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In Firefox, the Power Mac completed the test 27 percent faster after its upgrade the Mac mini, 30 percent faster. The Photoshop test ran about 12 percent faster after going from 512MB to 1GB on both Macs. But while doubling the RAM from 512MB to 1GB also goosed performance in both tests on both systems, the improvement was not as dramatic. We did find a dramatic performance boost when we upgraded the Mac mini’s stock 256MB of RAM to 512MB. We then ran both the Photoshop and Firefox portions of our Speedmark test suite. To simulate real-world conditions, we tested with several apps open: iTunes playing songs from its library, Firefox displaying Apple’s home page, Entourage with a well-populated inbox, Photoshop with a 50MB file open, and iMovie running a tutorial. We then upgraded them both (the mini to 512MB and then 1GB, the Power Mac to 1GB) and retested. To find out what impact additional RAM has on performance, we tested two Macs: a 1.42GHz Mac mini with 256MB of RAM, and a 1.8GHz Power Mac G5 with 512MB. Macworld Lab Test: Bang for your RAM buck
#Mac mini ram upgrade warranty free
He is also the CEO of iFixIt, a PowerBook and iBook parts retailer.ĮDITORS NOTE: This story has been changed from its original version, to correct the formula relating the amount of free RAM you have to the amount of physical RAM you should have. Kyle Wiens has two 512MB PC2700 DDR SODIMMS in his PowerBook and wants more. Replacing RAM in your laptop or your Mac mini. My company offers online instructions for Apple has instructions for installing RAM on many of its desktops search for Fortunately, you can find that information online. I can’t give directions for installing RAM on every Mac out there.
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(Disclosure: my company sells RAM.) How do I install it? Even within the Mac community, it’s important that you buy RAM with a lifetime warranty. It’s best to buy RAM from Mac-specific companies. (OS 9 tolerated some hardware defects that OS X’s memory-management system will reject.) Bad RAM can lead to kernel panics and random application crashes. Macs tend to be pickier about good RAM than PCs, and OS X is particularly picky.
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If the chart is mostly yellow and red (active and wired), then you’re running out of RAM and may experience slowdowns.īargain-basement PC retailers may offer RAM that will work in your Mac-but I wouldn’t advise buying from those sources.
If the pie chart is mostly green and blue (representing free and inactive memory, respectively), then you’re in good shape.
Open it up and click on the System Memory tab (see “The Colors of RAM”). The simplest way to find out whether you’re overloading your RAM is with OS X’s Activity Monitor. Inactive (blue) Memory allocated to an open program but not in use at the moment. Free (green) Memory available for allocation.
Active (yellow) Processes using memory right now. Mean? Wired (red) Contents that must remain in physical RAM and can’t be paged out to disk. How do I know if I need more RAM?Īctivity Monitor is a great way to keep track of what applications are using your RAM (and whether it’s overtaxed). This process could take a second or two, resulting in that dreadful spinning beach ball. When you click on Mail in the Dock, the OS has to load it back into physical RAM and load that photo into virtual memory on your drive. OS X previously paged Mail out to disk, and you’ve been using Photoshop. Let’s say you decide to check your e-mail. So as soon as you start using virtual memory instead of RAM, memory access times slow A fast hard drive can write about 20MB per second. Paging out is slick, but there’s a catch-copying memory to disk is slow.