AMD ramps HBM4-based Helios rack production as memory supply stays tight, report says
In brief
- Helios mass production began in July 2026, according to Crypto Briefing.
- Helios racks hold 72 Instinct MI455X accelerators with 432 GB of HBM4 apiece.
- Q4 2026 is expected to bring significant volume increases, the outlet reported.
- HBM4 capacity is reportedly sold out through 2029; Samsung aims to double output in 2027.
What's inside a Helios rack
Each Helios rack packs 72 Instinct MI455X accelerators, according to Crypto Briefing, and every one of those chips carries 432 GB of HBM4. By the outlet's math, that's 31,104 GB of HBM4 in a single rack.
It's a lot of memory per box.
The report said volume shipments are expected to serve major customers including OpenAI, Anthropic and Microsoft. Crypto Briefing also reported that interest in Helios has far exceeded AMD's initial forecasts for 2027, and that AMD plans substantial production increases over the next three to five years.
Samsung and the HBM4 bottleneck
Samsung began HBM4 mass production in February 2026, the outlet said. A month later, in March, the two companies signed a memorandum of understanding naming Samsung as AMD's preferred HBM4 supplier, and shipments are in progress, according to the report. As of early October 2026, AMD CEO Lisa Su was in Seoul discussing additional HBM4 supply with Samsung executives, Crypto Briefing reported.
Supply isn't keeping up. HBM4 yields are rising at both Samsung and SK Hynix, but the outlet said supply constraints remain a major hurdle, and AMD has pointed to tight availability of components including HBM and advanced packaging. HBM4 production capacity is reportedly sold out through 2029. Samsung aims to double its output in 2027.
Why it matters for AMD vs. Nvidia
Crypto Briefing framed Helios (a full-rack system) as AMD's bid to compete with Nvidia at the level hyperscalers buy. On the outlet's reading, demand doesn't look like the problem, since interest has already outrun AMD's own 2027 forecasts.
Memory is the constraint, in the outlet's view.
Crypto Briefing said how fast AMD can scale shipments past Q4 depends on how much HBM4 Samsung and SK Hynix can actually deliver, and the report doesn't put a number on how many Helios racks AMD expects to ship.
Frequently asked questions
How much HBM4 memory is in an AMD Helios rack?
According to Crypto Briefing, each Helios rack contains 72 Instinct MI455X accelerators, and each chip carries 432 GB of HBM4. By the outlet's calculation, that comes to 31,104 GB of HBM4 in a single rack.
When does AMD ship Helios systems?
Crypto Briefing reported that Helios mass production began in July 2026. Initial shipments were scheduled for the end of Q3 2026, and significant volume increases are expected in Q4 2026.
Why is HBM4 supply a constraint for AMD?
Crypto Briefing reported that HBM4 yields are rising at Samsung and SK Hynix, but supply constraints remain a major hurdle. AMD has pointed to tight availability of HBM and advanced packaging, and HBM4 capacity is reportedly sold out through 2029.
