一句话总结
Per Cailian Press on the evening of October 28, Wells Fargo projects Google's Q3 TPU sales at about $9 billion, reaching $99 billion in 2027, while TD Cowen sees $9.4 billion in H2 2026 and $62.5 billion in 2027 — with external-sales operating margin around 20%. Google's in-house chip is turning from internal compute backbone into a measurable external business.
The strategic pivot: TPU from internal compute backbone to external revenue line
This is a follow-up piece: new developments since our earlier coverage are that, on the evening of October 28, Cailian Press disclosed revenue forecasts and margin calculations for Google's external TPU sales. This piece does not revisit partnership-term details and focuses on the newly disclosed commercial math.
Per Cailian Press on October 28, Alphabet announced locally on October 27 a partnership with Oracle under which OCI becomes the first hyperscaler outside Google to offer TPU, with the related compute capacity expected to deploy from 2027. The business-model significance is this: TPU used to be the internal compute backbone powering Google Search, Gemini and Cloud. It is now explicitly positioned as an external revenue line — distributed through a third-party hyperscaler.
CFO Ashkenazi's remarks on the July Q2 earnings call are the baseline for reading the new forecasts. Per Cailian Press's citation of that call, Ashkenazi said only a small portion of existing TPU system sales agreement revenue will be recognized in 2026, with the vast majority expected in 2027. In other words, the 2026 reported external-sales figure is only an appetizer; the real ramp lands in 2027 — which matches the step-up structure in the analysts' 2027 projections.
The revenue forecast gap: from ~$9B a quarter to $99B in 2027
The newly disclosed projections diverge meaningfully and must be read bank by bank. Per Cailian Press citing Wells Fargo, Google's Q3 TPU sales were about $9 billion, and will reach $99 billion in 2027 — the most aggressive estimate in this batch.
A second institution lands clearly lower. Per Cailian Press citing TD Cowen, Google's H2 2026 TPU sales are projected at $9.4 billion, growing to $62.5 billion in 2027. On the same business line, the two banks' 2027 estimates differ by roughly $36.5 billion — a gap of nearly 60%.
Set against Alphabet's own disclosed recognition cadence — only a small slice of agreement revenue in 2026, the vast majority in 2027 — the Wells Fargo path from about $9 billion a quarter to $99 billion in 2027 embeds a double assumption: concentrated recognition of external agreements in 2027 plus a continuously expanding order book. TD Cowen's $62.5 billion leans toward a more conservative recognition schedule. The disagreement is not about whether TPUs sell well, but about two variables — revenue-recognition pace and new-order signing speed — neither of which official guidance can yet falsify.
The margin math: ~20% external-sales operating margin vs. Cloud's 35.6%
Beyond scale, the sharper question is whether this business makes money. Per Cailian Press citing TD Cowen, the TPU external-sales business carries an operating margin of about 20%, well below Google Cloud's actual Q2 2026 operating margin of 35.6%.
The gap is structural. External TPU sales are hardware-plus-systems sales, whose gross-margin structure is naturally lower than software-and-services-heavy cloud; and distribution through third parties like OCI cedes channel value on top. In short, external TPU sales trade margin for scale and ecosystem coverage.
The other side of the ledger comes from SemiAnalysis. Per Cailian Press, SemiAnalysis calculates that the total cost of ownership of Google's Ironwood TPU is about 44% lower than Nvidia's GB200 servers; Google Cloud's Kurian says the payback period for custom-chip servers is about half that of generic AI servers. A roughly 40% cost advantage and halved payback period are exactly why Google can afford to trade scale at a ~20% external-sales margin — the hardware economics are good enough that margin concession still leaves the business profitable.
Ecosystem anchoring: Anthropic's million-TPU deal and nearly 1GW of new compute
The external business's order book rests on already-signed mega-deals. Per Cailian Press, Anthropic signed an agreement worth tens of billions of dollars last October to use up to 1 million Google TPUs; Mizuho says the deal brings Google nearly 1GW of new compute demand this year.
Set the order base against the revenue forecasts and the projections look grounded rather than speculative: million-chip-scale long-cycle agreements, paired with revenue recognition concentrated from 2027, underpin both the Wells Fargo $99 billion and TD Cowen $62.5 billion estimates. The difference lies only in each bank's assumption about subsequent new-order signing speed.
Taken together, Google's external TPU sales have completed the qualitative shift from internal asset to external business: demand is anchored by Anthropic's million-chip agreement, delivery has its first outside hyperscale channel in OCI, and economics are backed by the Ironwood TCO calculation of roughly 44% below GB200. The remaining variable is the actual slope of 2027 revenue recognition — to be validated quarter by quarter through the cloud segment's TPU revenue disclosures.