A DRAM 速度 计算器 helps determine the effective data transfer rate of 动态随机存取存储器 (DRAM). This is crucial for understanding the performance of RAM modules used in computers, servers, and other electronic devices. By inputting the base clock frequency, the calculator provides the effective transfer rate in Megatransfers per second (MT/s), which is essential for comparing memory performance.
Formula of Dram Speed Calculator
The effective transfer rate of DRAM is calculated using the following formula:
Effective Transfer Rate (MT/s) = Base Clock Frequency (MHz) × Multiplier
地点：
- MT /秒 代表 Megatransfers per second
- 基本时钟频率 is the fundamental clock speed of the memory (MHz)
- 乘数 取决于 DDR generation:
- DDR: 2
- DDR2: 2
- DDR3: 2
- DDR4: 2
- DDR5: 2
General DRAM Speed Table
Below is a table with common DRAM speeds based on base clock frequencies and their DDR multipliers:
| DRAM 类型 | Base Clock Frequency (MHz) | Effective Transfer Rate (MT/s) |
|---|---|---|
| DDR | 100 | 200 |
| DDR | 133 | 266 |
| DDR2 | 200 | 400 |
| DDR2 | 266 | 533 |
| DDR3 | 400 | 800 |
| DDR3 | 667 | 1333 |
| DDR4 | 1200 | 2400 |
| DDR4 | 1600 | 3200 |
| DDR5 | 2400 | 4800 |
| DDR5 | 3200 | 6400 |
This table helps users quickly reference DRAM speeds without manually calculating each value.
Example of Dram Speed Calculator
假设你有一个 DDR4 memory module with a 基本时钟频率 of 1600 MHz. 计算 Effective Transfer Rate:
Effective Transfer Rate = 1600 MHz × 2 = 3200 MT/s
这意味着 DRAM module operates at 3200 Megatransfers per second，通常标记为 DDR4-3200.
最常见的常见问题解答
期限 双倍数据速率 (DDR) means that data is transferred on both the rising and falling edges of the clock signal, effectively doubling the transfer rate compared to the base clock frequency.
On Windows, you can check RAM speed by opening Task Manager (Ctrl + Shift + Esc) > Performance > Memory。 上 Mac，去 About This Mac > Memory.
Yes, but the improvement depends on the workload. Gaming, video editing, and multitasking benefit from higher DRAM speeds, but everyday tasks may not see a significant difference.