AMD’s Whole AI Story Has One Threat It Cannot Ignore: Broadcom

Alex Sirois

Mon, September 7, 2026 at 3:47 PM GMT+3 4 min read

Quick Read

AMD's data center revenue doubled to $7 billion, but Broadcom's AI semiconductor revenue hit $17 billion growing 221%, revealing a massive scale gap.
OpenAI, Anthropic, and Meta are AMD customers simultaneously co-developing custom accelerators with Broadcom, directly threatening AMD's addressable market at those accounts.
Broadcom's $14 billion free cash flow quarter and 15 consecutive dividend hikes give it structural staying power AMD's merchant GPU model cannot yet match.
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AMD (NASDAQ: AMD) and Broadcom (NASDAQ: AVGO) both just delivered blockbuster AI quarters, but the two chipmakers are chasing the same dollars from opposite ends. AMD is selling merchant Instinct GPUs and EPYC CPUs into any datacenter that will buy them. Broadcom is co-designing custom silicon inside a handful of hyperscalers. That contrast is why Broadcom poses a structural threat to AMD's general-purpose GPU story.

Justin Sullivan / Getty Images

Instinct Scales, but Broadcom's XPUs Land Harder

AMD's Q2 FY2026 revenue hit $11.54 billion, up 50.1% year over year, with Data Center at $6.72 billion and +107% growth. Lisa Su said "Data Center revenue more than doubled year-over-year" and now expects Data Center segment revenue to more than double again in 2027. That is real momentum, and Helios shipments start later in Q3 2026.

Broadcom's Q3 FY2026 was on a different scale. Revenue reached $29.59 billion, up 85.5% year over year, and AI semiconductor revenue alone was $16.70 billion, growing 221% YoY and 54% sequentially. Hock Tan guided Q4 AI revenue to $21.7 billion, up 236% YoY, and sketched a fiscal 2027 AI outlook near $115 billion with supply already secured. The Q3 operating margin of 67.9% is in a different weight class than AMD's 27% non-GAAP operating margin.

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Merchant GPU Bet vs. Custom Silicon Moat

Lens

AMD

Broadcom

Core AI Product

Instinct MI350/MI450, Helios racks

Custom XPUs, Tomahawk Ethernet

Anchor Customers

OpenAI, Meta, Anthropic, Microsoft

Google, Anthropic, OpenAI, Meta

Key Risk

Export controls, memory supply, ROCm ecosystem

Customer concentration, indebtedness

The uncomfortable overlap: three of AMD's marquee AI customers, OpenAI, Anthropic, and Meta, are also building custom accelerators with Broadcom. Tan argued that a co-developed XPU "will outperform any GPU" and can run at "half the cost of a GPU". If frontier labs shift training and inference to their own silicon, AMD's total addressable market at those accounts shrinks even as it ships MI450s.

2027 Ramp Is the Real Signal to Track

The near-term optics favor AMD. Shares are up 195.18% over one year and 135.63% over six months, while Broadcom has cooled, down 14.44% in the past month. I want to see whether Helios yields improve on schedule and whether AMD's $1.4 trillion 2030 AI accelerator TAM assumption holds once Broadcom is delivering multi-tens of billions of TPUs to Google annually.

Why I Would Own Broadcom for the Structural Story

Personally, I lean Broadcom here. The $13.66 billion free cash flow quarter, the 15th consecutive dividend increase, and a customer roster that is effectively pre-selling 2028 capacity give it a defensive quality AMD cannot match yet. AMD is the more exciting story, especially if you believe merchant GPUs win outside the top four labs, and Reddit's bullish sentiment scores of 72 and 74 reflect that enthusiasm. But if custom accelerators keep eating frontier workloads, Broadcom is the one collecting the toll. I would rather own the toll booth (we reverse-engineered what the biggest tech winners looked like early and put the traits into a free playbook you can grab here).

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