Using Mobo video outputs powered/driven by Graphics card not integrated ?

[fendertele]

Okay got a bit of an issue where i need two HDMI outputs and my GFX card only has 1 output... it has a load of DP outputs but for whatever reason it will not recognise my monitors are higher than 60z... its possible the dp to hdmi convertors are limited to 60hz.

So got two screen requiring a hdmi to hdmi connection to allow 75hz on one and 4k on the other... both are not possible whilst converting.

My mobo has a hdmi out i could use and this would solve the problem.

The issue i have is i disabled my Ryzens 2200g integrated graphics in favour of my new rx580 as mentioned but also to allow me to get a nice 4ghz overclock.

I dont want to enable the integrated as it will then be drawing power away to keep my 4ghz overclock on the CPU.

Can i use the Mobo outputs without enabling the integrated ? have the graphics on the mobo powered from the DGPU ? or something ?

The Mobo output is going to be used for my 4k tv for playing intensive 4k media but no gaming.

Gaming will be done on the hdmi ouput to monitor on the rx580.

Hope that kind of made sense thanks.

 

[SnR3]

I believe the ports would be automatically disabled once u disable integrated graphics in bios.
Most mobo would also disable that port by default once discreet graphic is detected in pcie slot.
Would be easier if you mention what motherboard u actually use.
Regarding refresh rates are u using the appropriate dp cables? Certain refresh rates would be limited on 4k depending on the cable version used. I think dp above 1.3 should allow u to use 4k with higher than 60hz

 

[Sparx]

No you can’t use the onboard with the iGPU disabled.

And yeah using HDMI on the GPU output is likely why only getting 60Hz. Ideally you want to be using DisplayPort where possible.

 

[SnR3]

Oh I misread his post. He actually uses the HDMI port in his monitors. Yeah that for sure is creating the refresh rate limitations

 

[fendertele]

No you can’t use the onboard with the iGPU disabled.

And yeah using HDMI on the GPU output is likely why only getting 60Hz. Ideally you want to be using DisplayPort where possible.

No the issue is the HDMI output on the GFX card works perfect for both my tv and my monitor.... when i hook up my TV to the GFX hdmi output i can get 4k 30hz, when i hook up my monitor to my GFX hdmi i can get 1080p 75hz.

However using a DP to hdmi converter, when i hook up my TV to the DP/hdmi im limited to 1080p@60hz and similarly when i hook up the monitor to the DP/hdmi im limited to 60hz.

The convertor from DP to HDMI is causing the limitations... its limited i imagine to 1080p 60hz... so cant hit 4k for my tv or 75hz for my monitor.

I dont have the funds to look into buying anymore parts... just bought PC upgrades and tons of cables.

So i need basically to use the hdmi output on the mobo.... but dont want to draw any power away from my APU for graphics as i have the Cpu part overclocked to 4ghz.

 

[fendertele]

Oh I misread his post. He actually uses the HDMI port in his monitors. Yeah that for sure is creating the refresh rate limitations

No sorry you havent misread. The HDMi output isn't the issue it works perfectly... i can use it for my TV and get 4k@30hz or can use it for my monitor and get 1080p@75hz but unfortunetely i can only use one.

So im then left with either the monitor or tv needing to use the DP output and the DP>hdmi convertor i bought despite saying 4k i believe is limited to a maximum of 1080p so no good for my TV and 60hz so no good for my monitor.

Leaving me needing to use the Hdmi output on my mobo for my TV as it makes sense to keep the Monitor on my GFX card as it will be used for gaming... however i then have another issue.. if i used the integrated ill be drawing power away from the Cpu part of the chip and limit my Cpu overclock

Was hoping i could use the mobo video outputs with them drawing the graphic power from my GFX card and keeping my IGPU off. :/

 

[SniperSmithy]

HDMI before 2.0 doesn't support more than 60hz. It only supports 30hz @ 4k. I always use display port, unless your monitors are old or are actually TVs they should have display port comparability.

HDMI is almost always the inferior choice for PC.

 

[SnR3]

No the issue is the HDMI output on the GFX card works perfect for both my tv and my monitor.... when i hook up my TV to the GFX hdmi output i can get 4k 30hz, when i hook up my monitor to my GFX hdmi i can get 1080p 75hz.

However using a DP to hdmi converter, when i hook up my TV to the DP/hdmi im limited to 1080p@60hz and similarly when i hook up the monitor to the DP/hdmi im limited to 60hz.

The convertor from DP to HDMI is causing the limitations... its limited i imagine to 1080p 60hz... so cant hit 4k for my tv or 75hz for my monitor.

I dont have the funds to look into buying anymore parts... just bought PC upgrades and tons of cables.

So i need basically to use the hdmi output on the mobo.... but dont want to draw any power away from my APU for graphics as i have the Cpu part overclocked to 4ghz.

Yes the adapter is an issue.
You can use it and it's gonna work but you always gonna end up loosing some features of one or another

 

[Sparx]

Regardless no you can’t use the motherboard outputs.

Does your monitor not have DP output? If so you should use it. Or even DVI-D to monitor if the GPU has it. Then leaves HDMI free for the TV.

 

[SniperSmithy]

No sorry you havent misread. The HDMi output isn't the issue it works perfectly... i can use it for my TV and get 4k@30hz or can use it for my monitor and get 1080p@75hz but unfortunetely i can only use one.

So im then left with either the monitor or tv needing to use the DP output and the DP>hdmi convertor i bought despite saying 4k i believe is limited to a maximum of 1080p so no good for my TV and 60hz so no good for my monitor.

Leaving me needing to use the Hdmi output on my mobo for my TV as it makes sense to keep the Monitor on my GFX card as it will be used for gaming... however i then have another issue.. if i used the integrated ill be drawing power away from the Cpu part of the chip and limit my Cpu overclock

Was hoping i could use the mobo video outputs with them drawing the graphic power from my GFX card and keeping my IGPU off. :/

The motherboard HDMI port is linked to the IGPU, it doesn't connect to the graphics card at all. Also when using a graphics card the IGPU is disabled by default.

 

[SnR3]

HDMI before 2.0 doesn't support more than 60hz. It only supports 30hz @ 4k. I always use display port, unless your monitors are old or are actually TVs they should have display port comparability.

He don't use hdmi cable he used dp/hdmi cable so the signal is converted and he losing the dp features.
He only have one HDMI output on graphic card so he uses converter cable on 2nd display

 

[fendertele]

Okay my tv 4k is always 30hz im limited to this due to not having 2.0.

Im not trying to get 4k @60hz this isn't the problem.

I'm limited to 1080p due to the conversion from DP to HDMI probably the crappy converter i bought. And similarly the same crappy convertor limits refresh rate I imagine also as i cant get 75hz over it even at 1080p when using it for the monitor.

So it

Yes the adapter is an issue.
You can use it and it's gonna work but you always gonna end up loosing some features of one or another

I knew the 4k limitation was possible and would need to sit at 1080p when using it to the TV, but was surprised that it also limits the refresh rate to 60hz@1080p when using to the monitor ?

 

[SniperSmithy]

Okay my tv 4k is always 30hz im limited to this due to not having 2.0.

Im not trying to get 4k @60hz this isn't the problem.

I'm limited to 1080p due to the conversion from DP to HDMI probably the crappy converter i bought. And similarly the same crappy convertor limits refresh rate I imagine also as i cant get 75hz over it even at 1080p when using it for the monitor.

So it


I knew the 4k limitation was possible and would need to sit at 1080p when using it to the TV, but was surprised that it also limits the refresh rate to 60hz@1080p when using to the monitor ?

Does the monitor support DP?

 

[fendertele]

Sorry i think my post is a bit confusing my TV hooked up to my PC has never been 4k@60hz it doesnt have hdmi 2.0 its always been 4k@30hz and im fine with that as its just for watching 4k movies.

The issue i have is that my GFX card only had one hdmi output to use and both my tv and monitor need it for different reasons... as when i try using the DP outputs with a convertor to hdmi it limits both the tv and monitor in some way..... with the tv i cant get above 1080p and with monitor i cant get 1080p 75hz only 60hz.

So i thought i could use my mobos hdmi output for my tv connection... but didnt realise i would need to re-enable my igpu... which causes problem with my APUs Cpu overclock...

Looks like i'll need to buy one of the expensive DP to hdmi convertors.

cheers guys.

 

[fendertele]

Does the monitor support DP?

monitor has hdmi or dsub inputs.
TV has hdmi inputs only.

 

[SniperSmithy]

You need 1.4 or higher HDMI for over 60hz even at 1080p check the cable AND adaptor is 1.4 or better and the card supports 1.4 HDMI or greater.

Run out of posts for today, just check your drivers too then, weird that your DVI cable was outputting 1080p at 75 on IGPU but not on DGPU.

 

[fendertele]

You need 1.4 or higher HDMI for over 60hz even at 1080p check the cable is 1.4 or better and the card supports 1.4 HDMI or greater.

Im sitting with the monitor at 1080p @ 75hz using the hdmi output on my GFX card. When i connect the monitor to my GFX using the DP to hdmi convertor i can get 1080p also but its limited to 60hz.

I believe the convertor is limiting the hz to 60.

I can force the IGPU to be on along with my DGPU which is probably what im going to have to do, was just hoping to avoid this as it will then be drawing power away from my CPu overclock on the Apu.

 

[fendertele]

Here is another kicker i do actually have a dvi to hdmi cable that used when i was on the IGPU it sent 1080p @75hz... however same cable doesnt work on the gfx when hooked up to the Dvi output on GFX with same cable limited to 60hz..