SanDisk Corporation Announces Series SSDs SanDisk X300. New products will be presented by models in three form factors (SATA 2.5 ", mSATA and M.2 2280) and volumes ranging from 128 GB to 1 TB.
The principal difference between the newcomers from SanDisk X300s, presented in May, is that they are based on TLC NAND memory, which offer less resources.
SanDisk again restricts itself to the use of the abbreviation "TLC", preferring the expression "X3, three bit-per-cell technology, to deliver a highly optimized and reliable solution for both CIOs and their employees". While the documentation used type of flash memory specified explicitly: 1Ynm TLC flash technolog (the acronym "1Ynm" hiding or 19-nm or 15-nm process technology).
SanDisk would not give up its proprietary algorithm, the controller - nCache 2.0: data written to the drive is pre-grouped in the spare area, where they are recording the controller gently, simulating SLC NAND (data is written to one bit per cell instead of three - it requires minimal voltage for recording) and a large grouped unit is transferred to the main array of flash memory. This approach allows to give higher speed characteristics for building block random write operations and resource saving
flash memory, which means the use of TLC NAND becomes especially important.
In general performance characteristics of the newcomers are:
|
128 GB< |
256 GB< |
512 GB< |
1TB< |
Form Factor |
2,5 "SATA M.2 mSATA |
2,5 "SATA M.2 mSATA |
2,5 "SATA M.2 mSATA |
2,5 "SATA M.2 mSATA |
Sequential read speed |
520 MB / s |
520 MB / s |
520 MB / s |
520 MB / s |
Sequential write speed |
415 MB / s |
470 MB / s |
470 MB / s |
460 MB / s |
Reading random blocks (4KB) |
73 000 IOPS |
91 000 IOPS |
94,000 IOPS |
98,000 IOPS |
Added random blocks (4KB) |
40,000 IOPS |
57,000 IOPS |
70,000 IOPS |
67 000 IOPS |
Warranty resource records, TB |
72 |
80 |
80 |
80 |
Please note: The performance characteristics of the models in the performance of M.2 do not differ the form factor 2.5 "SATA and mSATA. Reason for this is that in M.2 uses the same controller Marvell 88SS9188 and architecturally they are SATA-devices, not PCIe .
Sales drives SanDisk X300 should begin this month. Related Products :
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