RAM
Fast, short-term memory that holds the data your CPU and GPU are actively working with.
What is it?
RAM (Random Access Memory) is volatile, high-speed memory that temporarily stores data and instructions actively in use — unlike storage, it's cleared when the system powers off.
What does it do?
It sits between storage and the CPU, giving the processor near-instant access to whatever it's currently working on, rather than reading from much slower storage every time.
Capacity
How much data can be held at once. Running out forces the system to swap data to much slower storage, causing stutters and slowdowns.
Speed
Measured in MT/s (often labeled MHz), speed affects how quickly data moves between RAM and the CPU. Some platforms are more sensitive to RAM speed than others.
Dual-channel
Using two matched sticks instead of one lets the memory controller read/write across both simultaneously, roughly doubling effective bandwidth.
Capacity
Sets a hard ceiling on how much can be held in fast memory before the system falls back to slower storage.
Speed
Higher speed generally improves performance, especially on platforms sensitive to memory bandwidth.
Latency (CL)
Lower is better at the same speed — it's the delay before memory responds to a request.
Insufficient RAM is one of the most common causes of a system that feels slow despite having a fast CPU and GPU — it forces constant, slow round-trips to storage.
Gaming typically plateaus in benefit past a certain capacity, but creative work (video editing, 3D, many browser tabs, virtual machines) can meaningfully benefit from more.
- Motherboard — Must match the memory type (e.g. DDR5) the board supports.
- CPU — Some CPU platforms see larger real-world gains from faster memory than others.
Common mistakes
- Buying a single stick instead of a matched pair, losing dual-channel bandwidth.
- Buying RAM faster than the motherboard/CPU officially supports without checking compatibility lists.
- Underestimating capacity needs for heavy multitasking or large creative projects.
How to choose
- Match capacity to your workload — everyday use is fine with less, heavy creative work benefits from more.
- Buy in a matched dual-channel kit, not a single stick.
- Confirm the motherboard supports the memory type and speed you're buying.
See RAM products and pricing, or get a build recommended.