Mac video card stress test

The car chase used in this test is designed for a PAL-standard of 25 fps. To prevent the scene being displayed much too slowly on old graphics cards or much too fast on the latest hardware, CINEBENCH estimates the graphics card performance so the scene will maintain a consistent duration approximately 30 seconds. Faster graphics cards will display the scene much smoother than slower ones. If a graphics card can display a higher frame count than the original scene speed, subframes will be displayed and properly measured. This doesn't fully reflect the polygon count processed by the graphics card, which is between , and 1 million polygons.

The difference results from several factors. Graphics cards are incapable of drawing quadrangles, so these must be converted to triangles. This roughly doubles the polygon count. Furthermore, multiple materials one on each side of the triangle or transparencies require the scene to be drawn twice. Other factors, including using multiple materials and transparencies in combination require a triangle to be drawn multiple times.

Depending on the camera angle, the graphics card may be displaying several times the number of polygons reflected by the basic scene information. Unfortunately the system contribution cannot be specifically measured. The same graphics card in a faster computer will typically give better results than in a slower system.

The overall performance depends on various factors including processor, memory bus and chipset.


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All geometry, shaders and textures are stored on the graphics card prior to measurement, and no code is loaded during the measurement process. This minimizes the system influence, but unfortunately cannot eliminate it entirely.

Stress Testing the 2018 i7 6-core Mac Mini!

Graphics card drivers can greatly affect the benchmarking performance. On Macintosh systems, drivers are usually installed automatically with the OS and cannot be modified. On Windows systems, it's possible to install different drivers, which may offer speed or quality improvements. Driver performance can be directly compared if and only if no other system factors are changed. If you run the benchmark, upgrade the driver and test again, the results can be compared directly. This does not necessarily mean that the result is reproducible on all other systems. Make sure to always test your graphics card with a proper driver and ensure that all older drivers have been properly uninstalled.

In some cases, driver upgrades aren't fully applied because the prior driver is still present. On Windows systems, you may not have the correct driver installed for the graphics card. This driver doesn't support the necessary features for the test. After installing the proper driver for your graphics card, make sure the card name is displayed in the GFX-Board field. In some cases you may need to manually uninstall the existing driver, because simply updating or installing new ones may not work.

Background tasks can significantly influence measurement and create diverse results. It's always a good idea to shut down all running programs and disable any virus checking or disk indexing, but it's impossible to eliminate all background processes. Modern operating systems perform various background tasks that cannot or should not be disabled, even though they could have a minor influence on the results. As explained above, it's impossible to disable every background task of the operating system.

These tasks are one factor that may have a slight influence on measurements. Also, modern computers and graphics cards dynamically adjust clock speeds based on environmental conditions like power and temperature. For instance, processors will reduce clock speed when running too hot to allow for cooling and prevent damage. With many modern processors the reverse is also true. They are able to overclock themselves when the temperature is low enough. So a system freshly started in a relatively cool environment will typically run faster than the same system that has been performing benchmarks for several hours in a heated office.

The tests have been modified greatly and optimized to better measure system performance on increasingly powerful hardware. The scale has been significantly altered to ensure that results with different versions are not compared. Supported Systems. For a 4-core CPU that has 8-cores total with the virtual cores included, the command becomes:. To abort the test at any time, type " killall yes " followed by enter and quit Terminal. Chances of it failing such a simple test are slim, so if you want to step it up, try the following:.

HOW DOES CINEBENCH WORK?

Prime95 was created to help find new Mersenne prime numbers, but so many people started using it to stress test their CPU's that the app's creators built a dedicated stress test into the app. Called the "Torture Test," it certainly lives up to its name and taxes your CPU and subsystems to its maximum capabilities.

Running the Torture Test for several hours hours recommended by the communities will prove, without a doubt, your CPU is either a number crunching monster with an endless appetite or ready for recycling heaven. Without it, you'd just be staring at a blank screen. Of course, games can't live without it; and, if you use any of the Adobe, Final Cut or other graphics intensive apps, then you most certainly need it. It runs hotter and consumes a lot more energy, so the chances of it failing are much greater. How will you know if your GPU is able to provide you with the power you need when you need it?

Here are a few options:.

As with the CPU benchmarking, these tests are pretty short, so it would have to be run a few times to get an idea of the performance and cooling. Here are a few that do a good job of benchmarking your GPU: Cinebench , Geekbench , and LuxMark. Read each of the pages for a description and how-to operate.


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There's really only one application that comes to mind for this: The "basic" and "extreme" presets can be used, but a "custom" option is also available that really lets you go all out. The test will render game scenes at the quality and resolution you set; a higher quality and resolution will mean more work for your GPU and thus a better stress test.

You will have to re-start the test when it finishes to get a few loops out of it the free version , but at insanely high settings your GPU will probably take a long time to finish a single run anyway. There are utilities that can read out and test these sensors, but only Apple and their Diagnostics really know what the correct value ranges are and if a sensor passes or fails a test.

However, if you'd like to take a closer look at the sensors to make sure their measurements are what you want them to be, or just to satisfy your curiosity, there are a few options available. A lot of continuous checking is going on inside your Mac to make sure all these readings are what they should be, and while you typically never need to know these readings, they can help you verify your Mac's hardware is working properly.

The one application that can read out all these sensors is TechTool Pro. It is a pretty comprehensive system test suite that includes sensor testing. We've covered pretty much all the internal components of your Mac, but there are a few things that are often overlooked in system testing. These are as follows:. If there is an issue with your mouse or trackpad, you will find out during normal use, so I won't suggest any tests for those. The same goes for the hinges of your laptop screen.

The one thing I have not covered in this article is your Mac's cooling system. If your Mac survived all of the above stress tests without suddenly shutting down or bursting into flames, it's safe to say your cooling system is good to go. However, there is a big difference in keeping a system cool enough to keep it from overheating and keeping it cool enough to make it last. The cooling system is more than just the fan s , it also involves heatsinks, thermal paste, thermal pads and airflow. For now, to keep your Mac running nice and cool, open it up and clean out the dust.

Take the proper ESD precautions and go as far as you're comfortable with taking your Mac apart. Mac Pro users are probably not new to this, but most laptop users likely will be. For laptops, it's typically enough to remove the bottom cover and carefully blow out the dust from the boards, fan s and heatsinks.

GpuTest 0.2.1 for Mac OSX Released

More airflow results in a cooler Mac. You've done it! The CPU, GPU and RAM tests mentioned in this article go far beyond what even the diagnostics at Apple will do, so if your Mac passed them all with flying colors, I have no doubt it can handle whatever workload you throw at it.

OK, I admit, I just like to see my Macs break a good sweat once in a while for no good reason. Knowing your Mac can handle even the hardest work is a good feeling. There are so many people out there using just a fraction of their Mac's power for fear they might crash it or it runs too hot. Your Mac is not a delicate flower, it's a powerful number cruncher and even if you only use it to check Facebook or work on a Pages document, it's nice to know it can handle an afternoon of RAW photo editing or a Final Cut Pro montage of your niece's graduation when needed.

UNIGINE Benchmarks

Most of you will probably agree that you'd rather have the power and not need it, than need it and not have the power. Have something to say about this story? Did you run all these hardware tests on your Mac? It's Ok to boast, let us know how your Mac performed in the comments below!

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