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Quick answer: Power off and unplug the PC, ground yourself, open the side panel, and unlock the DIMM slot latches. Line up the notch in the RAM stick with the key in the slot, press both ends down firmly until the latches click, then boot into the BIOS and enable XMP (Intel) or EXPO (AMD) so the memory runs at full speed.
Step 1 – Prepare the PC
Shut down, switch off the PSU, and unplug the power cord. Press the power button for five seconds to drain residual charge, then touch the bare metal of the case (or wear an antistatic strap) before handling components. Lay the case on its side for straight-down access to the slots.
Our pick for this guide: Corsair Vengeance DDR5 32GB (2x16GB) 6000MHz Kit
A matched two-stick kit is what makes the A2/B2 dual-channel install in this guide work first try, instead of mixing modules that refuse to train at rated speed.
Step 2 – Pick the right slots
For two sticks on a four-slot board, use A2 and B2 – the second and fourth slots from the CPU. This activates dual-channel mode, which roughly doubles memory bandwidth compared to two sticks side by side in the wrong slots.
Step 3 – Seat the sticks
Open the latch at each end of the slot (some boards have a fixed end and one latch). The notch in the stick’s gold contacts is off-center, so it only fits one way:
- Align the notch with the key in the slot.
- Press straight down on both ends at once with firm, even pressure.
- Stop when you hear the latches snap into place – a properly seated stick sits level with no gold contacts visible.
Step 4 – First boot and enabling full speed
Reconnect power and boot. A memory change can trigger one slow “memory training” boot – a black screen for up to a minute or two on DDR5 systems is normal. Once in Windows, confirm the capacity in Task Manager → Performance → Memory.
Then restart into the BIOS and enable XMP or EXPO. Without it, a 6000 MHz kit runs at 4800 MHz. If you want to verify the result, our guide on how to check RAM speed shows three quick ways.
Choosing the right kit
If you have not bought the memory yet, match the DDR generation to your board (DDR4 and DDR5 are not interchangeable) and prefer a matched two-stick kit. Our roundup of the best DDR5 RAM kits covers tested options for gaming and productivity builds.
Frequently asked questions
Which RAM slots should I use for two sticks?
On a four-slot motherboard, use slots 2 and 4 counting from the CPU (usually labeled A2 and B2). This enables dual-channel mode and matches what motherboard manuals recommend for the best stability and performance. When in doubt, check the manual – a few boards differ.
Why is my new RAM not running at its advertised speed?
RAM defaults to a conservative JEDEC speed until you enable its profile. Enter the BIOS (usually Del or F2 during boot) and turn on XMP on Intel boards or EXPO on AMD boards. One setting, one reboot, and the memory runs at its rated speed.
Can I mix different RAM brands or speeds?
It often works, but the kit will run at the speed and timings of the slowest stick, and mixed kits are the most common cause of instability. For a guaranteed result, use a matched kit of the same model and capacity.
Ten minutes, one screwdriver, and one BIOS setting – that is the entire job. RAM is the easiest upgrade in PC building, and the performance gain in multitasking is immediate.
