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Power Cost Estimator
Estimate annual electricity costs for your PC, Server, or TV.
Use Tool ➜TechCompare
PC Hardware Tools
Estimate power cost, convert RAM timings, and benchmark your GPU right in the browser.
3 tools in this category
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RAM Latency Calculator
Convert DDR3/DDR4/DDR5 timings (CL, tRCD, tRP, tRAS) into true latency in nanoseconds.
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WebGPU Benchmark
Stress-test your GPU right in the browser with real WebGPU workloads and get a performance score.
Use Tool ➜About PC Hardware Tools
TechCompare's hardware tools give you straightforward answers to the questions that come up when building or upgrading a PC. The Power Cost Estimator turns a wattage number into an annual electricity bill, the RAM Latency Calculator converts DDR timings into true nanoseconds so you can compare kits honestly, and the WebGPU Benchmark produces a reproducible GPU score directly in the browser.
Use this collection alongside the Data and Screens tools when spec'ing a new build: nail the GPU performance with the benchmark, size the PSU and running cost with the power estimator, and validate your memory kit's real-world latency before you buy. Every tool is free and runs locally — no drivers, no installers, no accounts.
Frequently asked questions
How do I calculate my PC's annual electricity cost?
Multiply average draw in watts by hours used per day, then by your local kWh rate. The Power Cost Estimator handles this automatically for PCs, servers, and TVs, and lets you set an idle/load mix so gaming machines (which spend most of their time idle) don't get over-counted.
Is DDR5-6000 CL30 really faster than DDR5-5600 CL28?
The RAM Latency Calculator shows true latency in nanoseconds: DDR5-6000 CL30 works out to 10.0 ns, DDR5-5600 CL28 also to 10.0 ns — effectively identical. In practice DDR5-6000 wins because its higher bandwidth benefits most workloads, but tight timings at lower frequency can match it for latency-sensitive tasks.
What does a WebGPU Benchmark score actually measure?
Floating-point throughput on compute shaders, run against your live GPU. It's a rough analog of the synthetic scores from native tools, useful for apples-to-apples comparison between devices running the same browser. Running it on two PCs and comparing the ratio tells you the real performance gap on that workload.
Do these tools need an installer?
No. Everything runs in the browser, uses no external services, and stores nothing on your device. The WebGPU Benchmark requires a browser with WebGPU enabled (Chrome, Edge, desktop Safari 17+); the calculators work in any browser released in the last few years.
Can I compare two GPUs without owning both?
Run the WebGPU Benchmark on the machine you have and compare against someone else's published score. The test uses a fixed workload, so identical scores imply roughly identical throughput regardless of the browser or platform.