How much RAM does the ASRock Fatal1ty X99M Killer support?

The Fatal1ty X99M Killer supports up to 64GB of memory across 4 slot(s), up to 16GB per slot.

What type of memory does the Fatal1ty X99M Killer use?

It uses DDR4 UDIMM memory modules.

Compatible drive types: SATA 2.5" SSD, SATA M.2 2280 SSD.

Guaranteed-compatible DDR4 UDIMM upgrades for the ASRock Fatal1ty X99M Killer, in matched-kit options that fill your slots.

Verified compatible

Guaranteed-compatible SSD and hard-drive upgrades for the ASRock Fatal1ty X99M Killer — matched to its drive bays and slots.

This option is out of stock.

This option is out of stock.

This is a SATA (not NVMe) M.2 drive — confirm your M.2 slot supports SATA drives.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

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Guaranteed-compatible DDR4 UDIMM upgrades for the ASRock Fatal1ty X99M Killer, in matched-kit options that fill your slots.

Verified compatible

Guaranteed-compatible SSD and hard-drive upgrades for the ASRock Fatal1ty X99M Killer — matched to its drive bays and slots.

This option is out of stock.

This option is out of stock.

This is a SATA (not NVMe) M.2 drive — confirm your M.2 slot supports SATA drives.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

Good to know

Maximum capacity per slot is inferred from total capacity ÷ number of slots.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.