> ## Content Index > Fetch the complete content index at: https://www.sotkn.com/llms.txt > Use this file to discover other available public pages before exploring further. # NVIDIA pays $1.1bn for US test as Amkor deals hit $3bn - URL: https://www.sotkn.com/wire/nvidia-1-1bn-kyec-amkor-3bn-substrate-capacity-wire/ - Published: 2026-10-21T23:46:46.000Z - Updated: 2026-10-21T23:46:46.000Z - Description: NVIDIA said at GTC Berlin that it is booking substrate, packaging, test and co-packaged-optics capacity with six suppliers. The named cash is a $1.1 billion KYEC advance and Amkor agreements that now total $3 billion. - Author: Sean - Tags: #desk-wire `WIRE` · `SEMICONDUCTORS` · `PACKAGING` · Data as at 21 Oct 2026 NVIDIA said on **21 October 2026**, at GTC Berlin, that it is booking substrate, packaging, test and co-packaged-optics capacity with six suppliers. The cash it numbered is a **$1.1 billion** advance to King Yuan Electronics for US test plants, and a **$1.3 billion** Amkor Korea agreement that takes their Arizona-plus-Korea book to **$3 billion**. Jensen Huang: “Demand is extraordinary. Capacity is the constraint.” On the [Semiconductors](https://www.sotkn.com/stack/semiconductors/) layer he is paying for the board, the interposer, the tester and the optical engine — not a foundry wafer. ## What happened | Print | Figure | Source / date | | --------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------- | | Substrate capacity for NVIDIA products | 2.5× over the next three years, in aggregate, via IBIDEN, Samsung Electro-Mechanics and Unimicron | NVIDIA, 21 Oct 2026 | | IBIDEN Ono Plant, Japan | Multibillion-dollar capacity-reservation advance; plant to 3×; added capacity ramps Q1 2028 | NVIDIA, 21 Oct 2026 (agreement “signed and announced earlier this year” by IBIDEN) | | Samsung Electro-Mechanics ABF substrates | Joins the chain with existing Korean capacity; dedicated Sejong and Busan lines; deliveries from 2026; NVIDIA a “significant portion” of annual substrate output by 2028 | SEMCO, 21 Oct 2026; NVIDIA, same day | | Unimicron KF substrates, Taiwan | Capacity-reservation agreement; adds from Q2 2027; full capacity mid-2028 | NVIDIA, 21 Oct 2026 | | Amkor interposer wafers, South Korea | \>300% by end-2028 | NVIDIA, 21 Oct 2026 | | Amkor–NVIDIA cash book | $1.3bn Korea; Arizona + Korea $3bn. July US print was a $1.5bn prepayment | Amkor, 21 Oct 2026; Amkor, 23 Jul 2026 | | KYEC US test | $1.1 billion capacity-reservation advance; high-volume production targeted April 2027 | NVIDIA, 21 Oct 2026 | | NVIDIA test capacity | Double from calendar 2026 to 2027 (US, Taiwan and a third site); that third site high-volume February 2027 | NVIDIA, 21 Oct 2026 | | SPIL optical engines for co-packaged optics, Taiwan | 15× by mid-2027, then another doubling by end-2028 | NVIDIA, 21 Oct 2026 | Samsung Electro-Mechanics is the same-day primary that fills in NVIDIA’s “joining.” SEMCO said the two will jointly invest in dedicated ABF lines at Sejong and Busan, supply starts in 2026, the parts cover compute chipsets and high-speed networking switches, and volumes to NVIDIA should rise at a double-digit annual rate. NVIDIA still puts no dollar figure on SEMCO or Unimicron. IBIDEN’s advance is “multibillion,” not a print. Amkor’s own release is the other numbered cheque. A **$1.3 billion** agreement “supports further expansion in South Korea,” and the multi-year NVIDIA agreements in Arizona and South Korea now “total $3 billion.” On **23 July** Amkor said NVIDIA would prepay under a **$1.5 billion** US advanced-packaging agreement, including Arizona. Our arithmetic: 1.5 + 1.3 = **2.8**. The company totals Arizona plus Korea at **$3 billion**. The **$0.2 billion** in between is not itemised. ## Why cash cares A capacity-reservation advance is cash that leaves NVIDIA before a package ships. KYEC’s Taiwan filing on **13 October** is the mechanism in writing. KYEC and its US subsidiary AeternZ Semiconductor Testing Corporation signed a customer-prepayment agreement with NVIDIA International, Inc.: the customer prepays; KYEC and AeternZ build US capacity, reserve it and provide test; the prepayment is offset against later service fees until it is used up. The filing named no dollar amount and no US city. Tuesday’s $1.1 billion is NVIDIA’s figure for that structure, not KYEC’s capex. Our arithmetic on the two numbered dollar advances: **$1.1 billion + $1.3 billion = $2.4 billion**. NVIDIA’s Form 10-Q for the quarter ended **26 July 2026** already carried **$279 billion** of supply-and-capacity commitments, up from **$119 billion** the quarter before, “primarily memory and manufacturing facilities.” Our arithmetic: $2.4 billion is about **0.9%** of that book (2.4 ÷ 279 = 0.0086). The last-quarter jump was **$160 billion** (279 − 119). Tuesday’s named dollars are small on the commitment line and a full year of cash for the testers and OSATs that receive them. The same 10-Q says some of these agreements “may be cancelable, rescheduled, or adjustable … prior to placing firm orders,” and that Vera Rubin “began production shipments in the third quarter of fiscal year 2027” while NVIDIA is “currently experiencing certain supply constraints.” Cash is leaving to buy the finish. The finish is still the constraint. ## What a capacity reservation buys An AI accelerator does not leave as a bare die. The logic wafer comes off a foundry line. HBM stacks sit beside it. Both sit on a silicon interposer, and that sandwich sits on an IC substrate — the board that carries the package to the server. ABF is the build-up film inside the high-density versions of that board. A tester then signs the module off. Co-packaged optics put the optical engine in the same package, so the light pipe is on the same clock as the board. NVIDIA is paying at four finish steps at once. Substrates: IBIDEN Ono to 3× with added capacity in **Q1 2028**, Unimicron KF from **Q2 2027** and full in **mid-2028**, SEMCO from **2026**. Interposers: Amkor in Korea, a greater-than-300% increase — our arithmetic, **4×** today’s wafers — by **end-2028**. Test: $1.1 billion to KYEC, high-volume **April 2027**, and NVIDIA’s own test capacity to double in calendar 2027\. Optics: SPIL **15× by mid-2027**, then another doubling by **end-2028**. Our arithmetic if those two steps stack: **30×** today’s optical-engine output. NVIDIA did not disclose the base. The plants have to be built before the 2027–28 seats exist. A reserved line without a matched substrate is still an empty appointment; see [IC substrates and ABF](https://www.sotkn.com/explained/ic-substrates-abf-explained/). ## The second-order read **Who gets paid.** IBIDEN, Samsung Electro-Mechanics and Unimicron, if the substrate reservations become wafers. Amkor, on the $1.3 billion Korea cheque and the Arizona book. KYEC and AeternZ, as the $1.1 billion is drawn down in test hours. SPIL, on optical-engine volume. Tool vendors and contractors get paid first: a reservation funds a building. **Who pays.** NVIDIA, from the $279 billion supply-and-capacity book printed on 26 July. Some of that book can still be cancelled or moved before a firm order. An advance offset against later services is not a take-or-pay GPU. **Upstream.** ABF film, substrate tools, interposer lines, testers and cleanrooms. SEMCO’s same-day note adds embedded MLCCs and silicon capacitors inside the substrate — more of SEMCO’s own parts list in the sandwich, not a new NVIDIA dollar print. **Downstream.** GPU packages that can ship, then hyperscalers and neoclouds that can bill hours. They do not get this cheque. They get a seat if the 2027 and 2028 clocks hold. **Stuck step.** The finish — substrate, interposer, test, optical engine — not the leading-edge wafer. ## Two cautions The percentages are targets, not installed wafers. 2.5× substrates, 3× at Ono, greater than 300% at Amkor, 15× then a further doubling at SPIL, test capacity doubling in 2027: all aims, dated 2026 through end-2028\. IBIDEN’s advance was “signed and announced earlier this year”; Tuesday restates it. SEMCO’s “significant portion” of 2028 output is not a share. Unimicron’s dollar figure, KYEC’s US city and SPIL’s optical-engine base are undisclosed. The dollars do not add cleanly. Our arithmetic on Amkor’s two named agreements is **$2.8 billion** against a **$3 billion** total. NVIDIA’s $1.1 billion is an advance against future test, not KYEC’s plant cost. The 10-Q warning still sits on the $279 billion: these commitments can be cancelled, rescheduled or changed before firm orders. ## What would change the view A 10-Q that cuts the $279 billion book, or a supplier filing that a reservation was cancelled, would mean the cash is being unwound before the seats exist. A dated Amkor interposer-wafer start, a KYEC US high-volume date that holds in April 2027, or a Unimicron KF add in Q2 2027 would turn Tuesday’s percentages into a clock. If substrate and packaging lead times actually shorten through 2027, the bind is moving off the board. If they do not, Tuesday was a down-payment on a still-short finish. ## What to watch - **NVIDIA fiscal Q3 2027 results, mid-November 2026**: supply-and-capacity commitments versus the **$279 billion** printed 26 July. - **SEMCO first NVIDIA ABF deliveries in 2026**. - **KYEC US high-volume production, April 2027**, and whether KYEC files the $1.1 billion. - **Unimicron KF add, Q2 2027**; full **mid-2028**. - **IBIDEN Ono added capacity, Q1 2028**. - **Amkor Korea interposer wafers through end-2028**, against the >300% target. - **SPIL optical engines, mid-2027 (15×) and end-2028 (further doubling)**. *Read: [Semiconductors](https://www.sotkn.com/stack/semiconductors/) and [IC substrates and ABF](https://www.sotkn.com/explained/ic-substrates-abf-explained/).* --- **Get the Wire.** A free brief every day, here and in your inbox. **[Subscribe free →](https://www.sotkn.com/#/portal/signup)** Sources: [NVIDIA, “NVIDIA and Supply Chain Partners Expand Capacity to Accelerate AI Infrastructure Buildout”](https://nvidianews.nvidia.com/news/nvidia-and-supply-chain-partners-expand-capacity-to-accelerate-ai-infrastructure-buildout?ref=sotkn.com), 21 Oct 2026; [Amkor, “Amkor Technology and NVIDIA Advance Strategic Partnership for AI Infrastructure”](https://ir.amkor.com/news-releases/news-release-details/amkor-technology-and-nvidia-advance-strategic-partnership-ai?ref=sotkn.com) ($1.3 billion Korea; Arizona plus Korea $3 billion), 21 Oct 2026; [Samsung Electro-Mechanics, “Samsung Electro-Mechanics and NVIDIA Announce Strategic Partnership to Supply ABF Substrates”](https://www.prnewswire.com/news-releases/samsung-electro-mechanics-and-nvidia-announce-strategic-partnership-to-supply-abf-substrates-302915375.html?ref=sotkn.com), 21 Oct 2026; [Amkor, $1.5 billion US advanced-packaging prepayment](https://ir.amkor.com/news-releases/news-release-details/amkor-technology-announces-strategic-partnership-nvidia-expand?ref=sotkn.com), 23 Jul 2026; [KYEC material information (MOPS reprint): customer prepayment with NVIDIA International / AeternZ](https://ww2.money-link.com.tw/realtimenews/NewsContent.aspx?PU=0009&SN=2431385002&ref=sotkn.com), 13 Oct 2026; [NVIDIA, Form 10-Q for the quarter ended 26 July 2026](https://www.sec.gov/Archives/edgar/data/1045810/000104581026000075/nvda-20260726.htm?ref=sotkn.com) (supply and capacity $279 billion, from $119 billion; cancelable before firm orders; Vera Rubin production shipments in Q3 FY2027). Not investment advice. Do your own research. The $2.4 billion, 0.9%, $160 billion, $2.8 billion, 4× and 30× figures are our arithmetic.