2233rz 120Hz help

Moothead2 · 6 Sep 2011 at 16:56

I need help getting my monitor to run at 120Hz. I bought a Dual link DVI cable as I bought the monitor from the MM so it came without it's original cables etc. I've tried a few things and I just can't seem to get it to work at 120Hz. I'm using a 6950 if that means anything in regards to the problem.

What I've tried;
- Install the latest (Only) 2233rz driver from the Samsung website.
- Re-install latest AMD driver.

Is there anything I haven't done which may fix the problem?

Thanks.

Surveyor · 6 Sep 2011 at 17:20

Try the other DVI connector on the HD 6950.

1 is single link DVI-D so won't do 120Hz.

1 is dual link DVI-I so will do 120Hz.

Kanpai · 6 Sep 2011 at 17:31

There's always been an issue with AMD cards operating 120hz on these monitors. I had a 5870 with this monitor and had nightmares with it, switched back to nvidia and all seemed well.

There's a registry tweak you can make the driver force 120hz.

Quoted from another forum:

If anyone wants an easy way to try and force 120hz on any setup (should work if it can read your registry EDID, can still do it if not but it's more of a bitch), give this a go (with the screen set to 60hz and whatever res you want to keep):

-Load Phoenix EDID Designer 1.3
(http://www.softsea.com/download/Phoenix-EDID-Designer.html)

-Extract Registry EDID
(Tools menu > select the listed option then click Extract EDID)

-Double the Pixel Clock
(click on the Detailed Timings tab, click the pencil icon to edit, type in double the whatever the current value is into the Pixel Clk field (round to 1 decimal place), click the disk icon to save the changes)

-Save the EDID
(don't forget to click the disk icon to save changes first, File menu > Save EDID As)

-Load Monitor Asset Manager 2.5
(http://www.entechtaiwan.com/files/moninfo.exe)

-Open the EDID you made
(File menu > Open and select the file you saved)

-Create a monitor driver
(File menu > Create INF, also check the res is correct in the right hand pane e.g. 1280x720 at 120Hz)

Now install the new driver, reboot and you should be able to select 120hz (set the res first, then go into advanced settings > monitor and set the refresh rate).

Surveyor · 6 Sep 2011 at 17:40

Try switching to the other DVI connector first.

It's the easiest solution if it works.

Moothead2 · 6 Sep 2011 at 18:24

I've double checked it's in the DL slot on the graphics card and I've created a INF file but how can I be sure that's what is being installed? I've tried going through Device and printers and clicking on update driver and it's installed something but I'm not entirely sure it is the newly made driver. Also, is there a way to test if a DVI cable is DL or single link (Other than the number of pins and opening it up and cheching the wiring)? I still can't get 120Hz working

.

Surveyor · 6 Sep 2011 at 18:28

The easiest way to tell if it's dual link is by looking at the number of pins.

Moothead2 · 6 Sep 2011 at 18:35

Thanks, but I know that

. It's just I've heard of some DVI-D SL cables have had pins put in so they look like DL cables but aren't wired so they will only work as SL cables. Thinking mine may be one of those but can;t really be sure

.

Surveyor · 6 Sep 2011 at 18:38

Moothead2 said:
Thanks, but I know that . It's just I've heard of some DVI-D SL cables have had pins put in so they look like DL cables but aren't wired so they will only work as SL cables. Thinking mine may be one of those but can;t really be sure .

So you're working on the basis that you've been scammed?

I would think the only way to find that out would be to open the connector up and see if all the pins were connected.

Moothead2 · 6 Sep 2011 at 18:42

I need to make sure I have installed the new driver properly before I'd go as far to say I'd been scammed. I plan on opening it up after I've tried everything else.