AMD Ryzen - high frequency RAM compatibility

The release of AMD Ryzen processors has revived CPU market once again after a decade of stagnation. The reviews have proven that RAM speed has huge impact on Ryzen's performance.

Ryzen CPUs have some compatibility issues with high speed DDR4 sticks. Officialy the CPUs support DDR4-2666 in dual channel mode with single memory stick per channel or DDR4-2400 in dual channel configuration with two memory sticks per channel. Memory compatibility has improved after multiple BIOS updates, but DDR4-3600 or above is still not reachable. During the last couple of months I had a chance to build multiple AMD Ryzen 7 and Ryzen 5 systems with different motherboards and RAM configurations. Here are the CPU/RAM/motherboard configurations which work stable for me.

CPU Motherboard RAM RAM sticks RAM capacity RAM speed
Ryzen 7 1700x MSI X370 GAMING PRO CARBON¹ G.Skill Flare X AMD Series 16GB 3200MHz 4 32gb 2933Mhz CL14
Ryzen 7 1700x MSI X370 GAMING PRO CARBON¹ G.Skill Flare X AMD Series 16GB 3200MHz 2 16gb 3200Mhz CL14
Ryzen 7 1700x MSI X370 GAMING PRO CARBON¹ G.Skill Flare X AMD Series 16GB 3200MHz 2 16gb 3333Mhz CL16
Ryzen 7 1700x MSI X370 GAMING PRO CARBON¹ Corsair Vengeance LPX DDR4-3000 CMK32GX4M2B3000C15W 4 64gb 2800Mhz CL16
Ryzen 7 1800x MSI X370 SLI PLUS¹ Corsair Vengeance LPX DDR4-3000 CMK32GX4M2B3000C15 2 32gb 2933Mhz CL16
Ryzen 7 1700x MSI B350 TOMAHAWK Corsair Vengeance LPX DDR4-2400 CMK32GX4M2Z2400C16 2 32gb 2400Mhz CL16
Ryzen 5 1600 MSI B350 PC Mate Corsair Vengeance LPX DDR4-3000 CMK16GX4M2B3000C15 2 16gb 2933Mhz CL16
Ryzen 7 1700 ASUS TUF B350M-PLUS GAMING² Corsair Vengeance LPX DDR4-3000 CMK32GX4M2B3000C15 2 32gb 2666Mhz CL15

¹ - MSI X370 SLI PLUS and MSI X370 GAMING PRO CARBON

  • The Memory Try It! function works good. If system fails to boot within 5 tries it will boot using default settings.
  • Failed boot with Memory Try It! reverts CPU overclocking, but does not reflect it in BIOS. BIOS still indicates the original overclocked CPU speed, while CPU runs at stock frequency. In order to apply overclocking you have to adjust CPU settings, save and reboot.
  • CPU overclocking and Memory Try It! sets a crazy high speed fan profile. When overclocking is done, and system is stable, it's required to go into the BIOS and reset the fan profile to it's defaults.

² - ASUS TUF B350M-PLUS GAMING

  • Two Ryzen 7 1700 + TUF-B350 combos easily reached 3.8Ghz at 1.3 volts with stock cooler.
  • One of the combos stack at 1.5Ghz CPU speed when going over 1.3 volts in BIOS. Works with AMD Ryzen master.
  • Both system boot with DDR4-2933Mhz CL16 RAM, but it was not stable out of the box, and I didn't have time to find stable settings.
  • Overall BIOS from Asus feels better than MSI's. It does not have fan issues, but it lacks the Memory Try It! feature. The memory compatibility is also worse when compared to MSI.

I will keep updating this table when building new systems or checking up new configurations. Let me know if you want me to test some specific configuration.

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