hd graphics 620 显卡能否 2k 开到 75hz

搜索结果第一条——Intel Community 有和你差不多的问题,答案看了 2 个都是不能。
Q:I have a dell inspiron 7378 with HD 620 and just bought a 1440p monitor that supports 75hz at that resolution.
I'm hooking up the monitor via HDMI and the refresh rate maxes out at 60hz. Is there something i need to enable to unlock the higher refresh rate? I have the latest drivers from Dell & Intel and would assume the HDMI cable provided by Dell would be rated high enough to handle the bandwith.Any suggestion?

A:After seeing so many issues here, I established a rule: If the cable came with a monitor, it is trash; throw it away and purchase a quality product.Your particular question has been asked previously. The answer has always been that 60Hz is the maximum. It makes no sense; even if the interface only supports HDMI 1.4, it can still handle 75Hz data rates for a standard 1440p monitor.Sorry. Maybe Intel Customer Support can provide a better answer...

Q:I have a Lenovo Yoga 520-14IKB and just bought a 1440p monitor that supports 75hz at that resolution. I connected it via HDMI (only option) and the refresh rate maxes out at 60hz. How to get 75 Hz?

A:The Intel® UHD Graphics 620 Controller and the graphics driver can display Max Resolution of 4096x2304@60Hz over DisplayPort* (DP) 1.2 or HDMI* 2.0, and 4096x2304@24Hz over HDMI 1.4.

When bandwidth and system configuration allow it, the GPU will display any resolution equal or lower than the Max Resolution supported by the processor that is also supported by the display and the computer. In this scenario, the Intel® Graphics Command Center will show the Display Modes supported by the monitor under the available "Resolution and Refresh rate" drop-down menus. This means that all the components involved in the configuration must support the desired resolution.

We would like to know if you have verified with the computer manufacturer (OEM) Lenovo* if the desired Resolution + Refresh rate is supported through the HDMI* port on the computer? This is since we have seen scenarios where OEM customizations may limit the Max Resolution and bandwidth supported by the system.

If your OEM confirms the desired resolution is supported, please provide us with the following information so we may check this further:

1- Just to make sure, when you said "1440p", do you mean Resolution 2560x1440@75Hz? If not, could you please confirm the exact resolution that you are trying to achieve?

2- We understand this is a new monitor? Is this behavior happening since the first day that you have the monitor? Have you tested the monitor with another computer? Have you tested another 1440p monitor with your computer? Please provide details:

3- Are you using a straight-through connection HDMI-to-HDMI with a single cable to connect the monitor? Or are you using any type of video adapters, converters, or dockings? Please provide details.

4- A Report for Intel® Graphics Drivers following the steps on the link. Make sure the monitor is connected to the computer when generating the report.

5- Run the Intel® System Support Utility (Intel® SSU) to gather more details about the system:

Download the Intel® SSU and save the application on your computer
Open the application, check the "Everything" checkbox, and click "Scan" to see the system and device information. The Intel® SSU defaults to the "Summary View" on the output screen following the scan. Click the menu where it says "Summary" to change to "Detailed View".
To save your scan, click Next and click Save.
Once you have saved the file (.txt file), please attach it to your reply.

To upload and attach a file, use the "Drag and drop here or browse files to attach" option below the response textbox.

等你实测了

@huntagain2008 感谢分享，我现在也开始怀疑笔记本是否为 2.0 接口，买的时候是在 17 年，后面说是 15 年就对 1.4 接口做了版本压制，就自以为是 2.0 接口，实际多少没有确认过；再次感谢大佬的分享💗💗

@eangt emmm ，这个还得等自己确定接口是否为 2.0 再做切换ヾ(≧▽≦*)o