120hz Output? (7970m)

Just wondering if any of you know if the 7970M is capable of 120hz output and if so, only via DisplayPort? Would like to know before I go out and buy DP-HDMI

I manage to get 120hz via HDMI at 800x600, thats all though, everything else 60hz ):

Thank you, Joseph

 

i dont think a dp-hdmi will work. only thing that may work would be dp-dual link dvi, and then it needs to be one of the adapters powered by usb with 330mz. i can only confirm that it will work with the nvidia cards.

NVIDIA Online Store - Display Port to Dual Link DVI-D Converter this is the one i have. ive read the apple ones work as well. they all cost around 100$

 

Thank you for your information, at that cost im just going to have to live with 60hz...

 

vic_doom 69 is right. You can't stream 120hz unless you use that.

 

Sorry to bring back this thread but I never got around to asking why?
We can output 120hz via DVI with a desktop, why not via laptop?

 

I use a Mini DP port to DP port adapter + a regular DP cable,
And display 120hz @1080p resolution on my monitor just fine.

Links:
Amazon.com: Cable Matters Gold Plated Premium DisplayPort to DisplayPort Male to Male Cable in Black - 6 ft: Electronics

Amazon.com: Accell B112B-001B UltraAV Mini DisplayPort/DisplayPort(f) Adapter (Black): Electronics

 

Yeah, my screen doesnt have a DP input, just HDMI, DVI s:

 

The bios needs a 120hz VGA compatibility mode to pass POST. This is only available on NV cards. It's why the iGPU (intel) is bypassed in the 120hz model (not available). The 120hz connector on the MB is different from the 60hz one so someone with some clever wiring could do it

After you are in windows you are using the GPU driver and whatever capabilities (it checks the display you connect) are available.

HTH

EDIT: If dell had got a dual sync 60/120hz display panel then 120hz users would still have their iGPU. As it is it is ONLY 120hz

 

Thanks but my question still stands, when in windows how come I cant just stick a HDMI in and get 120hz out of it? there is more than enough bandwidth within HDMI.
I'm guessing as the output does not directly come from the GFX card, whatever interface it does have to pass through does not have the capability to output 120hz over 800x600??

 

Sorry, wasn't reading it right. It's probably because the highest refresh rate for HDMI standard in the specs is 50/60hz (country dependent).

 

Actually since I work with Vizio and have a good understanding now of how everything works, HDMI can handle any frequency you put to the device, the only thing that is required is the output from the computer to be 120hz, you might want to check the CCC to see if it has any options i know that the nvidia control panel gives me the option to send to my vizio tv 240hz and in 3d so I don't see how you can't send 120hz to a 120hz screen via hdmi, the logic isn't there. when you plug in the hdmi it should have the ability to choose 120hz like mine does (240hz in my case actually). I would say plug it in and go to the CCC and see if there is any hdmi settings, been like 6 months since i been in the CCC panel but it couldn't have changed that much since then so i would check in the multiple display menu and see what it has in there. should be an option for the hz. By the way this is also at 1080p that it runs this

 

Dont mean to hijack the thread, but if i read you correctly, are you implying that the hdmi should be able to output 120 Hz @ 1080p (in which case, 3d @ 1080p with 120 Hz over hdmi would be possible)? I have the system in my sig below (gtx 580m with 3D), and this would be ineteresting if that is the case.. will take a closer look at the nvidia control panel when i get home..

 

Maybe this can help? You can "overclock" some screens to 120hz as long as they have an Nvidia GPU. My M15x has being running at 120hz since last month with no problems.

 

Yes its possible its just a matter of the restriction of the system which mine didn't have any hassle at all with full hd 3d at 1080p for some reason but i have to get my system back to normal since the hdmi just went out because of some odd reason with net framework 4.0 so might have to flat line and re do my system to get it back to working. But you should be able to toy with the control panel to get it to work. Which by the way 3d with black ops 2 I was only averaging 45fps so literally cut in half on fps from what it was normal at 1080p which normally was 100 roughly if not 120 at times.

 

Yup, am aware of the 'forcing' of higher refresh rate on screens, but i was interested in gaming in 3D @ 1080p via hdmi as it just wouldnt allow that. For example, if i try running borderlands 2 @ 1080 p in 3D via hdmi, it gives me the red-text error, saing that the current resolution isnt 3d compatible. From what I have read and scavenged around the net, this seems to be a limitation of the hdmi.

This would really be awesome! Didnt get a chance to fiddle around with my system yet (Valentine's day ), but will do so and report back if i have any luck. Thank you!

 

So finally with my 120hz screen

Using a BenQ XL2410T.
HDMI -> HDMI. 60hz only
HDMI -> DVI. ^
VGA-> VGA. 60hz only (can unlock EDID and choose 30-200hz but only 60hz works
VGA-> DVI. ^

Under the CCC I dont have an option to make or choose my own hz when using HDMI or DVI. It recognises that the screen can do 120hz ( http://puu.sh/23z6L) but cannot choose it anywhere.( http://puu.sh/23z8J).
Also, when using HDMI the image is not sharp what so ever regardless of screen settings. Its not the wire, using a high quality wire.

 

sounds like ati cant do it then.

 

Looks like I am just going to have to go with vic_doom69, if an alienware tech person agrees too: