RAM Bandwidth Calculator
Calculate memory bandwidth in GB/s from RAM frequency, bus width, and channel count. Understand how your memory configuration affects system performance.
How to Use the RAM Bandwidth Calculator
- Enter RAM effective frequency in MHz (e.g., 3200 for DDR4-3200).
- Enter bus width in bits (typically 64 for consumer RAM).
- Enter number of channels (1 for single, 2 for dual).
- Click Calculate to get bandwidth in GB/s.
Cas d'utilisation
- •Comparing memory configurations for gaming or workstations.
- •Understanding memory bottlenecks in CPU-intensive tasks.
- •Planning memory upgrades for video editing or ML workloads.
- •Evaluating DDR4 vs DDR5 upgrade benefits.
Formule
Bandwidth (GB/s) = Frequency (MHz) × 2 × Bus Width (bits) × Channels / (8 × 1000).
Questions fréquemment posées
Why multiply by 2?
DDR (Double Data Rate) RAM transfers data on both the rising and falling clock edges, doubling effective frequency.
Does dual-channel double bandwidth?
Yes — dual channel doubles bandwidth over single channel, which significantly improves performance in memory-bound tasks.
What bandwidth does DDR5-6000 dual-channel provide?
DDR5-6000 dual channel: 6000 × 2 × 64 × 2 / (8 × 1000) = 192 GB/s theoretical bandwidth.