With the Batman: Arkham City game from Feral, we often have to creep up slowly to a MacBook’s native resolution, with framerates dropping down into the unplayable level as we do. ![]() Modern Mac action games presented no problems to the iMac Retina 5K. And that’s including the Mac Pro (Late 2013) which played out at 87 fps in the same test. Stepping up to the current version 15 of Cinebench, the iMac’s 91.7 fps put clear space between it and every other Mac we’ve tested in the last few years. That’s fractionally behind the 48.2 fps result of our benchmark MacBook Pro. We started with the pro workstation test of graphical horsepower, Cinebench 11.5, which returned a result of 45.1 fps in its hardware-accelerated OpenGL test. That 2560 x 1440 resolution is the same size as the previous 27-inch iMac models, and so the true 218 ppi pixel density appears to the user like the 109 ppi desktop of the non-Retina iMac – but with all screen fonts and graphics effectively rendered much sharper. So here the 5120 x 2880 pixel counts are rendered on-screen like a 2560 x 1440-pixel display. Read aboutĪs with all other Apple products with Retina-class displays, the iMac display is used in HiDPI mode, where the native horizontal and vertical resolutions are exactly halved as far as the user is concerned. [A new iMac may be set to launch this summer. If you want to max out the spec with best CPU, GPU, RAM and storage, you’ll need to get ready to hand over £3519 for what promises to be the most irresistible all-in-one available anywhere. Substituting the 4.0 GHz processor brings the price to £2199, and the higher-spec AMD graphics another £200 again. Price of the iMac with Retina 5K display starts at £1999 in the UK. But it does conveniently bond two existing 10 Gb/s full-duplex channels within each cable into a single high-speed 20 Gb/s line. Thunderbolt 2 doesn’t deliver any more net speed than the original Thunderbolt port. Other specifications for the iMac Retina 5K remain the same as last October’s refresh, although the two Thunderbolt ports have also received a welcome upgrade to Thunderbolt 2 standard. The R9 series represents AMD’s top consumer graphics cards for desktop PCs, but look carefully for the ‘M’ prefix here which denotes that this is a mobile processor, integrated on to the logic board and originally designed for high-end laptops. Creative professionals on a budget, whether editing photos or videos, will also find plenty to like here, and at a sub-£2000 price point considerably more affordable than a PC workstation and separate 5K UHD monitor. More than just a great display, the iMac Retina 5K has a well-balanced computer driving it, with plenty of performance to power through games and any everyday task. Meanwhile the few Windows PCs that have exceeded full-HD resolution displays are hamstrung by an operating system that cannot consistently cater for the tighter pixel pitch. While the rest of the PC industry is still issuing low-grade and low-resolution displays with its PCs and laptops, Apple has spotted a key area for improvement and continues to raise screen quality to new heights. That was true before it gained an ultra-high resolution display, and it’s quite literally doubly true now. ![]() There is no desktop computer like the iMac. Hard to return to lower resolution monitors after using an expansive Retina-class panel.
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