Sum up TDP values for all PC components to find your total system power draw. Enter CPU, GPU, RAM, storage, and fan power to calculate total thermal output.
Every component in your PC generates heat measured in TDP (Thermal Design Power). Knowing the total TDP of your system is essential for choosing the right PSU, designing adequate cooling, and estimating energy costs. This calculator sums up all your component TDPs into one total.
The CPU and GPU dominate power consumption in a gaming PC, but RAM, storage drives, fans, and peripherals all contribute to the total. A typical gaming build draws 350-600W under full load, while high-end enthusiast systems can exceed 800W with overclocked components.
Enter TDP values for each component group and get an instant total. This figure feeds into PSU sizing, cooler capacity planning, and even room cooling calculations for dedicated gaming setups.
Gamers, streamers, and content creators benefit from precise total tdp data when optimizing their setup, planning purchases, or maximizing performance and value. Bookmark this tool and return whenever your hardware, games, or streaming requirements change.
Total TDP is the foundation for PSU sizing and cooling design. Without knowing your system's total power draw, you're guessing on these critical components. This calculator provides an accurate sum to drive informed decisions about power delivery and thermal management. Instant results let you compare different configurations and scenarios quickly, helping you get the best performance and value from your gaming budget.
Total TDP = CPU TDP + GPU TDP + RAM Power + Storage Power + Fan/Peripheral Power
Result: 470W total TDP
CPU (125W) + GPU (300W) + RAM (10W) + Storage (15W) + Fans/Peripherals (20W) = 470W total system TDP. This is the total power the system consumes under full load and the heat it generates.
In a typical gaming PC, the GPU accounts for 50-65% of total TDP, the CPU for 20-30%, and everything else combined for 10-20%. This distribution shows why GPU and CPU choices dominate PSU sizing decisions, while RAM and storage are secondary considerations.
Manufacturer TDP specs provide good estimates, but real power draw varies by workload. Gaming loads rarely push both CPU and GPU to 100% simultaneously. Software tools like HWiNFO read actual power sensors on modern motherboards, giving real-time measurements that can refine your estimates.
Every watt of TDP becomes heat that must be removed from your case. Higher total TDP means more aggressive fan curves, louder operation, or more expensive cooling solutions. Choosing efficient components (lower TDP for the same performance) leads to quieter, cooler systems.
TDP is the thermal design power — the maximum heat output under sustained load. Actual power consumption is closely related but can spike above TDP during transient loads. For planning purposes, TDP is a reliable baseline.
Use TBP (Total Board Power) or TGP (Total Graphics Power) when available, as these include the entire card's power draw including VRAM and VRM circuitry. TDP sometimes refers only to the GPU chip itself.
Standard 120mm case fans draw 1-3W each. High-performance fans draw 3-5W. RGB fans add 1-2W for LEDs. An AIO cooler pump adds 3-8W. A system with 6 fans and an AIO might use 20-30W on cooling alone.
No, the monitor has its own power supply and draws from the wall separately. Only components powered by your PSU contribute to system TDP. External USB devices that draw power from the PC do count, however.
At idle, modern systems use 30-80W depending on components. CPUs and GPUs have aggressive power-saving states that dramatically reduce idle draw. Total TDP represents the worst-case scenario under full load.
Wi-Fi cards draw about 2-5W and Bluetooth about 1W. While small individually, these add up with other minor components. Including them gives a more accurate total, especially if you have many PCIe cards and USB devices.