Full system
Standard
CPUAMD Ryzen 5 7535HS
GPUNVIDIA GeForce RTX 2050 Mobile
Free online PC stress test · version 1.2
Stress test
your PC
online.
Run a free PC stress test directly in your browser. Test CPU and GPU performance, check memory and browser-accessible VRAM, and measure stability under sustained load—no download required.
No account needed
Runs on your device
Stop at any time
PC score86Excellent
Example PC
Ryzen 7 7800X3DGeForce RTX 4070 Super
High-quality run
CPUSingle / Multi-core
92
GPUCompute / Graphics
88
VRAMTransfer / Allocation
81
PERFORMANCE STABILITY98.4%
Warm-upFull loadComplete
GPU APIWEBGPU
Run time01:00
01Runs on your deviceThe CPU, GPU and memory test workloads run directly in your browser.
02Clear test resultsEvery report includes raw measurements, test settings and the workload version.
03Private by defaultNo account, personal profile or software installation is required.
04Free, shareable reportsEvery PC stress test report is free to open, compare and share.
Recent public stress tests
The latest PC stress test results.
Recently completed public benchmarks and stress tests. Scores use the latest calibrated scale when enough comparison data is available.
Full system
Standard
CPUAMD Ryzen 7 8700F
GPUAMD Radeon RX 9060 XT 16 GB
Full system
Standard
CPUAMD Ryzen 5 8400F
GPUAMD Radeon RX 9070 GRE
Full system
Standard
CPUIntel Core i7-6770HQ
GPUNVIDIA GeForce GTX 960M
Full system
Standard
CPUAMD Ryzen 9 3900X
GPUAMD Radeon RX 5700
Full system
Standard
CPUAMD Ryzen 5 1600
GPUAMD Radeon Pro 5500 XT
Full system
Stress
CPUamd ryzen 7 7445 HS
GPUAMD Radeon 740M
Full system
Standard
CPUAMD Ryzen 5 1600
GPUAMD Radeon RX 5500 XT
Compare PC configurationsThe leaderboard groups matching CPU and GPU combinations, making real-world benchmark and stress-test results easier to compare.
View leaderboardCPU and GPU stress tests
Stress test your CPU, GPU and memory online.
Run CPU and GPU stress-test workloads, measure memory performance and check whether your PC remains stable under sustained load. Every result includes raw measurements, test settings and the workload version.
CPU / 01
CPU stress test: single-core and multi-core
Integer, floating-point and cache workloads run first on one worker, then across the logical CPU cores reported by your browser. Longer tests repeat the workloads to measure sustained CPU performance.
- Measures
- Ops/s · Stability
- Method
- Web Workers
GPU / 02
GPU stress test: compute and graphics
WebGPU runs a sustained, versioned compute workload designed to measure graphics performance over time. If WebGPU is unavailable, compatible browsers can run a separately scored WebGL 2 graphics test.
- Measures
- Shader work · FPS
- Method
- WebGPU · WebGL 2
VRAM / 03
VRAM stress test: transfer and allocation
Safe, size-limited GPU buffers measure transfer speed and allocation stability. The test reports only the memory successfully accessed by the browser and does not claim to detect total physical VRAM.
- Measures
- GB/s · Allocated MB
- Method
- Limited allocation
Stability / 04
PC performance under sustained load
Repeated performance samples track throughput, frame times and variation, helping you identify performance drops or inconsistent results during a longer stress test.
- Measures
- p95 · Variation
- Method
- Stability analysis
PC stress test modes
Choose a quick benchmark or full PC stress test.
Quick mode checks basic performance, while longer CPU and GPU stress tests collect more samples and make performance drops easier to identify.
~20seconds
Quick PC performance test
A fast CPU and GPU benchmark for checking browser compatibility and everyday system performance.
Start quick PC test →RECOMMENDED
02
~60seconds
Standard PC stress test
A balanced CPU and GPU stress test with enough samples to evaluate performance and short-term stability.
Start PC stress test →3+minutes
Extended CPU & GPU stress test
Apply sustained CPU and GPU load to identify inconsistent performance, throttling symptoms and performance drops over time.
Start extended stress test →
Transparent PC stress testing
See how the stress tests work ↗
What an online PC stress test can—and cannot—measure.
Our PC stress test measures browser-visible performance and stability under sustained load. It cannot reliably access temperatures, clock speeds, fan speeds, power consumption or total physical VRAM.
Can
Compare matching PC stress test results when the workload version, browser graphics API, test mode and duration are the same.
Can
Measure CPU and GPU consistency while your processor and graphics hardware perform real, sustained workloads.
Cannot
Read temperatures or clock speeds because standard browser APIs do not provide reliable hardware monitoring data.
Cannot
Detect total physical VRAM because the result shows only the amount of graphics memory successfully tested by the browser.
PC stress test FAQ
Questions about stress testing your PC online.
The CPU and GPU workloads run directly on your device. For accurate comparisons, use the same browser, graphics API, test version and stress-test duration.
See how the stress tests workHow can I stress test my PC online?
Choose the full-system, CPU, GPU or VRAM test, select a duration and click “Start PC stress test.” The workload runs directly in your browser without requiring a download or account.
What does the CPU stress test measure?
The CPU stress test runs repeated integer, floating-point, cache and memory workloads using one browser worker and then multiple workers. It measures throughput and performance consistency under sustained load.
Does the PC stress test also test the GPU?
Yes. Compatible browsers use WebGPU for sustained GPU compute workloads. When WebGPU is unavailable, a separately scored WebGL 2 graphics test may be available.
Is the online PC stress test safe?
The test creates sustained CPU and GPU load, so fan speed, temperature and power consumption may increase. You can stop the stress test at any time using the visible Stop control.
Can the stress test detect overheating?
Not directly. Browsers cannot reliably read CPU or GPU temperatures. The report may show declining performance or instability, but dedicated monitoring software is required to confirm overheating.
Does the VRAM stress test detect total VRAM?
No. It measures transfer bandwidth and a bounded allocation available to the browser, not the graphics card’s total physical memory.
Why does my PC stress test score change between runs?
Cooling, power mode, drivers, browser version, background applications and tab visibility can affect performance. Run multiple tests under similar conditions for a fair comparison.
How long should I stress test my PC?
A quick test is useful for basic compatibility checks, while a standard test provides a better performance overview. Use the extended stress test when you want to observe sustained performance and consistency over several minutes.
Free PC stress test online
Start PC stress test
Ready to stress test your PC?
Choose a CPU, GPU, VRAM or full-system test and select how long it should run. Nothing starts until you confirm.