Thursday, October 30th 2025
SK hynix Prepares 7200 MT/s DDR5 Chips with New 2 GB B-Die and 4 GB M-Die
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.
Part number | Die | Speed | Density
Sources:
Wccftech, @unikoshardware
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.
- H5CGD8AKBD-X021 | A-die | 7200 MT/s | 3 Gb
- H5CC48BKBD-X030 | B-die | 7200 MT/s | 2 Gb
- H5CG48CKBD-X030 | C-die | 7200 MT/s | 2 Gb
- H5CG58MKBD-X051 | M-die | 7200 MT/s | 4 Gb
5 Comments on SK hynix Prepares 7200 MT/s DDR5 Chips with New 2 GB B-Die and 4 GB M-Die
B-die isn't even the newest stuff btw, they've been showcasing C-die (on a newer node), incl. under the Essencore branding. Third party UDIMMs have been caight with it too, if I'm not mistaken. You have it listed in the article without further comment.
I've got all the press release links and pics (and Goofish/Ebay listing photos) saved, just never "whistleblew" about it on X or to tech news venues under the assumption nobody cared. Plus obviously, more and more people tend to pick things up sooner or later.