Mac os lion ram test
Read each of the pages for a description and how-to operate. 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.
1. Check How Much Memory You Have
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. 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.
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! Follow IntegoSecurity. The Mac Security Blog. This requires an Internet connection over Ethernet or Wi-Fi. If you're using OS X Lion v Published Date: Tue Nov 27 Yes No.
Character limit: Maximum character limit is Fortunately, with a little preparation right now, you can boot your Mac into Single User Mode and do a complete RAM test in the future. While you can run the necessary software in a fully-booted system, I recommend doing testing in Single User Mode where there are far less programs loaded in memory, and less chance of an important system component getting corrupted if your machine freezes or kernel panics — common symptoms of bad memory.
Memtest is a Unix command-line program that does the memory testing, and is the Mac equivalent of MemTest To run memtest on a new memory module, first shut down your computer and install the new chip. Once you see a black screen with white text, you can release the key combination. After all the system logging is done scrolling past, type memtest all 2 to test all memory two times.
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If your system locks up or freezes indefinitely during the test, you may have a bad memory module on your hands. Like Like. It just sits there…. Memorytest unter MacOs […]. In the process now of testing each ram chip indicidually, using "Memtest" http: The reason I have 2 and 2 is that the ram only goes to 1. So my options are either the […]. Can someone please walk me thru how to find them. Thanks so much in advance. Thanks for the article. I received a new 2.
MemTest for Mac OS X Tests your RAM
AHT ran fine on extended with no issues. Just running the version of memtest listed here in single-user mode; hopefully this is not a cpu issue…. I have installed the package on my Power Mac G4 dual 1. Any insight into what this code could mean would be very helpful and appreciated. What a great program! Thank you. Today I installed 2x2gb modules of DDR3 in a unibody 2. I just ran this in single user mode in but it will only address and test 3.
Bew — I have the same issue. Hi—Just ran across this while looking for information on memtest. Does anyone know if heat can be a problem in Single User?
Fans running full blast ought to be able to remove the heat generated by maxed-out CPUs, else you have a dud Mac Pro on your hands ;-. Thanks for this tool! I found the page a bit late, and had already purchased 4. Once it even did a kernel dump right to the video memory. Never seen that before or since. Simply, from the Finder: Sourceforge would host it for free. Hope it was worth the buck fifty, Scamaroni. Why would all these files not be available? Thanks for the package.