Refresh Rate Decrease After Ati Driver !

[Revolution]

Please help!
My friend bought a new Sapphire 5670 few days ago.
He got AOC F22 22" LCD(native resolution 1920x1080 @60Hz & support 1600x1900@75Hz too).
He was using 1600x900 @75Hz at his desktop with Intel VGA driver until the new card.
Now,the problem is the refresh rate has change to 60Hz with 1600x900 resolution.
He,could not find any 75HZ option at Catalyst 10.12 setting.
There is only 60Hz option with 1600x900 at catalyst Control Center.
He could not able change 75Hz(1600x900) from other windows setting too.

His rest of the spec ATM:
Intel E2180@2.0GHz(NO OC) CPU
Gigabyte GA-G31M-S2L (rev. 1.0) Motherboard
2x2GB DDR2 RAM
Samsung DVD+RW SATA
320GB WD Blue HDD SATA
250 GB Seagate HDD SATA
Sapphire HD5670 512MB
AOC F22 22" LCD@1920x1080
2x120mm Fan
Corsair VX450W

Thanks.....

 

[Throckmorton]

It doesn't matter. The monitor only does 60hz. It just throws away the extra frames if you set it to 75hz.

Also, he should run native res 1920x1080. Using 1600x900 creates blurriness, and also would add some input lag because the monitor has to scale up the video.

 

[Ben90]

While Throckmorton may be absolutely correct with the monitor throwing away the extra frames, I often see this response incorrectly applied to all LCDs. I'm not going to research if your monitor does indeed throw away the extra frames or not, but if you want to attempt to get it to run at 75hz there are a few things you can try.


First off make sure you uncheck the "Hide modes that this monitor cannot display" box. If that doesn't work, and it probably wont, try this:
Start->Run->Regedit->Find->DALNonStandardModesBCD1

On the bottom line where it says 0040, add the numbers: "16 00 09 00 00 00 00 75" and hit okay. Restart the computer and cross your fingers that it works.

Getting custom resolutions to work with ATi cards is a giant pain in the butt, if it works at all as there is no way to force resolutions. This is one thing I absolutely love about Nvidia drivers as if I want to run my 800x600 screen at 1234x155@252hz, the card will be outputting a 1234x155@252hz signal regardless of if the monitor can accept it or not.

 

[Revolution]

First off make sure you uncheck the "Hide modes that this monitor cannot display" box.

Nope,only 60hz available.
Now I get it.
Ati is really pain.
1600x900@75hx is good for mainly web pages.
No pain for eyes.
And there is no blurriness at that resolution with AOC F22.
At 1920x1080 the letters are very tiny and hard to read.
But game is no problem.
And talk about extra frames in modern games.
I have a doubt with that HD5670 512MB card and that 2GHz CPU.
Though tried Battlefield Bad Company 2 @1600x1900 with high setting.
Got no lag or blurriness with DVI cable.
BTW,how to measure frames in games ?
Ok,will try that reg tweak.....

Thanks u all for ur replies guys!

 

[Throckmorton]

What OS is he using? If it's Vista or Win 7, he can increase text DPI. I do that on my work laptop because it's 1920x1200 on a 17" screen which is too small for me unless I make the text bigger.

 

[happy medium]

BTW,how to measure frames in games ?

Fraps.

http://www.fraps.com/download.php

 

[Revolution]

What OS is he using? If it's Vista or Win 7, he can increase text DPI. I do that on my work laptop because it's 1920x1200 on a 17" screen which is too small for me unless I make the text bigger.

Windows XP SP3 32bit.
And AOC F22 is actually 21.5".

 

[Ben90]

Hmmm, that is interesting that that didn't work. XP is much less stringent compared to Vista/7 with how it handles stuff like that and I would expect it to detect your 75hz monitor.

Experience leads me to believe that you are getting shafted by drivers. If its really that big of a deal to you I would try some older Cats such as 9.x. Its impressive how such a company as complex as ATi whose sole purpose is to build GPUs can repeatedly mess up things as simple as detecting what resolution a monitor supports. Hell, I had to wait until 10.4 for the drivers to magically realize my monitor does in fact support 1400x1050@120. No amount of EDID hacking or registry tweaking could get that resolution supported, completely unacceptable in my book.

Alternately, it could very well be something that we overlooked and it would make my rant seem a little stupid. However, I have yet to be wrong by calling out bad drivers on every thread containing the words "Resolution" and "ATi".

 

[Revolution]

@Ben90
Sorry,that registry tweak did not work.
Have not tried with older Ati driver.
Don't have any net at home,only got mobile GPRS.....
So,downloading big file could be problem for us.
But,we will try new 10.4 later.
BTW,which 9.x driver is stable and best for HD5670 ?
Is 9.x better than 10.12 ?

Fraps.

http://www.fraps.com/download.php

Thanks!
We tested Battlefield Bad Company 2 @1920x1080 with highest setting.
And got average 25fps.
25fps not super but playable.
Unfortunately Fraps is not totally free.....

 

[betasub]

Unfortunately Fraps is not totally free

Since when? I have plenty of (older) versions that are totally free.

 

[Ben90]

BTW,which 9.x driver is stable and best for HD5670 ?

9.9 was the original driver for the 5670s I believe. If your on data capped internet, I would probably just stick with the 10.12s as going back will most likely not change anything, I was just throwing shots out into the dark as sometimes random issues like this can be cured with older drivers.

I'm completely out of feasible ideas now

 

[Revolution]

Since when? I have plenty of (older) versions that are totally free.

Then why there is "Buy" option on the fraps site ?
May be u will not get some features ?.....

 

[lsv]

Why would you use anything but the native resolution on an LCD? Use native, use native refresh and be done with it.

To everyone giving advice of using custom resolutions; stop it. It's pointless. Use the native. Dear god

 

[Revolution]

Trust me,reading web pages on 21.5" screen at 1920x1080 is not so comfortable for eyes.
BTW,he will run desktop @1600x900 with 60Hz until he install Windows 7 or until Ati release a better driver.

OK,I assume native resolution best for LCD.
Now,I have a stupid question.
Which is better for gaming high resolution with low setting or low resolution with high setting ?
For example low setting with 1920x1080(native resolution) or high setting with 1600x900 ?
Cos that system is not meant for gaming at 1920x1080 if I'm not wrong......