HBM vs DDR vs GDDR: Why SK hynix HBM is the Best Choice for AI and HPC
HBM vs DDR vs GDDR – Which Memory is Best?
Traditional Memory Limitations
· DDR → limited bandwidth
· GDDR → higher bandwidth but high power
· Both struggle with AI workloads
Why HBM is Different
HBM uses 3D stacking architecture, drastically reducing latency and increasing bandwidth.
Example:
· HBM2E bandwidth: ~460GB/s
· HBM3 bandwidth: up to 819GB/s

Comparison Table
| Memory Type | Bandwidth | Power Efficiency | Use Case |
| DDR | Low | Medium | General computing |
| GDDR | Medium-High | Low | Gaming GPUs |
| HBM | Ultra-high | High | AI / HPC |
Why SK hynix HBM Stands Out
· First to mass-produce HBM2E
· First to develop HBM3
· Continuous innovation into HBM3E & HBM4
Use Cases Driving HBM Demand
· Generative AI
· Machine learning
· Hyperscale data centers
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