Problems after installing more RAM on your PC
Problems after installing more RAM on your PC
Hello everyone! I'm facing some problems when running my RAM at high speeds after the upgrade. My current specs are: 16GB MSI MPG Z690 CARBON WIFI, Intel i9 12900K CPU, 750W PSU, and 2x16 Kingston KF560C40BBK2 sticks before the upgrade. I updated my BIOS to the latest version from August 2024. Edit: I didn't mention that I'm using Linux Manjaro, which might be relevant. The base clock is 4800 MT/s, and it works fine at 6000 MT/s in XMP mode. I bought a 2x32 kit (KF560C40BBK2) to fill the two empty slots. When all four sticks are installed, the RAM caps at 4000 MT/s, which is below its base speed even with XMP. Using just two sticks from different pairs (16+32) brings it back to base speed but with better timings. I can't find any instructions in the manual about supporting all four slots properly. It seems the issue might be because I'm using two separate kits instead of one, and they're assembled in different locations (China and Taiwan). Should I try overclocking manually as an unskilled overclocker? If I order another 2x32 kit from the same place, will it match the existing one? What should I do next?
The issue involves using four DDR5 DIMMs, which can be quite sensitive and often have trouble maintaining high speeds. It's surprising they even start up with this configuration, let alone reach 6000MT/s. The setup also features a triple-rank memory arrangement. Generally, more ranks improve performance per clock, though gains slow down. Typically, 16GB modules are single-rank, while 32GB sticks remain dual-rank. Putting both single and dual ranks on each channel gives a triple-rank configuration for the controller. On the latest generation, dual-rank sticks usually cap around 6000MT/s, with some models hitting slightly higher or lower. Triple-rank sticks tend to perform better than dual-rank, especially for top speeds, but rarely exceed 4400-4800MT/s. That would likely be close to the upper limit, which is often unattainable without extensive adjustments. This outcome would probably lead to quad-rank mode, but achieving speeds above 4400MT/s is usually not feasible. It all hinges on how much RAM you actually require. If you need 64GB, stick with the current build. For a 96GB requirement, consider upgrading to a compatible 2x48GB module—preferably a 6000CL30 or 6400CL32 variant for better compatibility and significantly improved performance compared to older models like the 5600CL40 or 6000CL36-44-44.
I'm setting up a Windows VM and noticed my machine had issues with 32 gigabytes of storage, especially when handling tasks on both the host and the VM simultaneously. I'm planning to upgrade to 96 gigabytes, though I think 64 would also work well.
Intel's information matches the same page, though slightly less visible. On a 2DPC board, there are 4400 slots for two DIMMs, 4000 for two single-rank DIMMs, and 3600 for two dual-rank DIMMs. The rated 4800 applies only to 1DPC boards.
i believed no one tested cursed tri rank, but could there be a chance of mix match? From what i know, the 5600c40 is just a mediocre samsung chip, and lower models are even worse. Microns under 6000 with low CL 6000+ seem to be mostly hynix dies, as it looks like no one has really focused on ddr5 for 16gbit yet.