Best 64 or 128GB kit for a GIGABYTE X570 AORUS Xtreme with a 5950x

[Tanquen]

Looking for the best 64 or 128GB kit for a new GIGABYTE X570 AORUS Xtreme, AMD 5950x build.

G.SKILL Ripjaws V Series 128GB (4 x 32GB) F4-4000C18Q-128GVK

Would they work and run at 4000MHz?

Are the G.SKILL TridentZ RGB (F4-4000C18Q-128GTZR) and G.SKILL Trident Z Royal Series (F4-4000C18Q-128GTRS) the same just with RGB?

[GSKILL TECH]

Official QVL is not yet available for the specific combination, especially for DDR4-4000. That memory kit should be able to work but may need a BIOS update before fully capable of DDR4-4000, and assuming the CPU is capable with 128GB.

The other two memory models mentioned are same, just RGB variations.

[Tanquen]

Any idea when the QVL will be updated?

What chip are used in the F4-4000C18Q-128GVK kit?

[Tanquen]

Any idea when the QVL will be updated?

What chip are used in the F4-4000C18Q-128GVK kit?

I tried these and when I put one stick in it defaults to the 1333 MHz and ignores the XMP profile.

When I put two sticks in it runs at 2,000 megahertz using the XMP profile but it sets the Infinity fabric at 1800. I can set the memory to match and it seems to be a little faster.

When I put all four sticks in it again ignores the XMP profile and runs the memory and fabric clock at 1333 megahertz.

With 2 sticks I can set the get the RAM and FCLK at 1900 but the game benchmark I'm running had a lower score than with both at 1800. ???

[GSKILL TECH]

Are you using the latest BIOS? Sounds like the CPU internal memory controller is overloaded with full slots at DDR4-4000 so you will need to try a lower value to see what can be supported. FCLK and DRAM Frequency should always be same for optimal performance. To push beyond CPUs native capability, you can try adjusting CPU SoC and VDDG Voltage to see if you can force stability at higher frequencies.

Here is a guide that may be helpful:

https://www.tweaktown.com/guides/922...ide/index.html