[Bad_Initialism]

You can improve the effectiveness and professionalism of your communication by spelling out initialisms the first time you use them, like this: high-bandwidth memory (HBM).

After you have spelled it out, feel free to use the initialism as much as you like for brevity.

[westurner]

You can look up acronyms that are contextually indicated; in this case by the word "DDR5".

HN only supports a limited number of characters in headlines.

Searching for `hbm ddr5`, for example, appears to find the definition of the acronym. Adding the word `Wikipedia` finds an article about same.

IIUC Silicon Carbide (SiC) wafers are an alternative to doped Silicon Dioxide (SiO_2) wafers, but EV chargers are built out of 6x6 SiC wafers and they're very expensive.

To move semiconductor fabrication off of scarce highly-processed commodity inputs would help to eliminate current production bottlenecks.

[kristianp]

This was above the article text: "High-Bandwidth Memory (HBM) Roadmap" under the heading Toms Hardware Premium Roadmaps. It's also spelled out in the 2nd paragraph of the article.