Tools

Five calculators for the decisions that come up while planning a build. Each one shows its arithmetic and states its assumptions, because a number without a method behind it is just a guess wearing a uniform.

• Power supply calculator — estimate system draw and see a suggested capacity.
• Memory capacity guide — how much memory each workload actually uses.
• Storage planner — work out capacity from what you keep.
• Upgrade planner — find which part is holding a machine back.
• Monitor and resolution helper — what a display asks of a graphics card.