Not supported by DDR4 CL16 for 2x16GB at 3600Mhz on a Z690.
Not supported by DDR4 CL16 for 2x16GB at 3600Mhz on a Z690.
I'm working on assembling a new Alderlake/Z690 PC. I've checked the memory compatibility lists for my ASUS TUF GAMING Z690-PLUS WIFI D4 and it seems the CL16 3600Mhz isn't listed. I've also looked at other DDR4 Z690 builds and the same issue appears. I'm leaning toward Corsair Vegence LPX, which I've already purchased the 2x16GB 3600Mhz CL16 kit for. Only a 2x16GB 3600Mhz CL18 kit is shown as compatible.
1. Could it be that the system faces problems or isn't supported, or did the manufacturers not test this kit?
2. Will there be significant differences between CL16 and CL18 3600 speeds, or should I consider a higher-performance option?
Describe your overall configuration and the scenario you're testing. The differences in performance will be minimal under normal conditions. Typically, more cores pair well with quicker RAM, making a 3600 CL18 a solid choice, though it shouldn’t be the only factor in your decision. Latency remains the same for both options.
CPU model: i7-12700k
Motherboard: ASUS TUF GAMING Z690-PLUS
GPU: GTX 3080Ti
Power Supply: Corsair RM850x
Storage: Samsung 980 PRO 1TB
Cooler: Noctua nh-d15
Used primarily for gaming and video editing in Premiere. Previously owned Corsair 2x16GB 3600Mhz CL16 (CMK32GX4M2D3600C16) before checking compatibility. The nearest compatible option on the list is Corsair LPX 2x16GB 3600 CL18 (CMK32GX4M2D3600C18).
Recent benchmarks show only a slight impact on FPS—around 1%-3%—and the performance is more about stability than speed. Compatibility concerns are growing, especially for Z690 and Alder Lake systems. It’s unclear what to do; consider testing with CL18 timings or returning for CL18 units, which are slightly cheaper. There’s also uncertainty about potential issues with the Z690/Alder Lake configurations.
This setup is quite solid. I’d aim to maximize the RAM performance, since a 3600 CL16 can deliver real advantages over the 3600 CL18 given your GPU’s strength. I’m not familiar with much memory options for the Z690 yet, but if it matches the trends of Rocket Lake or Comet Lake, compatibility should be smooth. Recently, Intel has emphasized memory improvements, and both Gamers Nexus and Hardware Unboxed have mentioned upcoming scaling videos, so we’ll likely see more details soon. If you’re considering it, testing the memory would be a good move—you can always return it if needed. Alternatively, tweaking the timings could help push speeds further if you choose that path.
Thanks in advance! I hope everything comes together next week. Probably just needs a quick check, fingers crossed it goes well.