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At AMD's Future of Compute event in Singapore, Samsung announced that all of their Ultra HD monitors released in 2015 will support FreeSync. The adaptive refresh rate technology will allow gamers to achieve smoother gameplay at 4K when frame rates drop below the display's native refresh rate, making 40 FPS gaming seem just as smooth as 60 FPS.
Samsung is the first company to officially support FreeSync, which was first announced by AMD at CES 2014 as a competitor to Nvidia's similar G-Sync technology. It's a big win for AMD, who have been working to get their royalty-free and VESA-backed technology onto the market as quickly as possible, recently announcing that FreeSync will be supported by the three biggest display scaler manufacturers.
At the event, Samsung specifically announced five Ultra HD (3840 x 2160) monitors that will launch in 2015 and support FreeSync. The UE590 will be available in 23.6 and 28 inch sizes, while the UE850 will come in 23.6, 27 and 31.5 inch models. Further details for these monitors will be announced shortly.
FreeSync will be supported in a range of AMD's graphics cards, athough not all of them: you'll need a GCN 1.1 GPU or higher, like the Radeon R9 290 or R9 290X. Despite the power of these cards, FreeSync is an especially important feature as they struggle to deliver 60 FPS at high quality settings at monster resolutions such as Ultra HD.
Thanks to FreeSync's open and non-proprietary nature, monitors using the technology will (most likely) be cheaper than equivalents using G-Sync. There will still be a premium initially as display scaler manufacturers produce their first FreeSync compatible scalers, but it shouldn't hurt the hip pocket of gamers significantly.