Should You Buy A SSD For Your Mac?

SSDs, short for "Solid State Drives", were only a few years ago out of the price range of consumers and their personal computers, and were used primarily by business users and computer enthusiasts. In 2013, however, SSDs are becoming increasingly affordable and are a viable option for storage on personal computers - in particular,  laptops, as they are sensitive to power consumption and physical wear and tear.

upgrading macbook ssd

This article will explain to you the pros and cons of installing an SSD in your Mac, and ultimately whether it's worth the money. For those of you who are just looking for our top product recommendations, see the table below. If you're interested in reading about the benefits and comparisons of an SSD, jump below for our in-depth article.

Do I Have An SSD Already?

So, which Macs can an SSD be installed in? It's an important thing to know, as there's no point in reading this article and learning all about SSDs if you can't even install one in your Mac. Or if your Mac already has an SSD built-in, but you don't know it!

Basically, any Mac that has a user-replaceable hard disk can have a 3rd party SSD installed in it. These include the Classic MacBook Pro, the white Polycarbon MacBook, the Mac Mini and the iMac. Therefore, if you own one of them, this article is for you. As for the Retina MacBook Pro and the MacBook Air, if you don't already, you'll be pleased to know that they already have SSDs pre-installed, standard!


Cost is quite possibly the biggest factor you'll have to weigh up when deciding whether to buy an SSD for your Mac or not (and if so, which one).

A few years ago, SSDs that were little over 100GB in size cost the better part of a grand in price. Nowadays, however, 128GB SSDs barely cost more than their 128GB HDD (mechanical hard disk) counterparts. It's only when you get up to 512GB and beyond that, the SSD pricing begins to pull up and away from HDD pricing.

Therefore, the less space you use, the more economical and practical it is for you to get an SSD for your Mac. Don't know how much space you'll be needing? Then read on, and we'll find out how much you'll most likely need!

How Much Space Do You Need?

One good indicator of how much hard drive space you'll need is how full your current hard drive is. Finding this out is relatively easy, simply download iStat Pro freely from MacUpdate here.

Once it is installed on your Mac's dashboard, have at the "disks" section of the widget. Unless you have more than one hard drive installed in your Mac, or have a disk, external drive or memory stick plugged in, a single drive should be displayed. Beneath the name of the drive, there will be two numbers, One marked "U" (for "used") and one marked "F" (for "free".

Ignore, the "F" digits, and check out the "U" ones. This is how full your hard disk is. Once you've noted it down, read on to the next section, to see what sized SSD you'd be looking at if you decide to buy one.

SSD Sizes

There are four standard sizes of Solid State Drives: 64GB, 128GB, 256GB and 512GB. Although the 64GB size is pretty irrelevant these days, due to its small size and the fact that it only costs $20-$30 more to get a 128GB one, which is double the size. So in this article, we'll just look at the latter three models.

When thinking about which SSD size to get, you should look at the amount of space you're currently using on your current hard disk and round it up a bit - Maybe 50-100GB, as it's good to have a bit of extra space on your SSD, in case you need it later on. Not to mention the fact that a full or almost-full drive will perform more slowly that one with plenty of free space. So, if you've got 70GB used up, for example, the 128GB SSD model would be a good choice. If you had 120GB used up, the 256GB model would be the best choice. Or if you had 300GB used up, the 512GB model would be the best option.


The primary reason people buy SSDs is because of the speed. Unlike HDDs, which use a spinning platter much like a DVD to store data, SSDs use electronic circuits to achieve the same goal. SSDs most closely resemble USB thumb drives and SD cards, in the way that they use electronic circuits with no moving parts to store data. SSDs are, however, much faster than USB sticks, as they use higher quality components and aren't slowed down by the sluggish USB interface. So, exactly how much faster are SSDs than traditional hard drives with spinning platters?

Depending on the speed that the platter spins at, traditional hard disk drives usually have a write speed of anywhere between 50 and 120MB/s. High-quality SSDs, on the other hand, are almost always above 200MB/s, and the best ones can exceed 500MB/s. This means that you can expect the average SSD to be roughly double as fast when writing data as the average HDD and in some cases more. But when will you notice this speed increase, while using your Mac?

Since SSDs read and write data faster, tasks on your Mac that require it to read and write data will be faster. These include saving files, opening files, loading games, opening applications and starting up/shutting down. 


Having no moving parts, SSDs are very durable, much more durable than regular, mechanical hard drives. This won't be a huge advantage if you use a desktop Mac, such as an iMac or Mac Mini. However it's a significant advantage in the case of MacBooks, as you'd no longer have to worry about your Mac's hard drive being damaged if you drop the computer or subject it to sudden movements.

Traditional HDDs are quite sensitive to shock damage, as the head (the arm that reads the platter) can go off-course and scratch the platter, resulting in corruption of the data stored on it. SSDs, however, can be bashed around quite a lot without getting damaged, one of the reasons that they have been used in portable devices like cameras for so long.


Due to the fact that SSDs have absolutely no moving parts, they're dead silent. This makes your Mac quieter in general, especially when preforming hard drive intensive tasks, such as copying large files. While you might not appreciate the silence of an SSD over a traditional HDD during everyday use, you will if you ever do things like leave your Mac on overnight to download a large file, or to do some other task - your Mac will be 100% silent unless the fans spin up.

You also may find, if you happen to own a MacBook, that the computer won't vibrate as much, due to the fact that most of the vibration of the case would have been caused by the mechanical hard drive's platter spinning.

Less Power Consumption

Yet another secondary advantage of SSDs having no moving parts is the fact that they don't use up as much power. While this doesn't matter much when it comes to desktop Macs, it's a note-worthy advantage when it comes to MacBooks (which SSDs are more commonly found in).  he interesting thing is that SSDs neither read nor write data more energy-efficiently than HDDs, so how do they manage to be more energy-efficient overall?

Whilst SSDs don't read/write more efficiently than HDDs, they do perform the tasks faster. This means that the SSD will finish the task earlier than the HDD, and thus have more idle time, being idle consuming less power than reading or writing data. However, this advantage doesn't always show up in benchmark tests, as during the course of most power efficiency tests both the drives would be reading or writing data constantly for a set period of time.

In the real world though, the SSD will always read or write for shorter periods, due to the fact that it is significantly faster. Therefore the Solid State Drive is more energy-efficient than the mechanical Hard Disk Drive.

Our Recommendations

Samsung 860 EVO

Starting at $69.99, the 2.5 inch SATA III device offers insane storage of up to 4 TB! Not just that, it also offers speeds of up to 520 MBs/s. With its 5 years warranty, it is a no brainer why it makes it in our recommendations.

Crucial MX500

Starting at $49.99, its slightly cheaper than Samsung 860 Evo, offering storage of up to 2 TB! It also offers speeds of up to 560 MBs/s. Unfortunately, it does not include any warranty, so if you are looking to spend a little less, this is a great option, but, you will need to be careful with it.

Western Digital Blue 3D

They say when you use Western Digital once, no other brand is good enough. That is certainly true with this SSD. Starting at $49.88, it offers storage of up to 4 TB! It also offers speeds of up to 560 MBs/s, and not just not that, it even offers a 5-year warranty! A device worth the price. This SSD easily comes at par with all the high-end SSDs on the market. MacInfo recommends.


If after reading the points above you have decided that it's worth the money to buy an SSD for your Mac, feel free to check out the drives mentioned. Did you enjoy your purchase? Let us know your feedback in the comments!

Mike Roberts

Hi, my name is Mike and I made this site to document all the helpful tips and tricks that I've discovered using various Apple Macs and other Apple products over the years, as well as to provide more general guides in relation to using the internet. I've been obsessed with Apple products ever since I could afford my first iPod, and am somewhat of a fanboy (you might have guessed). For me, the simply work without any fuss, issues or errors. I can rely on their products. The build quality is excellent and I even have several, several-year-old Macbooks in my wardrobe that are still humming along fine (just a bit slower). You can contact me personally using the form on this page.

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  1. I upgraded the hd to an ssd on my win 10 pc and have never been happier with the performance, I now purchased my first Mac a Mac mini and clearly eyeing an upgrade to an ssd. I purposely got a 2012 model since based on forum users this can be upgraded painlessly compared with the new 2014 model which is next to impossible to upgrade.