iMac Graphics Update
iMac Graphics Update 1.0 for Mac can be downloaded from our software library for free. Our antivirus analysis shows that this Mac download is virus free. The latest setup package takes up 705 KB on disk. The actual developer of this free Mac application is Apple Inc. The software lies within System Tools, more precisely System Optimization.
From the developer:
iMac Graphics Update fixes an issue that may cause iMac computers to become unresponsive when viewing certain very large JPEG images.
If you're using OS X Yosemite v10.10.3 and one of the following iMac models, viewing certain very large JPEG (.jpg) images in the Finder or Preview can cause your iMac to briefly stop responding, display a black screen, and restart to a message that your computer restarted because of a problem.
You may want to check out more software for Mac, such as iMac Graphics Firmware Update or iMac SuperDrive Update, which might be similar to iMac Graphics Update.