$NVIDIA(NVDA.US) Q1 Earnings Preview:My pre-earnin

$NVIDIA(NVDA.US) Q1 Earnings Preview:

My pre-earnings notes & watchpoints.

Nvidia will have implications across the whole AI ecosystem on names like: $Taiwan Semiconductor(TSM.US), $Lumentum(LITE.US), $Coherent Corp.(COHR.US), $Applied Optoelectronics(AAOI.US), $Aehr Test(AEHR.US), $Corning(GLW.US), $AXT(AXTI.US), FOCI (3363), Browave (3163), $SIVE, Samsung, $Micron Tech(MU.US), SK Hynix, $Vertiv(VRT.US), $Super Micro Computer(SMCI.US) etc.

CPO supply chain:

1. Spectrum-X

- any push from H2 2026 into H1 2027, even one sentence of "later this year" framing, is a deferral.

- Spectrum-6 ASIC will power two devices (SN6810 + SN6800) - are either sampling w/ hyperscaler customers yet?

- ECOC in late Sept is the next public catalyst, so Jensen has incentive to set up narrative on this call.

2. Has Quantum-X actually shipped yet + at what cadence?

- "Early 2026" was the original window.

- If Jensen quantifies units shipped / customers ramped / hyperscaler deployments, that's confirmation the COUPE supply chain is holding.

- Silence could imply yield/integration friction at $Taiwan Semiconductor(TSM.US) CPO node + negative read-thru for H2 photonics line.

3. Rubin SiPh

- Jensen has consistently listed the silicon photonics processor as one of the chips of the Rubin platform.

- Is this discrete from the CPO switches, integrated into NVLink 6? Or part of a separate scale-across fabric?

- Clarity here matters because it determines whether Nvidia is doubling CPO content per system or just moving CPO from switches into the rack.

- Doubling content per NVL576 has direct implications on optical engine demand - and therefore to InP substrate, EML laser and PIC volumes.

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Other watchpoints:

1. Q2 guide & trajectory of Rubin handoff:

I feel like anything below ~$84B reads as a deceleration into the Rubin transition window.

Anything >$88B forces up sellside numbers across 2026.

- Will GB300 Ultra move from sampling -> production shipments this Q?

- Does Vera Rubin remain "Q3 timeframe" of 2026?

A Rubin pull-in would be v. bullish.

2. Gross margin direction:

Nvidia predicts GM will narrow to ~70% as Blackwell ramp continues during the original B200 ramp before recovery.

Rubin starts a fresh dilution cycle in H2 - if Kress signals Q2 GM below 75% (citing GB300 mix / early Rubin spend), the current multiples look way too high imo.

I feel like: Rubin ramp + HBM4 cost inflation + adv. packaging tightness = real downside risk that's hard to hedge against.

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Just some condensed notes that I think are most relevant to you guys, esp. since we're all in a lot of the CPO-related names.

I personally care less about the headline numbers, but more so about fwd commentary that impacts the rest of the supply chain.