wanted an M2 3x4 drive. Picked up the 512 just now. Even though it's not the fastest out their, for 99 dollars I could not pass it up.
They both cost 99 dollars. Write time is a tad slower then advertised. However read time is almost 200mb higher then advertised. Pretty good deal. Three time the read speed and twice the write speed. Approximately.