Figure 1. Notch difference
Increased thickness
DDR4 modules are slightly thicker than DDR3, to accommodate more signal layers.
Figure 2. Thickness difference
Curved edge
DDR4 modules feature a curved edge to help with insertion and alleviate stress on the PCB during memory installation.
Figure 3. Curved edge
Testing memory using ePSA
1. Turn on or restart your computer.
2. Perform the following actions immediately after the Dell logo is displayed:
ā With keyboard ā Press F2.
The PreBoot System Assessment (PSA) starts on your computer.
NOTE:
If you wait too long and the operating system logo appears, continue to wait until you see the desktop. Turn off
the computer and try again.
Realtek HD audio drivers
Verify if the Realtek audio drivers are already installed in the computer.
1. Click Start
2. Navigate to Control Panel
3. Under Device Manager, click Sound,video and game controllers
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