Huawei has never stood up in front of an audience and talked about its laptop silicon before this week. Every Kirin PC chip up to now arrived through a spec sheet or a leak, never a stage. That changed at a HarmonyOS computer event in China where Zhu Dongdong, president of Huawei’s tablet and PC product line, named two new processors: the Kirin X90 Plus and the Kirin XE90. Full specifications land August 5, when they show up inside the MateBook Fold Ultimate Design and the MateBook Pro S. Until then, everything on the record is a claim.

Both chips are refinements of the existing Kirin X90 rather than a new microarchitecture, which on its own says less than the framing around it. Huawei is doing here roughly what Apple did with the M-series: split one design into a performance variant and an efficiency variant. The X90 Plus, headed for the flagship Fold, claims to run on a smaller node than the standard X90’s SMIC N+2. Read that as N+3, the same process behind the Kirin 9030 in this year’s Mate 80. The XE90, bound for the featherweight Pro S, claims 23 percent higher single-core performance, 25 percent better efficiency, and a 40 percent NPU bump over the original X90, plus something new: ray tracing, demoed onstage with two basketball titles. That last part doesn’t square with a simple clock bump. The X90’s GPU has no RT hardware at all. Whatever silicon block Huawei bolted onto the XE90 most likely came from the Maleoon 935 in the Kirin 9030 Pro, which means the chip is quietly inheriting GPU and NPU IP from a newer family while still wearing the X90 badge.

I keep coming back to how fast this iteration cycle has gotten. X90, then X90A, now X90 Plus and XE90, all inside one generation, all squeezed out of a process node that hasn’t moved since SMIC hit its wall. That’s the real story, and it’s more interesting than the stage reveal. I’ve written before about how HiSilicon clawed its way back from a supply embargo that was supposed to kill it in 2020, and this is what that recovery looks like three years after the Mate 60 first proved SMIC could hit 7nm at all. SMIC’s N+2 is a genuine 7nm-class node, confirmed by an independent teardown, built without EUV lithography because EUV tools remain export-controlled and no Chinese foundry has one. SMIC gets there with deep ultraviolet multi-patterning, including self-aligned quadruple patterning on the tightest metal layers, and it works, but it has a ceiling. A teardown lab tore down a Kirin 9030 built on N+3 back in June and found a 32.5 nanometer minimum metal pitch, tighter than Intel’s 18A on some measurements, paired with transistor density 38 percent below Intel 18A’s high-density cells. It beats TSMC’s N6. It loses badly to anything current.

Put the process gap next to what Huawei’s rivals are shipping, and the distance is stark. TSMC entered volume production on its N2 node late last year, good for roughly 15 percent more performance or 25 to 30 percent less power against N3E. Apple’s M4 runs on TSMC 3nm. The Qualcomm X Elite in every halfway competent Windows-on-Arm laptop runs on TSMC 4nm. A Kirin X90 derivative on SMIC 7nm in 2026 is competing three to four process generations behind, and that compounds into exactly the kind of sustained-workload and battery-life deficit a 23 percent single-core claim can’t paper over. None of this is HiSilicon’s engineering failing, and the architectural tricks the team keeps finding to squeeze more out of a fixed node are worth respecting on their own terms, even when IBM’s own 3D stacking work makes clear there’s more than one way to route around EUV. What HiSilicon is doing is the direct, intended result of the Commerce Department’s 2020 rule change that cut Huawei off from TSMC, Samsung, and every other leading foundry in one move. SMIC 7nm without EUV is what building a flagship chip under an embargo actually looks like.

The hardware wrapped around the XE90 is legitimately clever, for what it’s worth. The MateBook Pro S is shaping up to be the lightest 14-inch laptop Huawei has built: 798 grams, 11.9 millimeters thick, a magnesium-lithium alloy chassis with a three-section motherboard, a 102-blade diamond aluminum fan, and a ceramic composite heat spreader Huawei says cuts self-heating by 70 percent. Eighteen hours of claimed video playback, 66-watt reverse charging on both sides, Wi-Fi 7. That’s a serious industrial design effort spent making a mid-tier process node feel competitive on the outside, and I don’t doubt the engineering. I doubt the market-share numbers on the same slide, unaudited claims of 12 percent share in China’s premium thin-and-light segment and 70 percent of the ultra-high-end foldable PC market, because a company grading its own homework in a room it controls isn’t the same as an independent count.

I’m not going to relitigate the HarmonyOS data-sovereignty questions here, whether a laptop running an operating system built entirely outside Android and Google, sold only in China, and subject to China’s National Intelligence Law is something a Western enterprise buyer should touch. That’s its own post. What I keep sitting with is narrower: Huawei has now proven it can out-iterate its own process ceiling faster than almost anyone expected back in 2020, and it still hasn’t broken through it. August 5 tells us whether the ray tracing claim survives contact with an actual review unit, or whether it’s another slide that ages badly the way so many of these do.

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