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Upgrade your RAM (and match it)

16 GB is the comfortable minimum for modern Windows use. Always buy matched pairs for dual-channel speed.

  • DifficultyMedium
  • Time30 min
  • RiskLow
  • ReversibleYes
  • PlatformAny
  • Updated
What that means

Low risk. This fix only checks things, or changes settings you can switch back in the same place. This change is reversible — you can return to the previous state without professional help or data loss.

A PC case memory slot diagram with two sticks installed and a third highlighted, annotated with type and speed first, identical stick for dual channel, one firm click means seated

What usually goes wrong

  • Two sticks go in the matching-coloured slots — usually the 2nd and 4th counting from the CPU, not the two side by side. The wrong pair of slots gets you single-channel and quietly costs you the speed you just paid for. The motherboard manual has the diagram.
  • Fitting the RAM is only half of it. Enable XMP (Intel) or EXPO (AMD) in the BIOS afterwards, or the sticks run at the slow default speed regardless of what's printed on the heatsink.
  • Unplug at the wall and hold the power button for ten seconds before you open the case. That drains the residual charge that's still in the board after shutdown.
  • Mixing a new stick with your existing one usually works, but both drop to the slower one's timings. A matched kit is tested to run together; two singles are not.
  • Won't turn on after fitting? Reseat before you assume the stick is dead. Most 'faulty RAM' is one end that never fully clicked in.

Steps

How to verify the fix

Task Manager → Performance → Memory shows the new total capacity and dual-channel is active.

If this didn't fix it

Capacity hasn't changed after reseating, or the PC won't post — remove the new stick and re-check type/speed compatibility.

Next stop: the related fixes below, or start a guided diagnosis.