“Can the HDMI cable this monitor comes with be able to support 144hz?”
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No. It comes with a display port cable and that is the only one that will have 144hz. I think it is 120hz for HDMI, but not sure.
Sorry, there was a problem. Please try again later.Hi JT. The refresh rate happens at the display not at the source. When you look up information on HDMI cables, one common trend and flaw you see are HDMI cables being advertised as 120Hz HDMI cables or even 240Hz. When you actually delve into the specifications from the HDMI organization however, what you see is that HDMI cables can only support up to 60Hz, even with HDMI 2.0. There is no such thing as a 120Hz or 240Hz HDMI cable. HDMI cables are 60Hz, anything beyond that would be handled by the LG 27GL650F-B 27 Inch UltraGear™ Full HD IPS Gaming Monitor with G-Sync® Compatible, Adaptive-Sync. The HDMI ports on the monitor are HDMI 2.0 ports. As an interface, HDMI 2.0 hosts three 6Gbps TMDS channels that offer a maximum theoretical throughput of 18Gbps. The pixel clock ticks at 600MHz on HDMI 2.0 – 600 million oscillations per second – which is a marked improvement over HDMI 1.4's 340MHz pixel clock. 1080p at 144Hz would even fit within HDMI 1.4b's 340MHz pixel clock (1920 * 1080 = 2.07 million pixels * 144 = 2.99 million pixels per frame. For HDMI 2.0, 1080p @ 144Hz falls well within the 600Mhz pixel clock and 18Gbps throughput cap (even accounting for 8b/10b encoding). For HDMI 2.0 to properly work for higher display refresh rates, the monitor and the video card must both host the HDMI 2.0 interface. There's no such thing as “HDMI 2.0 cables.” You can use “old” HDMI cables for HDMI 2.0 devices; just make sure the display device and video card both support the HDMI 2.0 interface...^IFV
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