ddr4 and ddr3 compatibility issues

After ddr4 came out in the memory, many netizens chose ddr3 because it was cheap. However, some friends originally had ddr3 and wanted to know whether the newly purchased ddr4 can be used together. In fact, it cannot, because Even the slots are different, so they can't be used together.

Can ddr4 and ddr3 be used together:

Answer: They cannot be used together.

The slots of ddr4 and ddr3 are different, so they are incompatible and cannot be mixed together.

Differences between ddr4 and ddr3:

Appearance:

1. The card slot positions of ddr4 and ddr3 are different, so they are not compatible.

2. Although both are located on the insertion side, the position of ddr4 is somewhat different.

Capacity:

1. In theory, each of ddr3 and ddr4 can reach 512gib capacity.

2. However, the maximum capacity of each ddr3 is only 128gib.

Energy consumption:

1. The working voltage of ddr3 is 1.5v.

2. DDR4 is 1.2v.

Performance:

In anandtech independent test data, the performance of ddr4 is better than ddr3, but it is really only a little better.

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