Is SystemCheck as accurate as 3DMark?

No, and it does not claim to be. 3DMark runs natively against the graphics driver; SystemCheck runs through a browser's WebGL2 implementation, which adds a translation layer and makes results sensitive to browser version and background activity. SystemCheck results are directional. For a defensible figure, use 3DMark.

Can SystemCheck show my GPU temperature like 3DMark does?

No. The web platform exposes no API for temperature, power draw, fan speed or VRAM size, so no browser-based tool can report them. If you need to see the thermal curve, you need a native tool.

Why use SystemCheck at all if 3DMark exists?

Access. 3DMark requires a Windows machine, a multi-gigabyte install and, for most of its tests, a purchase. SystemCheck needs a browser tab and about three minutes, which makes it usable on machines and operating systems where 3DMark is not an option.

Does 3DMark also measure sustained performance?

Yes. It includes a stress test mode that loops a scene and reports a frame-rate stability percentage, and it charts hardware telemetry alongside it. Sustained measurement is not something SystemCheck does and 3DMark does not. SystemCheck's difference is that it does it without an install.

Compare/Native synthetic GPU suite

12 dimensions · 6 where 3DMark is stronger

SystemCheck vs 3DMark

SystemCheck: a no-install read on what a PC holds under sustained load, and why it fell. 3DMark: when the number has to be defensible, line up with published reviews, or come with a real temperature curve. SystemCheck is not a substitute for it.

5 to us · 6 to 3DMark · 1 even

Run the test

SystemCheck

Browser stress test · free, no install

3DMark

Native synthetic GPU suite

Dimension by dimension

Names why performance fell

Yes: the CPU curve is classified (a single step, a steady slide, a sawtooth) and the report names the likely cause with its confidence statedSystemCheck

Partly: the stress test reports a frame rate stability percentage and a pass or fail, but does not name a causeSource: UL Solutions, checked 29 October 2026

Install required

No: opens in a browser tabSystemCheck

Yes: a desktop application installSource: UL Solutions (Steam store page), checked 29 October 2026

Platforms

Desktop and laptop browsers with WebGL2. No mobile in v1SystemCheck

Windows, macOS, Android and iOS; many tests and features are marked Windows onlySource: UL Solutions, checked 29 October 2026; UL Solutions, checked 29 October 2026

Price

Free to run; detailed report is a one-time paid unlockSystemCheck

Paid suite; a free Demo on Steam runs a subset of the benchmarks, without the stress testsSource: UL Solutions (Steam store page), checked 29 October 2026; UL Solutions, checked 29 October 2026

Measures sustained decay

Yes: decay across a 60-second sustained multi-core load (150 seconds on a Deep run, 10 minutes on Extended) is a primary output, measured from the level after the boost to the end of the run with the boost step reported on its own, and the curve's shape is classified to name the likely cause

Yes, in the paid editions: the stress test loops a scene and reports frame rate stability, worst loop over best, 97% to passSource: UL Solutions, checked 29 October 2026; UL Solutions, checked 29 October 20263DMark

Reads hardware sensors

No: the web platform exposes no temperature, power, fan or VRAM API

Yes: charts CPU and GPU temperature and clock speed, with the frame rate, during a runSource: UL Solutions, checked 29 October 20263DMark

Measurement precision

Directional: results move with browser, driver and background load

Runs natively against the graphics driver with no browser translation layer in betweenSource: UL Solutions, checked 29 October 20263DMark

Comparison database size

New product, small result history

Compares your score with results from other systems with the same CPU and GPUSource: UL Solutions, checked 29 October 20263DMark

Standing in reviews

New; no established citation history

An established reference regularly cited in hardware journalismNot verified3DMark

Test duration

3 minutes across 4 stages; the Deep run is 9 minutes across 8, and Extended 16.5 minutes with a 10-minute CPU stage

A benchmark run, or stress tests that loop to load the system for longer than a standard runSource: UL Solutions (Steam store page), checked 29 October 2026Even

Time to first result

Immediate: no download, purchase or setup stepSystemCheck

Requires installing the suite: 2 GB for the smallest test set, 9.8 GB for all testsSource: UL Solutions, checked 29 October 2026

Best suited for

A quick, no-install sanity check on sustained behaviour

Rigorous, repeatable GPU comparison and published review numbersNot verified3DMark

What each tool is

SystemCheck is a browser-based stress test. Its standard run is 4 stages (a 60-second sustained multi-core CPU load, a memory bandwidth and latency stage, a GPU raster load and a path-tracing load) in 3 minutes, with no install and no account for the core test. It reports throughput alongside decay and consistency over sustained load, rather than a single peak number, and it classifies the shape of the CPU curve to name why performance fell. It cannot read temperatures, power draw, fan speed or VRAM size, because the web platform exposes no API for any of them, and its results are directional rather than lab-grade.

3DMark is developed by UL Solutions. It ships a series of named tests (Time Spy, Fire Strike, Steel Nomad, Port Royal and others) each targeting a specific graphics API and workload class, and it compares your score with results from other systems with the same CPU and GPU. It is a paid product; a free Demo on Steam runs Steel Nomad, Steel Nomad Light, Time Spy, Night Raid and Fire Strike (Steam store page, checked 29 October 2026).

3DMark also includes a dedicated stress test mode that loops a benchmark scene repeatedly and reports a frame rate stability percentage (in the paid editions), and its hardware monitoring charts CPU and GPU temperature and clock speed alongside the run. This is a direct overlap with what SystemCheck measures, and 3DMark does it with real sensor data that no browser can access.

SystemCheck is not competing with 3DMark on precision. It competes on access: no install, no purchase, no Windows requirement, and a result in about three minutes from a browser tab.

Where 3DMark is stronger

These are the dimensions where 3DMark beats SystemCheck outright. Some are structural: a browser cannot reach hardware sensors at all.

3DMark reads real sensor telemetry (temperature and clock speed) during a run. SystemCheck fundamentally cannot, because no browser exposes those readings.
It runs natively against the graphics driver with no browser or translation layer in between, so its numbers are more precise and more repeatable than anything measured through WebGL2.
Its results database is enormous and searchable, so any score has a deep field of comparable systems behind it.
It is an established reference in hardware journalism, which makes its numbers directly comparable with published reviews.
Its dedicated stress test loop runs far longer than SystemCheck's 60-second sustained stage, which is a better probe for slow thermal saturation.

Where SystemCheck is stronger

It names why. 3DMark's stress test tells you whether frame rate held and shows the telemetry; SystemCheck classifies the shape of the fall and states the likely cause.
No install, no purchase, no Steam account. The test starts in a browser tab.
Runs on macOS and Linux, not just Windows.
Free to run, with payment only for the optional detailed report.
Roughly three minutes from click to result, including CPU as well as GPU stages.

Which should you use?

Use 3DMark if…

3DMark: when the number has to be defensible, line up with published reviews, or come with a real temperature curve. SystemCheck is not a substitute for it.

Use SystemCheck if…

Use SystemCheck when you want a fast read and cannot install software: a locked-down work machine, a laptop you are evaluating before buying, or a quick check after a driver update. It is also the easier option if you are on macOS or Linux, or if you want a combined CPU and GPU picture in one short run. It is also the one to reach for when the question is why a machine got slower: the report names the shape of the loss and puts the retest next to the run it is trying to beat.

Questions

Is SystemCheck as accurate as 3DMark?: No, and it does not claim to be. 3DMark runs natively against the graphics driver; SystemCheck runs through a browser's WebGL2 implementation, which adds a translation layer and makes results sensitive to browser version and background activity. SystemCheck results are directional. For a defensible figure, use 3DMark.
Can SystemCheck show my GPU temperature like 3DMark does?: No. The web platform exposes no API for temperature, power draw, fan speed or VRAM size, so no browser-based tool can report them. If you need to see the thermal curve, you need a native tool.
Why use SystemCheck at all if 3DMark exists?: Access. 3DMark requires a Windows machine, a multi-gigabyte install and, for most of its tests, a purchase. SystemCheck needs a browser tab and about three minutes, which makes it usable on machines and operating systems where 3DMark is not an option.
Does 3DMark also measure sustained performance?: Yes. It includes a stress test mode that loops a scene and reports a frame-rate stability percentage, and it charts hardware telemetry alongside it. Sustained measurement is not something SystemCheck does and 3DMark does not. SystemCheck's difference is that it does it without an install.

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