Synthetic Tests: Basic IO Patterns
Advanced Synthetic Tests: Block Sizes and Cache Size Effects
Mixed IO Performance and Idle Power Management
Is QLC Fine for Primetime?
Three years ago, a new variant of flash memory hit the SSD market which stores four bits of data in each memory cell called QLC. This new QLC NAND flash memory offered 33% better bit density compared to three bits per cell with mainstream TLC NAND. QLC initially arrived as a low-end alternative that provides better density and price, but the trade-off has been worse performance (and endurance). So far the use of QLC NAND has always meant that any drive with QLC belongs in an entry-level market segment, competing against the cheaper TLC NAND SSDs that cut corners on other components. But as more SSD vendors adopt QLC NAND in a wider range of products, some are starting to challenge the assumption that QLC is only for low-quality bargain products.
Synthetic Tests: Basic IO Patterns
Advanced Synthetic Tests: Block Sizes and Cache Size Effects
Mixed IO Performance and Idle Power Management
Conclusion
The new Samsung SSD 980 is the first retail-ready entry-level NVMe SSD from Samsung. Compared to previous SSDs from Samsung, it lacks any three-letter suffix at the end: it s not a PRO, nor an EVO, or even a QVO drive, because it doesn t fit into the established conventions for those product tiers. The SSD 980 slots into the product stacl at the bottom, but leaves a big enough gap for another, possibly better, model to come in later. Samsung is marketing the SSD 980 as a successor to the 970 EVO.
Samsung is adding another SSD to its extensive portfolio of storage solutions. The new SSD 980 is a PCIe 3.0, DRAM-less solid state drive available with up to 1TB of storage for the entry-level market.
Although these SSDs haven’t been officially announced yet, they are already available for pre-order at some European retailers, so we’ve already had a good look at the specs.
Available with 250GB, 500GB, and 1TB storage capacities, the NVMe M.2 SSD 980 will offer slightly less performance than the SSD 970 Evo Plus with reading speeds of up to 3500MB/s and writing speeds of up to 3000MB/s. 4K random read and write speeds are also slightly lower, featuring up to 500K IOPS while reading and 480K IOPS while writing. Given the rated MTBF of 1.5M hours and up to 600TBW of endurance, this drive seems to be TLC-based just like the SSD 980 Pro.
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