The Simple Performance Equation: More Memory = A Faster Computer. The 32GB VisionTek Memory Upgrade Kit is the ideal performance upgrade for iMac machines that can take up to a maximum of 32GB of RAM. Maxing out your memory is the most cost-effective, easy DIY install solution to dramatically speeding up file transfers, app launches, and many other memory intensive tasks. Every VisionTek memory module is test certified to the JEDEC standard for assured speed and reliability. For peace of mind ownership, the kit comes backed by our Limited Lifetime warranty. Make your iMac better than new with VisionTek!