Figure 1. Notch dierence
Increased thickness
DDR4 modules are slightly thicker than DDR3, to accommodate more signal layers.
Figure 2. Thickness dierence
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 one of the following actions after the Dell logo is displayed:
• With keyboard — 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 o
the computer and try again.
Realtek HD audio drivers
Verify if the Realtek audio drivers are already installed in the computer.
46
Technology and components