Market Context
DDR5 / Mobile Trend
↑ Rising
Apple CFO commentary flagged higher memory costs specifically for September as AI customers keep pulling wafer capacity toward HBM/DDR5 and away from the mobile DRAM phones need — the clearest evidence yet the shortage has reached consumer-electronics pricing
DDR4 Spot Trend
■ Holding Record
Mainstream DDR4 (1Gx8, 3200) spot is holding last week’s ~$44.54 record with no fresh move reported this week; legacy supply stays structurally tight as wafers keep shifting to HBM
HBM Capacity
Expanding, Still Sold Out
Samsung is targeting roughly 50% more production capacity in 2026 and SK Hynix has announced a 4x-plus increase in infrastructure investment, but all three majors still describe 2026 HBM output as effectively sold out or committed to lead customers
Supplier Sentiment
Goldman Turns Constructive
Goldman Sachs flipped bullish on memory chips this week, but Micron shares still fell nearly 5% on September 10 amid a new Netlist patent/ITC action and broader chip-sector jitters — sentiment and legal risk are pulling in opposite directions ahead of Micron’s Sept 30 print
Price Trends$/GB — Trailing 18 Months + 18-Month Forecast
DDR5
HBM3E ÷10
DDR4 ÷10
Shaded regions = optimistic/pessimistic confidence bands
HBM3E and DDR4 scaled ÷10 for legibility (actual: HBM3E ~$30/GB, DDR4 ~$45/GB)
Sources: TrendForce, spot market indices, DM estimates
Spot PricesDRAM SKU Pricing — Week of Sep 7
DDR5 · 16Gb · 4800/5600 MT/s
$2.49/GB ($4.98)
▲ Up WoW
Prior week: $4.79
DM estimate anchored to TrendForce’s mainstream spot series; Goldman Sachs turned constructive on memory chips this week, reinforcing the continued-uptrend read
DDR5 · 32Gb · 6400 MT/s
$2.61/GB ($10.43)
▲ Up WoW
Prior week: $10.02
Server RDIMM stays sold out through 2027; no change to TrendForce’s 15–20% YoY RDIMM bit-supply growth estimate this week
DDR4 · 8Gb (1Gx8) · 3200 MT/s
$44.54/GB ($44.54)
■ Holding Record
Record set week of Aug 31
No fresh weekly-tracker read this week; DDR4 legacy supply remains structurally tight as the majors keep prioritizing HBM and DDR5 wafer allocation
DDR4 · 16Gb (2Gx8) · 3200 MT/s
$46.01/GB ($92.02)
■ Holding Record
Prior: $46.01
Tracks the 8Gb SKU; holding flat this week pending a fresh tracker update
LPDDR5X · Mobile · Q3 Contract
~$26.50/GB
▲ Up QoQ
Prior: ~$25.50/GB
Apple flagged materially higher memory costs specifically for September as AI customers pull wafer capacity away from mobile DRAM — the first direct OEM confirmation this digest has seen of the shortage reaching handset bills of materials
HBM4 · 36GB 12-High Stack
~$500/stack
■ Allocation Only
2026–2027 output sold out
Samsung is targeting ~50% more 2026 production capacity and SK Hynix over 4x more infrastructure investment, but all three majors still describe 2026 HBM output as effectively committed
Supplier IntelSamsung · SK Hynix · Micron
S
Samsung
KRX: 005930
Targeting roughly 50% more memory production capacity in 2026 as it and SK Hynix both scale up to meet AI demand that shows no sign of moderating
Continues narrowing the HBM3E/HBM4 gap with SK Hynix as its own capacity programs mature, per ongoing industry tracking
Benefits indirectly from Apple’s public acknowledgment of rising mobile-memory costs, which validates pricing power across all three merchant DRAM suppliers, not just the AI-exposed portion of the business
H
SK Hynix
KRX: 000660
Jumped 7% to $188.52 on September 8 after Apple CEO Tim Cook told investors the company expects to pay even higher memory costs in September, as AI customers pull wafer capacity from phone-grade DRAM
Gained another 5% on September 9 after Goldman Sachs flipped constructive on memory chips, flagging SK Hynix and Micron as breaking their summer downtrends
Announced plans to increase infrastructure investment by more than 4x, the most aggressive capacity commitment among the three majors disclosed so far this cycle
M
Micron
NASDAQ: MU
Fell 4.7% on September 10 to $977.41 (a 19% discount to its June all-time high) on a mix of regulatory concerns, a new Netlist patent/ITC action, and broader macro pressure (rising bond yields, elevated oil prices)
Named alongside Supermicro, HPE, and Lenovo in Netlist’s ITC complaint seeking exclusion and cease-and-desist orders over four patents reading on DDR5 RDIMMs and MRDIMMs, plus a parallel California federal court suit
Disclosed extraordinary Taiwan employee bonuses of 35 to 68 months’ pay for fiscal 2026 even as the stock wobbled — a striking real-world data point on just how profitable the current cycle has been at the operating level, decoupled from this week’s share-price noise
IndustryBroader DRAM & Memory News
Legal Risk
Netlist’s ITC complaint against Micron, Supermicro, HPE, and Lenovo — seeking exclusion and cease-and-desist orders over four patents covering DDR5 RDIMMs and MRDIMMs — resurfaced as a stock-moving factor on September 10, alongside a parallel federal patent suit in California
Filed August 12 but only now hitting share prices, this is a reminder that supply-shortage pricing power doesn’t make a supplier immune to patent risk — an ITC exclusion order, however unlikely to fully materialize, would be a real near-term supply disruption layered on top of an already-tight DDR5 market.
Sentiment Shift
Goldman Sachs turned constructive on memory chips this week, flagging SK Hynix and Micron as breaking their summer downtrends; SK Hynix gained 5%, SanDisk 3%, and Micron 2% on the call before Micron gave much of that back two days later
The whipsaw — a bullish sell-side call on Tuesday, a nearly 5% Micron drop on Thursday over legal and macro concerns — captures how unsettled the market still is about whether the memory supercycle is a durable re-rating or a trade that can reverse on a single headline.
Consumer Impact
Apple CEO Tim Cook told investors the company expects to pay even higher memory costs specifically in September, as AI customers continue diverting wafer capacity away from phone-grade DRAM
This is the most direct evidence yet that the memory shortage has reached finished consumer-electronics economics, not just server and AI infrastructure bills of materials — and it is a large, credible buyer confirming the dynamic in its own words rather than an analyst inferring it from spot-price data.
Labor Signal
Micron disclosed that its Taiwan direct-labor employees will receive fiscal 2026 bonuses equal to 35 to 68 months of pay, with a minimum cash payout of T$1.7 million
Bonus pools of this size are a real-world profitability signal that doesn’t show up cleanly in a stock chart buffeted by legal headlines and macro noise this week — it’s a useful counterweight to reading Thursday’s 4.7% drop as evidence the cycle is turning.
Capacity Response
Samsung is targeting roughly 50% more memory production capacity in 2026, and SK Hynix has announced a more than 4x increase in infrastructure investment
Both moves confirm the majors are underwriting a multi-year demand forecast rather than treating the current shortage as transient — but new capacity of this scale takes years to reach volume output, so neither expansion changes the near-term allocation picture investors and OEMs like Apple are living with today.