My spouse has a 2010 iMac that has become difficult to use, but it still has a 2.7 GHz Intel i5, a 1 TB hard drive, and 4 GB of RAM. I found compatible DDR3 memory for around $30 and could upgrade it to 16 GB myself. For someone completely new to Linux, would Zorin OS or Linux Mint be the better choice? The computer would mainly be used for web browsing and basic word processing, and it will also be a learning project for me and my daughter.
5 Answers
Linux Mint XFCE would be my first choice. It has worked well on several computers from around that era, and the extra RAM should help. The original hard drive will probably be the biggest source of sluggishness, so replacing it with an SSD would make a much larger difference than changing between these distributions. On an iMac, though, reaching the drive can require removing the display, so it may be best saved for a later project.
Both choices are based on similar Linux foundations, so the practical difference may come down to hardware support and which interface you prefer. Some people have had better results with Mint on older Apple hardware, while others have run Zorin successfully. Make a live USB first and test Wi-Fi, sound, graphics, and whether the internal drive is detected before installing.
Zorin should run, but older iMacs can sometimes have graphics-related crashes, especially with applications that use more visual effects. Mint XFCE is a safer lightweight option. If you want an even leaner desktop, Lubuntu is another possibility, though Mint XFCE is probably the most beginner-friendly of these choices.
Upgrading the memory to two matching 8 GB modules is a good plan. Avoid mixing unrelated memory kits when possible, and verify the exact speed and type supported by the iMac before ordering. Sixteen gigabytes should be more than enough for browsing and office work; an SSD would be the next major performance upgrade.
Either distribution should be capable of running on that hardware. I’d lean toward an XFCE edition, such as Linux Mint XFCE or a lightweight Zorin edition, because XFCE uses fewer resources while still providing a familiar, customizable desktop.

That makes sense. We’ll keep the initial installation simple and consider an SSD upgrade later if we end up using the computer regularly.