Memory price index — one number for the memory market
An equal-weighted composite of every tracked memory contract, from HBM stacks to retail DDR5 kits.
Quick answer: as of 2026-10-12, HBM3 24GB 12-Hi Stack is $200.17 USD / stack, +0.20% over 30 days and +4.00% year over year. Across the 12 contracts tracked on this page the basket is +4.59% over 30 days and +303.58% year over year.
Individual contracts tell you what one part is doing; the composite tells you whether the whole market is moving. This page aggregates HBM, DDR5, DDR4, RDIMM, GDDR6, enterprise SSD and retail kit contracts into a single 30-day and year-over-year reading, with the full constituent table underneath so anyone can reproduce the number.
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Price explorer
Rebased to 100 at series start — compare moves across incompatible units.
Products — HBM3E-36G, DDR5-16G, DDR4-8G, RTL-32G4/6 selected ▾
Pick up to six products to plot. All segments · 53 available.
Tracked contracts
12 contracts · basket 30d +4.59% · basket YoY +303.58%
| Contract | Spot | Daily H / L | Session H / L | 30d | YoY | Chart | Source |
|---|---|---|---|---|---|---|---|
HBM3-24G HBM3 24GB 12-Hi Stack ~$8.33/GB. Allocation product — published levels are indicative, not an open spot market. USD / stack | $200.17 | $200.88 $198.81 | $201.11 $198.54 | +0.20% | +4.00% | Chart ↗ | Silicon Analysts HBM pricing table reported · 2026-07 |
HBM3E-36G HBM3E 36GB 12-Hi Stack Reported scarce-lot spot price, roughly 4–5x long-term-agreement levels. No like-for-like 30-day spot comparison is available. USD / stack | $2,094.00 | $2,120.00 $2,071.75 | $2,120.00 $2,044.80 | -0.74% | +14.00% | Chart ↗ | TrendForce citing Seoul Economic Daily spot-market reporting reported · 2026-09-01 |
HBM4-48G HBM4 48GB 16-Hi Stack Reported spot indication for a scarce 16-layer product entering mass production; this is not a settled contract price. USD / stack | $3,471.00 | $3,504.51 $3,420.44 | $3,520.83 $3,420.44 | -1.57% | 0.00% | Chart ↗ | TrendForce citing Seoul Economic Daily spot-market reporting reported · 2026-09-01 |
DDR5-16G DDR5 16Gb (2Gx8) 4800/5600 24 Sep session average. Demand remains selective even as the published average holds near its cycle high. USD / die | $58.12 | $59.51 $56.15 | $59.51 $51.69 | +5.06% | +480.00% | Chart ↗ | DRAMeXchange / TrendForce spot board reported · 2026-09-24 |
DDR5-16G-eTT DDR5 16Gb (2Gx8) eTT Untested die. The eTT-to-branded gap is the cleanest read on how tight qualified supply is. USD / die | $25.32 | $26.06 $24.79 | $26.06 $22.27 | +0.67% | +330.00% | Chart ↗ | DRAMeXchange / TrendForce spot board reported · 2026-09-24 |
DDR4-8G DDR4 8Gb (1Gx8) 3200 24 Sep spot average. Legacy-node supply remains tight, though weekly gains have slowed from the summer surge. USD / die | $46.23 | $47.64 $43.71 | $47.64 $40.35 | +7.71% | +860.00% | Chart ↗ | DRAMeXchange / TrendForce spot board reported · 2026-09-24 |
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Daily H/L is the current quote day's range; session H/L is the trailing 30-day quoting window. Last updated .
Get the Memory price index moves every Monday — week-over-week and year-over-year on the contracts above, plus the three headlines that moved a price.
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Latest supply-chain news
All chip news ↗- DRAMMarket data
24 Sep spot board: DDR5 16Gb reaches $57.667 while DDR4 16Gb slips to $83.784
DDR5 16Gb 4800/5600 averaged $57.667 (+0.29% session) and eTT reached $25.500 (+0.79%). DDR4 diverged: 8Gb 3200 averaged $46.107 (+0.47%), while 16Gb 3200 fell 0.70% to $83.784. These are session changes on the published board, not 30-day returns.
DRAMeXchange / TrendForce spot board ↗ - DRAMMarket data
17 Sep spot board: DDR5 averages $55.23; DDR4 16Gb retreats 1.85%
DDR5 16Gb 4800/5600 averaged $55.233 (+0.73%) and DDR5 eTT averaged $24.50 (+0.82%). DDR4 split: 8Gb 3200 rose 0.78% to $46.143 while 16Gb 3200 fell 1.85% to $86.00. The board remains historically expensive, but the first visible corrections are appearing in select legacy parts.
DRAMeXchange / TrendForce spot board ↗ - NANDDownside risk
512Gb TLC NAND slips to $20.083 as consumer buying stays weak
The 512Gb TLC wafer spot reference fell another 0.31% to $20.083 on 14 September after a 2.71% weekly decline to $20.146. Consumer purchasing remains cautious even while enterprise SSD demand keeps contract pricing elevated.
TrendForce ↗ - DRAMMarket data
Spot board, 1 Sep: DDR5 16Gb $54.08, DDR4 16Gb $92.02, DDR4 8Gb $44.54 — all up under half a percent
The 1 September session closed with DDR5 16Gb 4800/5600 at a $54.083 average (+0.31%), DDR4 16Gb 3200 at $92.024 (+0.27%) and DDR4 8Gb 3200 at $44.544 (+0.40%). Every line is still green, but the daily session moves are now fractions of a percent rather than the multi-point jumps of June and July. The spread is the story: DDR4 16Gb printed a $117.00 high against a $42.20 low in the same session.
DRAMeXchange / TrendForce spot board ↗
Keep digging
- Full memory chip price tracker
- Live memory prices (all contracts)
- Semiconductor prices (Beta)
- DRAM prices — spot & contract
- RAM prices & RAM price chart
- DDR5 price tracker
- DDR4 price tracker
- HBM price tracker
- HBM memory price chart
- HBM3E price per stack
- HBM4 price per stack
- HBM3 price per stack
- LPDDR5X & mobile DRAM prices
- NAND flash prices
- SSD prices & $/TB
- MemoryIndex composite price index
- Why are RAM prices so high?
- When will RAM prices go down?
- HBM vs DRAM price comparison
- DRAM vs NAND prices
- HBM3 vs HBM3E vs HBM4
- Samsung vs SK hynix vs Micron
- Memory manufacturer leaderboard
- AI company leaderboard
- Methodology & data sources
FAQ
- What is the MemoryIndex memory price index?
- It is a composite view of the whole tracked memory basket — HBM stacks, DDR5 and DDR4 dies, server RDIMMs, GDDR6, enterprise SSDs and retail kits — summarised as a single 30-day and year-over-year change so you can see the market direction without reading twelve individual contracts.
- How is the index calculated?
- It is an equal-weighted average of the percentage change of every tracked contract in the basket. Equal weighting keeps a single high-dollar HBM stack from dominating the reading, so the index reflects breadth of movement rather than absolute price level.
- How often does the index update?
- Spot levels move on a daily survey cycle, contracts settle quarterly, and HBM is sold on multi-quarter allocation. The index recomputes whenever an underlying level updates, and the timestamp above shows the last change.
- Can I cite or export the index?
- Yes. Every underlying contract exports to CSV or Excel from the button above, each level links to its source, and each is flagged reported, derived or estimate. Attribution to MemoryIndex.io is appreciated.