r9 270x 144hz display?

[apple-tech-geek]

hello. good day.

i got a r9 270x and upgraded my radeon hd 5770 from it.

opun digging around settings i cant seem to find where to change my refresh rate..?

when i check "list all modes" in windows i only see 1440p 100hz listed.

wich is the exact same as my hd 5770.

and since the r9 would be roughly twice as fast as my old hd i'm pretty sure it should beable to push atleast 120 hz to the display (not talking about gaming. just desktop and other usage)

 

my cpu is a intel xeon x5675 (only one atm. going to order a second and toss it into this "mac pro conversion rig" aswel as upgrade the ram from 38 to 96gb)

 

the display is connected by display port. the display can also connect via hdmi if that would make a difference.

my display is a samsung space monitor 27 inch with amd freesync support 

 

i got a gigabyte version of the card 

wich wil also be bios modded to go beyond stock performance as the temps dont rise above 60c under 6 hours of max load inside this mac case. (the one thing apple is good  at is making alot of holes)

maybe anyone know if it would be possible to bios mod the card to support 144hz if it doesnt support this stock?

 

thank you in advance for your help!

[Tristerin]

HZ is driven by your monitor, so what monitor do you have specifically?  If its a 100hz panel it literally (engineering wise) can only be OCd for more HZ or wont display more HZ.  FPS wise it engineering wise cannot display more than either the native HZ in FPS, or the OC HZ in FPS.  No more regardless of GPU - if GPU can do 200 FPS it will just show the "Freshes/newest" 100 frames.

 

I have an R9 Fury (more than twice the horsepower of a R9 270x) driving a 1440p 144hz panel, that GPU is not a 144hz 2k capable card either (with modern games, even not so modern games) - so hitting those frames will be title, and settings dependant.

[apple-tech-geek]

10 hours ago, Tristerin said:

HZ is driven by your monitor, so what monitor do you have specifically?  If its a 100hz panel it literally (engineering wise) can only be OCd for more HZ or wont display more HZ.  FPS wise it engineering wise cannot display more than either the native HZ in FPS, or the OC HZ in FPS.  No more regardless of GPU - if GPU can do 200 FPS it will just show the "Freshes/newest" 100 frames.

 

I have an R9 Fury (more than twice the horsepower of a R9 270x) driving a 1440p 144hz panel, that GPU is not a 144hz 2k capable card either (with modern games, even not so modern games) - so hitting those frames will be title, and settings dependant.

turned out my monitor automatically "down clocked" itself to display port 1,1 instead of 1,2 when using the hd 5770. switching that over and 144hz mode showed up again aswel as the higher bit rate of color

[Tristerin]

59 minutes ago, apple-tech-geek said:

turned out my monitor automatically "down clocked" itself to display port 1,1 instead of 1,2 when using the hd 5770. switching that over and 144hz mode showed up again aswel as the higher bit rate of color

excellent news!  Thanks for replying with the solution as its another note to take for future troubleshooting help