Mac benchmark online. In Safari, nothing to download.
Benchmark your Mac from the browser you already use. The free run tests processor, memory and graphics for 3 minutes and shows whether it keeps its speed.
Illustrative progress. Not a measurement.
Browsers
Safari and Chrome
Chips
Apple silicon and Intel
Run
3 min, or 9 min Deep
Reports
Score, slowdown, FPS
The same test a Windows PC gets.
The run is identical on every machine, so a Mac result can be compared with any other result, including your own next run.
- Every core, including efficiency cores
- The CPU stage loads every logical core the browser reports, performance and efficiency cores alike, for 60 seconds.
- Unified memory
- Apple silicon shares one pool of memory between processor and graphics. The memory stage measures its bandwidth and latency like any other machine.
- Graphics at a fixed size
- A fixed 3D scene and a path tracer load the graphics, which on a fanless MacBook Air is where heat usually shows.
- Safari or Chrome
- The run works in both. Results from different browsers are not directly comparable, so compare runs in the same browser.
Reading a Mac benchmark result.
Macs rarely crash under load; they slow down quietly. The report shows how much speed was kept, not just a peak.
Slowdown on a MacBook Air
A fanless MacBook Air slows once it warms up. Some slowdown is expected by design; the report shows how much.
MacBook Pro and desktops
Machines with fans should hold their speed. A large slowdown on one is worth a closer look.
Graphics smoothness
How evenly frames arrived. Uneven frames on a Mac often mean another app is using the graphics at the same time.
Memory pressure
The browser cannot see memory in use. Activity Monitor's Memory Pressure graph shows whether memory, not the chip, is the limit.
Illustrative progress. Not a measurement.
Hardware
What it needs. Three tiers, no fine print.
Minimum
Any Mac with a current browser
Intel Macs and all Apple silicon Macs complete the run.
Recommended
Plugged in, Low Power Mode off
Low Power Mode lowers the speed the Mac allows, and the result with it.
Optimal
The Deep run
9 minutes, long enough to warm a MacBook Air fully.
In short
Mac benchmark: the answer first
You can benchmark a Mac in Safari or Chrome with nothing installed. The run loads every performance and efficiency core, measures the unified memory's bandwidth and latency, and draws a fixed 3D scene and a path tracer, then shows whether the Mac kept its speed over each stage.
Reading your result
- Fanless and fan-cooled read differently
- A MacBook Air has no fan, so some slowdown once it warms is expected by design. A MacBook Pro or a desktop Mac with fans should hold its speed more closely.
- Keep to one browser
- Safari and Chrome give the page different limits, including how many threads it sees, so compare a run in Safari with another run in Safari.
- Memory pressure lives in Activity Monitor
- A browser cannot see memory in use. If a Mac feels slow and the run looks steady, the Memory Pressure graph is the next place to look.
What good looks like
The ranges, before you run it.
Overall score (provisional bands)
- 85 to 100
- Excellent (provisional)
- Fast, and it keeps its speed under long work.
- 70 to 84
- Strong (provisional)
- Comfortable for demanding work.
- 55 to 69
- Good (provisional)
- Fine for everyday and moderate work.
- 40 to 54
- Modest (provisional)
- Everyday tasks; heavy work will feel slow.
- Below 40
- Limited (provisional)
- Struggles with sustained work.
Slowdown under long work
- Under 8%
- Holds its speed
- Little lost over the run.
- 8% to 15%
- Normal
- Common on laptops and compact PCs.
- 15% to 30%
- Noticeable
- Long tasks run clearly slower than short ones.
- 30% or more
- Worth checking
- Often heat, dust or a low power limit.
Graphics smoothness
- 90% or more
- Smooth
- Frames arrive at an even pace.
- 75% to 89%
- Mostly smooth
- Occasional uneven frames.
- Below 75%
- Uneven
- Visible stutter is likely in motion.
What a browser cannot see
The honest limits, and where to look instead.
- How full your memory isA web page cannot see how much memory is in use. If the machine slows down with many apps or tabs open, check it directly.
- On a MacActivity Monitor, Memory tab: Memory Pressure at the bottom. Yellow or red means memory is the limit.
- Temperatures and fan speedNo browser can read a temperature sensor, so heat shows here only as speed lost over time.
- On a MacA free app such as Stats shows temperatures and fan speed.
- Storage speed and healthOpening apps and files depends on the drive, which this test does not touch.
- On a MacDisk Utility, then First Aid on your main drive.
Questions
Mac benchmark, answered
- Can I benchmark my Mac online?
- Yes. The test runs in Safari or Chrome on any recent Mac, with nothing to download, and measures processor, memory and graphics under load.
- Does it work on M1, M2, M3 and M4 Macs?
- Yes. It runs on every Apple silicon Mac and on Intel Macs. The report explains unified memory where it applies.
- Is it normal for a MacBook Air to slow down?
- Yes, to a point. A MacBook Air has no fan and lowers its speed as it warms. The test shows how much, which is useful when comparing two machines or checking a used one.
- Does it show my Mac's temperature?
- No. No browser can read temperature sensors on a Mac or a PC. The test measures lost speed instead.
- Is it the same as Geekbench?
- No. Geekbench is an app that measures short bursts. This test runs in the browser and measures whether the Mac keeps its speed under sustained load, which is what a hot Mac changes.
- Why does Safari show fewer threads than my Mac has?
- Safari limits how many workers a page can use, so the processor stage may load fewer threads than the chip has. The guide on the Safari thread cap explains what that changes and what it does not.