Samsung HBM4 36GB

MakerMemory manufacturer.

Samsung1

GenerationMaker’s HBM generation designation.

HBM41

DRAM layers highDRAM dies in the stack; excludes the base die.

121

Stack capacity GBCapacity of one stack, in the maker’s GB units; not accelerator total memory.

361

Pin rate Gb/sPublished pin rate. Read with Pin qualifier; a limit is not a guaranteed operating point.

11.71

Stack bandwidth GB/sPublished bandwidth of one stack. Read with Bandwidth qualifier. TB/s is normalized to GB/s using 1,000.

Up to 3,3001

Interface bitsData I/O width of one stack; not the complete accelerator bus.

2,0481

Base diePublished base/buffer die implementation or foundry. Null means not disclosed in the cited evidence.

Samsung Foundry 4nm logic1

DRAM processVendor’s process label, not a normalized physical dimension.

1c (6th-generation 10nm-class)1

Bonding / packagePublished stacking or package process.

Not published

Evidence statusLast supported milestone; historical production does not imply current orderability.

Production reported1

Status evidence dateDate of the supporting publication, with original precision (YYYY, YYYY-MM or YYYY-MM-DD). Not necessarily the first shipment day.

2026-02-121

Sample evidence datePublication confirming samples, preserving date precision; not an inferred qualification date.

Not published

Production evidence datePublication confirming production or shipments. A report date, not an exact factory ramp date.

2026-02-121

Confirmed platform linksPlatforms explicitly linked to this maker and variant by a first-party source. Design-in is distinguished from shipping.

AMD Instinct MI455X (primary HBM4 supply agreed, Mar 2026)2

Reading notesVariant-specific context, source conflicts, historical status and unconfirmed details.

The release describes 24–36GB through 12-layer stacking. Stable rate is 11.7 Gb/s, headroom up to 13 Gb/s; 3.3 TB/s is the maximum stack bandwidth, not the bandwidth at 11.7 Gb/s.1

1. Samsung: Samsung HBM4 36GB accessed 2026-11-11
2. Samsung and AMD: primary HBM4 supply for MI455X accessed 2026-11-11

Every date is the publication date of the maker’s evidence. See who packages, bonds and tests Samsung HBM on HBM Suppliers. Read the method or send a correction.