Upgrading your RAM can significantly boost your system's performance. If you have a pre-installed 4 GB DDR4 RAM stick but wish to add a 16 GB DDR4 RAM stick, it is usually okay to do so. However, several conditions need to be met for a smooth and optimal operation. This article will guide you through the necessary considerations and help you understand the practical implications.

Compatibility

Before installing the additional RAM, it's crucial to ensure compatibility with your motherboard. Both RAM sticks should be of the same type, and your motherboard should support the combination. Check your motherboard's manual or specifications to confirm the supported RAM type, speed, and maximum capacity.

Speed

RAM sticks often run at the speed of the slowest stick in the system. For instance, if you have a 4 GB 2400 MHz RAM stick and a 16 GB 3200 MHz RAM stick, the system will operate at a speed of 2400 MHz. This means that both RAM sticks should ideally have the same speed to ensure optimal performance.

Dual Channel

Using RAM sticks of different sizes can affect the dual-channel operation, which is where both sticks work together to deliver optimal performance. For the best results, it is recommended to use RAM sticks of the same size and speed in each slot to enable true dual-channel operation.

Voltage

Both RAM sticks should also operate at the same voltage. Voltage differences can cause stability issues and may lead to system instability or crashes.

Performance Considerations

Regarding performance concerns, even if your system can handle 20 GB of RAM, there's often a bottleneck well before you reach that limit. Most modern applications and games don't require such vast amounts of RAM. Therefore, adding a 16 GB DDR4 stick can significantly boost your system's performance without any significant drawbacks if the conditions mentioned above are met.

Installation

When installing the new RAM stick alongside the existing one, make sure to follow the proper installation steps. If your motherboard does not support larger single RAM modules, you might need to remove the 4 GB stick and install the 16 GB stick alone. This will ensure that you are using the maximum capacity available to you.

Conclusion

In summary, it is perfectly fine to use a 16 GB DDR4 RAM stick with a pre-installed 4 GB DDR4 stick provided you ensure compatibility in terms of type, speed, and voltage. For optimal performance, it is recommended to match the RAM sticks in terms of size and speed. By following these guidelines, you can enhance your system's capabilities and enjoy improved performance.