Discussing the details goes beyond just the storage capacity.
Discussing the details goes beyond just the storage capacity.
The Intel 12900KS only backs DDR5 speeds up to 4800MHz, but you can still use 6400MHz RAM because it supports higher speeds than the minimum required.
This indicates they're officially approved for operation at up to 4800MHz. Frequencies beyond that aren't guaranteed by the maker, though that doesn't necessarily mean they won't work. It's worth noting that DDR5-4800 also aligns with the lowest JEDEC standard for that frequency.
Overclocking allows the memory controller to operate at any desired frequency, though Intel and most board manufacturers only support up to 4800MT/s. With sufficient voltage and an optimal memory layout, speeds can reach 6400MT/s.
Spec indicates the maximum guaranteed performance it will achieve. Generally, higher speeds are possible depending on your RAM, CPU, and motherboard. I recommend skipping DDR5 ATM as it’s expensive and offers minimal advantage over DDR4 at this stage. For future options, you might consider high-end DDR5 modules from sources like Hyundai Bare PCBs on eBay (~100$ for 16GB), which could support speeds above 7000 depending on the chipset. You can specify the required IC if needed, but I haven’t found any suitable burners for top-tier DDR5 kits yet.