Comparison Table: DDR5 vs DDR4 vs HBM3 Memory
Memory Specifications
Specification
DDR5
DDR4
HBM3
Number of DIMMs
1, 2, or 4
1, 2, or 4
N/A
Channel Width
64-bit
64-bit
1024-bit per stack
Data Transfer Rate
Up to 51.2 GB/s (per channel)
Up to 25.6 GB/s (per channel)
Up to 665 GB/s per stack
Total Bandwidth
Up to 102.4 GB/s (quad-channel)
Up to 51.2 GB/s (dual-channel)
Up to 2.66 TB/s per package
Clock Speed
Up to 6400 MHz or higher
Up to 3200 MHz or higher
N/A
Voltage
1.1V-1.5V
1.2V
1.2V
Latency
Lower
Higher
Lower
Capacity
4GB-64GB
4GB-64GB
Up to 32GB per stack, up to 16 stacks per package
Applications
Servers, .. cntd
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