Storage · high

How to fixSSD-DRAM-CACHE-FAIL

SSD DRAM cache failure

What this error means

SSD DRAM cache failure ranks as a high-severity storage drive (SSD/HDD) issue in our database. An SSD without a DRAM cache (DRAM-less) is extremely slow when writing large files or reading small files. It's also often linked to defragmenter running on SSD instead of TRIM. Work through the steps below in order.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Don't use defrag on SSD (TRIM only)

Don't use defrag on SSD (TRIM only).

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Upgrade to SSD with DRAM cache (Samsung 990 Pro, WD SN850X)

Upgrade to SSD with DRAM cache (Samsung 990 Pro, WD SN850X).

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Leave at least 10-15% free space

Leave at least 10-15% free space.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Cheap DRAM-less NVMe (QLC NAND without cache)
  • Filled SLC cache layer
  • Defragmenter running on SSD instead of TRIM