Phison Confirms PCIe Gen 5 Ready SSDs Will Be Hot

Phison recently confirmed in a blog post that PCIe Gen 5 SSDs will run hotter than their predecessors and require active cooling.

Last year, the manufacturer already revealed many details about PCIe Gen 5 SSDs, predicting that the first models will go on sale by the end of this year. PCIe Gen 5 SSDs will be able to provide data transfer rates up to 14 GB/s. With DDR4-2133 memory also delivering around 14 GB/s per channel, storage and DRAM can now work in the same space, plus there is a real prospect of L4 caching. Recall that now processors have L1, L2 and L3 caches. According to Phison, Gen 5 and above SSDs will be able to act as L4 cache for processors.

Phison Confirms PCIe Gen 5 Ready SSDs Will Be Hot

To reduce power consumption and heat dissipation, the new controllers will be switched from 16 nm standards to 7 nm standards. Another way to reduce heat generation is to reduce the number of NAND channels. Phison believes that from a practical point of view, it is not necessary to have eight channels to saturate PCIe Gen5 – four is enough and this can reduce the power consumed by an SSD by 20-30%.

In terms of temperatures, NAND memory typically operates at temperatures up to 70-85°C. For the PCIe Gen 5 controller, Phison set a limit of up to 125°C. If the memory temperature exceeds 80°C, the SSD will perform an emergency shutdown. However, too low a temperature is also bad. The optimal range is 25-50°C. According to the manufacturer, in order to keep the temperature of a PCIe Gen 5-enabled drive within acceptable limits, active cooling will be almost mandatory.

Source: ixbt

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