ChangXin LPDDR6 reaches 12,800 Mbps as Samsung faces mobile DRAM threat

ChangXin Memory has become the first chipmaker to ship LPDDR6 commercially, beating Samsung and SK Hynix to a high-end mobile memory standard China long trailed. The self-developed chips entered mass production and the first batch shipped in Xiaomi's 18 Fold foldable flagship, the company said Saturday — the first time a Chinese memory maker has reached the market ahead of overseas suppliers on a new high-end standard.

"Among the players capable of challenging the two South Korean suppliers, Chinese companies now carry the most weight," Xiang Ligang, a veteran telecom observer, told the Global Times.

The LPDDR6 chip reaches a peak transfer rate of 12,800 Mbps with a maximum single-chip capacity of 16GB, a 60 percent bandwidth gain over LPDDR5X at 10,667 Mbps and 20 percent lower power consumption, according to CXMT. The Joint Electron Device Engineering Council released the LPDDR6 standard only in July 2025; CXMT moved from standard alignment through sampling to mass production in about a year and is also sampling the product to server and smart-cockpit customers.

The milestone lands as CXMT's financials show the scale of its ramp. First-half revenue reached 150.31 billion yuan ($22.37 billion), up 873.64 percent year on year, with net profit of 77.60 billion yuan reversing a 2.332 billion yuan loss a year earlier, in its first report since a STAR Market debut on July 27. Counterpoint Research ranked CXMT the fastest-growing DRAM supplier globally in the second quarter, with a 7 percent share of global revenue behind Samsung, SK Hynix and Micron.

The competitive stakes in mobile DRAM

The deployment inside Xiaomi's 18 Fold — a passport-style foldable powered by the XRing O3 chip and priced around 12,000 yuan ($1,789) — is the anchor, but the adoption question is whether CXMT's LPDDR6 spreads beyond a single handset maker. Xiaomi's foldable shipment targets of 200,000 to 300,000 units, reported by Reuters, are a fraction of Huawei's roughly 68 percent share of China's foldable market, making the 18 Fold a proving ground rather than a volume driver. CXMT's sampling to server and smart-cockpit customers points to the broader low-power memory demand Xiang cited across handsets, robots, smart-home devices and wearables.

The competitive pressure on Samsung and SK Hynix is already visible in the data. TrendForce reported CXMT expanded its share in LPDDR4X as Samsung scaled back that line, and the Chosun Daily flagged that competition in the mobile DRAM market Samsung long led could intensify once CXMT begins supplying LPDDR6 to Chinese handset makers. Morgan Stanley projects CXMT will reach monthly wafer capacity of 300,000 by year-end — about 13 percent of global DRAM wafer capacity and 11 percent of global bit shipments — rising to 500,000 by 2028, with a target price of 88 yuan, more than 10 times the offer price.

Self-sufficiency and the capacity question

CXMT's advance is inseparable from China's push to cut reliance on foreign advanced memory, a policy priority that has driven domestic supply chain investment even as US restrictions tightened. The company continued to expand capacity under those restrictions and last week sued the US Defense Department over its designation as a "military company" on the 1260H list, telling the Global Times it designs and manufactures DRAM for commercial and civilian use only.

The open question is what happens when the global supply shortage that lifted prices since the second half of 2025 normalizes. UBS expects Chinese DRAM makers' global shipment share to rise from 7 percent in 2025 to 9.4 percent in 2027, with capacity additions absorbed by AI data-center demand and the up-cycle running into the second quarter of 2028. Xiang argued the domestic market gives Chinese suppliers a buffer South Korean rivals also depend on. "When the cycle turns, there has to be a market capable of absorbing the capacity being built out now," he said.

For investors, the read-through is to CXMT's listed supply chain and the pressure on Samsung and SK Hynix in mobile DRAM, a segment where CXMT's 7 percent revenue share still trails the incumbents but is compounding fastest. Whether the LPDDR6 lead converts into durable share depends on adoption beyond Xiaomi — the spine that will determine if this is a one-off design win or the start of a structural shift in who supplies the world's flagship phones.

This article is for informational purposes only and does not constitute investment advice.