Specifications
Sourced specs
| Spec | Value | Source |
|---|---|---|
| Interface | 2,048-bit (doubled from 1,024-bit of HBM3E), per JEDEC HBM4 standard (April 2025) | via news.skhynix.com ↗2025-09-12 |
| Speed | Over 10 Gbps operating speed, exceeding the JEDEC standard of 8 Gbps | via news.skhynix.com ↗2025-09-12 |
| Memory bandwidth | Over 2 TB/s per stack (2048-bit at 8-10+ Gbps) | via en.wikipedia.org ↗2025-09 |
| Power efficiency | More than 40% improved vs previous generation | via news.skhynix.com ↗2025-09-12 |
| Process node | 1bnm (fifth-generation 10nm-class) DRAM; Advanced MR-MUF packaging | via news.skhynix.com ↗2025-09-12 |
Pricing
Price history, newest first
Step chart of per-unit observations (system and order totals stay in the table). The line is drawn in USD at each observation year's average FX rate so mixed-currency histories read as one trend; hover any point for the price exactly as reported.
| Date | Price | Type | Source | Confidence |
|---|---|---|---|---|
| 2026-08 | ~$550 per stack (HBM4 12-Hi estimate)HBM4 12-Hi 36GB estimated $500-600+ per stack, +55-70% vs HBM3E, ramping for Nvidia Vera Rubin | Analyst estimate | via Silicon Analysts HBM pricing tracker ↗ | low |
| 2026-07-12 | ~$2 per Gb (HBM4, 2H 2026)HBM4 about $2 per Gb in 2H 2026 | Reported contract | via Digitimes via Seoul Economic Daily ↗ | medium |
| 2026-07-12 | ~$5 per Gb (HBM4, 2027 expectation)HBM4 prices expected to roughly double to $4-5+ per Gb next year (2027); 2027 supply prices to be finalized around Q4 2026 | Analyst estimate | via Digitimes via Seoul Economic Daily ↗ | low |
| 2025-11-27 | ~$560 per stackSK hynix HBM4 price 'around the mid-US$500 level' for Nvidia supply; EEWorld (https://en.eeworld.com.cn/news/manufacture/eic712925.html) reports the final settled price at approximately $560 per stack, ~50-60% above HBM3E | Reported contract | via Digitimes; EEWorld reports ~$560 (~KRW 800,000) agreed with Nvidia ↗ | medium |
vendor-official or multiple independent reports · single major report or several secondary · estimate or lone secondary source
Prices in USD, converted at each observation year's average exchange rate; the original figure and rate print under every converted price. How prices are sourced and graded ↗
Context
Notes
- Capacity per stack not stated in SK hynix's September 2025 announcement (12-Hi 36GB configurations widely reported for the Rubin ramp, not vendor-confirmed)
- UBS projects SK hynix at ~70% of Nvidia's HBM4 supply for Rubin in 2026
Where it sits
In the stack
All specs and prices link to their original sources, dated as observed. Figures are market observations, not offers; treat each as of its date.