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HDMI Acer Predator x34a capped at 50hz

Steppeulv
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Go to solution Solved by --SID--,

R9 280 has HDMI 1.4 2560x1440 @60Hz, 3440x1440 @50Hz, 3840x2160 @30Hz, 4096x2160 @24Hz.

 

You can get a cheap gpu like GT 1030 GDDR5 or RX 550. They'll do the job.

 

Posted

Hi there,

 

* So I am trying to get 3140x1440@100hz with my Acer Predator x34a (an older model capped at 100hz).

* My OS is Windows and my GPU is a AMD R9 280 with latest drivers (older card).

* The ports on my GPU are the following: HDMI, 2xMini-DisplayPort.

* The monitor is correctly OC'ed and I am familiar with changing monitor frequency within Windows; hence I firmly believe it to be a hardware/cable issue.

* I have used the monitor before at 100hz with Displayport and my older nvidia cards: RTX 2070 & GTX 970.

 

image.png.6b8ffdabdf1e3962d048aa57a3cd35c1.png

 

Currently:

With my probably outdated MiniDisplayport to Displayport cable I am able to run at 60hz.

With both my newly bought (supposedly) 2.1 HDMI and older HDMI cable I am capped at 50hz.

 

Any idea what I could try, or what is certain not to work?

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Posted

You need a whole new graphics card.

CPU: Intel core i7-8086K Case: CORSAIR Crystal 570X RGB CPU Cooler: Corsair Hydro Series H150i PRO RGB Storage: Samsung 980 Pro - 2TB NVMe SSD PSU: EVGA 1000 GQ, 80+ GOLD 1000W, Semi Modular GPU: MSI Radeon RX 580 GAMING X 8G RAM: Corsair Dominator Platinum 64GB (4 x 16GB) DDR4 3200mhz Motherboard: Asus ROG STRIX Z370-E Gaming

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Posted
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Just now, Jumballi said:

You need a whole new graphics card.

Not the best time to acquire them I am afraid..

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R9 280 has HDMI 1.4 2560x1440 @60Hz, 3440x1440 @50Hz, 3840x2160 @30Hz, 4096x2160 @24Hz.

 

You can get a cheap gpu like GT 1030 GDDR5 or RX 550. They'll do the job.

 

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3 minutes ago, --SID-- said:

R9 280 has HDMI 1.4 2560x1440 @60Hz, 3440x1440 @50Hz, 3840x2160 @30Hz, 4096x2160 @24Hz.

 

You can get a cheap gpu like GT 1030 GDDR5 or RX 550. They'll do the job.

 

Thank you so much!

 

Would you happen to know about the specifications for the Mini-Displayport?

(The specific card is a Club 3D Radeon R9 280 royalKing)

 

https://www.gpuzoo.com/GPU-Club_3D/Radeon_R9_280_royalKing_-_CGAX-R9287O.html

image.png.a37c4cabbe37d5d6d83c776a5094d481.png

 

Seems to suggest that the bandwidth is superior for HDMI... Could you verify? because I am able to do 60hz with MiniDisplayport which seems to run contrary to the maximum resolution as a proxy for bandwidth.

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Posted

No refreshrates mentioned and HDMI resolution is wrong.

 

HDMI 1.4a is not superior to DP1.2. DP1.2 supports 4096x2160 @50Hz. HDMI 1.4a supports 4096x2160 @24Hz.

 

Here's what MSI tells us about resolutions.

 

Screenshot_2021-05-04 Specification Radeon R9 280 GAMING 3G.png

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