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September 9, 2022 05:07 pm GMT
Based on an article over at Tom's Hardware, we shouldn't expect too many drives that exceed 10 GB/s sequential writes at launch, due to most drives using 176-layer 3D NAND flash, that is limited to 1600 MT/s. As such, it might be wise to hold off on buying the first generation of PCIe 5.0 drives and wait for better availability of 232-layer 3D NAND, as beyond Micron, SK Hynix is expected to have a 238-layer 3D NAND flash in the market sometime in the first half of 2023. If you're not really eager to have the fastest SSD out there for pure bragging rights, it would seem that mid 2023 might be the right time to get a PCIe 5.0 SSD.
Original Link: https://www.techpowerup.com/298723/not-all-first-generation-pcie-5-0-ssds-will-offer-the-same-performance
Not All First Generation PCIe 5.0 SSDs Will Offer the Same Performance
The first batch of PCIe 5.0 SSDs are all likely to be based on Phison's PS5026-E26 controller, which offers eight NAND channels, capable of supporting NAND speeds of up to 2400 MT/s. Phison's own figures for the controller are 13 GB/s writes and 12 GB/s reads, with up to 1.5 million random read IOPS and 2 million random write IOPS. However, as we've already seen from various SSD brands, many PCIe 5.0 SSDs won't exceed 10 GB/s when it comes to the sequential read/write speeds. This is because the current NAND flash simply isn't fast enough to saturate the PCIe 5.0 bus, which is capable of 15.75 GB/s. That said, Micron's 232-layer 3D NAND should be able to boost the performance up to 12.4 GB/s based on the numbers Gigabyte announced for their Aorus Gen 10000 SSD.Based on an article over at Tom's Hardware, we shouldn't expect too many drives that exceed 10 GB/s sequential writes at launch, due to most drives using 176-layer 3D NAND flash, that is limited to 1600 MT/s. As such, it might be wise to hold off on buying the first generation of PCIe 5.0 drives and wait for better availability of 232-layer 3D NAND, as beyond Micron, SK Hynix is expected to have a 238-layer 3D NAND flash in the market sometime in the first half of 2023. If you're not really eager to have the fastest SSD out there for pure bragging rights, it would seem that mid 2023 might be the right time to get a PCIe 5.0 SSD.
Original Link: https://www.techpowerup.com/298723/not-all-first-generation-pcie-5-0-ssds-will-offer-the-same-performance
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