APPLE iMac 21.5" Late 2015 PRODUCT DESCRIPTION:
It's worth noting that this is the more literal implementation of 4K in the new 21.5-inch iMac. The display resolution is 4,096 pixels wide, rather than the more common consumer version (sometimes called ultra-high definition or UHD), which has a just slightly lower resolution and is 3,840 pixels wide. That says to us that this system is targeting professional (and high-end enthusiast) photo and video users, who may shoot at that higher version of 4K resolution.
Your big, fancy 4K television set, and every other 4K computer we've seen to date, all adhere to the more consumer-targeted 3,840x2,160 version of 4K. The 4,096x2,304 on this new iMac screen will play any of your 4K content just fine, although the tiny difference in native resolution can have a small scaling effect, which we really only noticed when viewing 3,840-resolution test patterns.
The big secret about 4K is that a lot of people buy a 4K TV, monitor or computer, without really planning on viewing much 4K content on it. It's just the latest spec upgrade to strive for, and most of your video content, and even video games, aren't going past standard 1,920x1,080 high-definition anytime in the near future.
|Model Number||iMac 21.5" Late 2015|
|Processor||Intel Core i5|
|Harddrive Speed||7200 RPM|
|Optical Drive||DVD Writer|
|SSD||1 TB SSD|
|Graphics-Type||Intel Iris Pro Graphics|
|Dimensions (W x D x H)||210 x 455 x 380 (mm) 8.3 x 17.9 x 15 (in)|
|Bluetooth||4.0 wireless technology|
|Warranty||1 Year Official Brand Warranty|