G.Skill has updated its popular Trident Z Neo memory to 4,000 MHz (effective) speed, placing it in the so-called "sweet spot" of AMD Ryzen 5000 processors. With any luck, we'll soon have memory, Infinity Fabric, and memory controllers running at an optimal 1:1 ratio.

AMD's new chips are out today and we've already had a good look at the Ryzen 9 5900X to see what it can do. It packs a punch in the game and is already sold out everywhere. Yeah, not so good.

At least you can prepare for this chip's triumphant return by buying everything else you need for your AMD gaming PC, including low-latency RAM G.Skill recently launched a variety of ranges of "ultra-low latency" memory featuring CL14 low timing and today we present a balance of speed and latency for AMD's new Zen 3 chip.

G.Skill's Trident Z Neo memory is available in DDR4-4000 CL16 configuration, offering the right blend of speed and latency for AMD Ryzen builds. G.Skill is rolling out 16GB and 32GB capacity kits; 64GB if you need it, CL18 to ensure lower latency.

All kits feature Samsung B-die chips.

AMD Zen 3 supports up to 4,000 MHz of memory at a 1:1 ratio. The last bit is the critical part. This ratio applies to the memory clock (mclk), memory controller clock (uclk), and infinity fabric clock (fclk), and it is best to run everything at an even beat. Therefore, it is desired to maintain a 1:1 ratio.

AMD uses Infinity Fabric as the communication bus between chiplets in AMD Ryzen Zen 2 and Zen 3 CPUs.

There is one drawback, however: not all of AMD's latest chips are running at the maximum speed of Infinity Fabric to achieve a perfect 1:1 ratio and may experience instability at 2,000 MHz fclk. Further AGESA updates may help optimize, but AMD does not guarantee this for all chips.

Also, memory speeds can be increased to 4,000 MHz or higher on Ryzen, but performance may suffer due to increased latency. For more information, see our detailed article on RAM speeds for gaming.

Once you have the memory, you will need a compatible AMD gaming motherboard; the B550 or X570 chipset is best, but you can wait until the 400 series BIOS update is released in January 2021.

Now you just need to get the chip. Good luck.