DDR5 6400 CL32 is recommended for 13900K.

Here are some good suggestions for 13900K:

1. Corsair Dominator Titanium RGB DDR5 32GB:

   • Memory Type: DDR5
   • Capacity: 32GB (2x 16GB)
   • Frequency: 7,200MHz
   • Latency: CL34 (9.4ns)
   • RGB: Yes
   • Voltage: 1.45V
   • Pros: Outstanding frequency, beautiful aesthetics, stylish heat spreader, impressive performance.
   • Cons: Price, limited overclocking headroom, compatibility issues.
   • This RAM kit delivers fast and efficient performance, making it an excellent choice for professionals and gamers working with the i9-13900K CPU.

2. G.Skill Trident Z5 RGB DDR5 32GB:

   • Memory Type: DDR5
   • Capacity: 32GB (2x 16GB)
   • Frequency: 6,000MHz
   • Latency: CL36 (12ns)
   • This RAM stands out as a superb option for users who want to pair it with the i9-13900K CPU and have the ability to overclock to higher speeds.

3. TEAMGROUP T-Force Xtreem DDR5 32GB:

   • Memory Type: DDR5
   • Capacity: 32GB (2x 16GB)
   • Frequency: Varies
   • Latency: Varies
   • This high-performance RAM offers stability and reliability for demanding tasks.

4. Corsair Vengeance RGB 32GB (White):

   • Memory Type: DDR5
   • Capacity: 32GB (2x 16GB)
   • Frequency: Varies
   • Latency: Varies

G.Skill Trident Z5 RGB is a great ddr5 RAM for 13900K.

I use Corsair DDR5 for my 13700K, recommended.

Corsair Dominator Titanium RGB DDR5.

The new announced G.Skill Trident Z5 Royal series is a good choice.