PC builder: you pick the parts, we check them
You choose parts one category at a time - processor, motherboard, memory, graphics card, storage, cooler, power supply, case. After each choice the remaining lists narrow to parts that fit what you have already picked, and the running total sits at the bottom. Nothing has to be memorised.
Compatibility: the mistake is caught before you buy
The check covers the processor socket, the memory type, the board format against the case, cooler height, graphics card length, and the power supply’s wattage and connectors. If the processor and the board use different sockets, that board is simply never offered. Errors block the build; warnings, such as a tight clearance for the graphics card, are left to your judgement.
Prices: what a part costs today
Where shops list a part, you see their offers sorted from the cheapest, next to a chart of how the price has moved. If you are in no hurry, set a price alert and you get an email when the part drops to the limit you chose.
FPS calculator: how many frames you will get
Pick a processor and a graphics card and the calculator gives an FPS estimate for a specific game at 1080p, 1440p and 4K. It is a model estimate, not a measurement on your machine, but it is enough to tell whether the pair suits your monitor before you spend anything.
Bottleneck test and upgrade advisor
The same calculator shows which of the two parts is limiting performance - the processor or the graphics card. The upgrade advisor goes one step further: tell it what you have now and it shows which part to replace first and how many FPS that would add.
Power supply calculator and ready-made builds
The power supply calculator adds up what your parts draw and shows the recommended wattage with headroom. If you would rather not start from a blank page, the ready-made builds by budget and purpose are a starting point you can open in the builder and change.
The Windows app
The app reads which parts are in the PC you already own, so you do not have to look them up and type them in. From there you can see what is worth upgrading first.