SK hynix appears to be expanding its DDR5 lineup with several new chips rated for a native 7200 MT/s speed above the current JEDEC 6400 MT/s standard. Listings spotted by @unikoshardware on Chinese retailer JD.com show new SK hynix DDR5 modules using part numbers not yet seen in the market. According to the findings, SK hynix has prepared four new dies, all capable of 7200 MT/s (denoted by the "KB" suffix), with densities ranging from 2 GB to 4 GB. These include the company's first 2 GB B-die and a 4 GB M-die, marking the first time this process node has been offered at that capacity.

Just last week, we reported on the second generation of SK hynix DDR5 memory chips with 3 GB A-die ICs where the sample reportedly uses an 8-layer PCB. As noted before, to fully exploit the new die's potential, manufacturers are expected to move to 10 or 12-layer PCBs for greater signal integrity, something that would come in handy especially when overclocked. These listings likely represent early samples, with improved designs expected once production ramps up. SK hynix hasn't officially announced the new chips yet, but the listings suggest development is well underway.