Need help getting 75hz

pato92 · *Last edited by pato92; 07-16-2012 at 19:36.*

I recently bought a "eMachines E233Hbd 23in Widescreen LCD Monitor" but my card is not letting me get my 75hz. Im using my DVI wire to enable GPU scaling which I can play my PC games but it won't allow me to get 75hz.

I'm using AMD Raedon HD 6670 on Windows XP.

I just need the help

Solid_State · *Last edited by Solid_State; 07-16-2012 at 21:00.*

On the Plug and play monitor property's window (the one on the left in the provided screen shot)

1. go to the adapter tab

2. now press "list all modes"

3. select your supported 75hz resolution from there

FYI- your monitor supports 1920x1080 and 75hz but not necessarily together.

pato92 · 07-16-2012, 19:58 | posts: 5

its only giving me 60hz

Solid_State · 07-16-2012, 20:58 | posts: 103 | Location: Canada "muddy waters"

Could you provide a screenshot of your "List all modes"

Ex:

pato92 · 07-16-2012, 21:32 | posts: 5

Solid_State · 07-16-2012, 22:04 | posts: 103 | Location: Canada "muddy waters"

That screen "list all modes" shows what your screen can display (not all native). If your desired resolution of 1920x1080 @ 75hz is not listed, it won't.

You can select you resolution from this screen by, highlighting your selection, then pressing OK.

My personal experience is most monitors will support higher refresh rates at lower resolutions, its a bandwidth issue that thus screen can handle. Just skim through that "list all modes" and you will see a pattern.

Solid_State · 07-16-2012, 22:09 | posts: 103 | Location: Canada "muddy waters"

I see CCC shows it supports 75hz, but at what resolution?

"FYI- your monitor supports 1920x1080 and 75hz but not necessarily together."

pato92 · 07-16-2012, 22:43 | posts: 5

by lowering the resolutions I still dont get the 75 hz and if I switch the the VGA cable then i get it 75 hz but I wont be able to get aspect ratio.

Solid_State · *Last edited by Solid_State; 07-16-2012 at 23:02.*

Looks like you monitor can't support your desired resolution.

One thing you might want to try if you haven't already is turning off EDID detection from CCC. That might make it so you can force unsupported modes but that could cause screen distortion and possibly damage your monitor.

"I can't reference specifics from CCC, because my PC does not have it installed"

kakarot · 07-17-2012, 00:03 | posts: 663 | Location: USA

Try 1280x1024. I highly doubt that monitor can handle 1080p@75Hz

pato92 · 07-17-2012, 03:03 | posts: 5

@solid_state thanks for the help but i really dont want to risk damaging my monitor D:

@kakarot it didnt work

tweakpower · 07-17-2012, 07:34 | posts: 932 | Location: Serbia

Can you untick read EDID in control panel? If you can, it will give you all refresh rates (not sure why you need 75Hz, and if monitor can do it).

Brendruis · 07-17-2012, 07:48 | posts: 1,242 | Location: Melbourne, FL

Why do you want to play at 75Hz?

kakarot · 07-17-2012, 08:17 | posts: 663 | Location: USA

The max for that monitor at 1080p is 60Hz. Everywhere its listed for sale 60Hz is the max reported. But are you really willing to lower the rez for 75Hz even if you could? That is so not worth it in every possible way

Athlonite · *Last edited by Athlonite; 07-19-2012 at 00:57.*

the only res I get showing up with 75Hz is 1280x1024

usually the max resolution and max refresh rate are mutually exclusive so you get
1920x1080p@60Hz for max resolution but only 1280x1024@75Hz for max refresh rate

also LCD's are not like CRT's when it comes to refresh rate
an CRT draws each visible line one at a time so the faster the refresh rate the quicker the picture is drawn on the screen

an LCD on the other hand draws the whole screen at once

what you really need to look at is whats the response time of your LCD panel, more than 8ms Grey to Grey and you'll probably start to get ghosting in Video and fast paced games

for good performance you need atleast 5ms for best performance 2ms is best

tweakpower · 07-19-2012, 07:14 | posts: 932 | Location: Serbia

Quote:

Originally Posted by Athlonite

the only res I get showing up with 75Hz is 1280x1024

usually the max resolution and max refresh rate are mutually exclusive so you get
1920x1080p@60Hz for max resolution but only 1280x1024@75Hz for max refresh rate

also LCD's are not like CRT's when it comes to refresh rate
an CRT draws each visible line one at a time so the faster the refresh rate the quicker the picture is drawn on the screen

an LCD on the other hand draws the whole screen at once

what you really need to look at is whats the response time of your LCD panel, more than 8ms Grey to Grey and you'll probably start to get ghosting in Video and fast paced games

for good performance you need atleast 5ms for best performance 2ms is best

^This. But you can also benefit from 120Hz LCD's, since it is legacy from CRT's and that is still the way how GPU sends signal to monitor.

INSTG8R · 07-19-2012, 07:27 | posts: 1,188 | Location: Lost in Norway

Your monitor "can" run a 75Hz but not at it's native resolution. Pretty common with LCD/LED monitors.
As others have stated it if you lowered the resolution then it would support 75Mhz(Not recommended, Native Resolution is always best)