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post #8291 of 38701
Quote:
Originally Posted by Ken1649 View Post

MSI 7970 Lightning

Just a heads up, it has 2 DVIs Single Link unlike ASUS DCII that applied a switch to enable DVI Dual Link by disabling one DisplayPort.

So for those that need 120Hz but no native DisplayPort, the Lightning is not the right choice because there's no adapter out there to convert true DisplayPort signal to DVI Dual Link that supports 120Hz.

That's apparently also an issue with ATI cards locking the pixel clock rate for DP. I've been talking to them (ATI support) because of those Korean 2560x1440 monitors that were doing 120Hz, but no one could get their cards that high.

This is an interesting thing to note for all these people that rushed to get the Lightnings.
     
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post #8292 of 38701
I don't think its a surprise because it's explain in the reviews, comes with two single link dvi-d and dvi-i ports. The difference in dvi ports in itself will be a pain lol.
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post #8293 of 38701

 

Quote:
Originally Posted by TheJesus View Post

Quote:
Originally Posted by Ken1649 View Post

MSI 7970 Lightning

Just a heads up, it has 2 DVIs Single Link unlike ASUS DCII that applied a switch to enable DVI Dual Link by disabling one DisplayPort.

So for those that need 120Hz but no native DisplayPort, the Lightning is not the right choice because there's no adapter out there to convert true DisplayPort signal to DVI Dual Link that supports 120Hz.

That's apparently also an issue with ATI cards locking the pixel clock rate for DP. I've been talking to them (ATI support) because of those Korean 2560x1440 monitors that were doing 120Hz, but no one could get their cards that high.

This is an interesting thing to note for all these people that rushed to get the Lightnings.


There's a lot of misinformation about those Korean Catleap too or w/e they are called. It's just impossible to get 1600/1440 @120Hz using DVI Dual Link. It's hardware limitation, the bandwidth of DVI Dual Link can not and will not be able to carry such resolution @120Hz.

 

The only capable is DisplayPort 1.2 but such monitor does not exist yet. At least for regular consumer market.
 

 

 

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post #8294 of 38701
Quote:
Originally Posted by Ken1649 View Post

There's a lot of misinformation about those Korean Catleap too or w/e they are called. It's just impossible to get 1600/1440 @120Hz using DVI Dual Link. It's hardware limitation, the bandwidth of DVI Dual Link can not and will not be able to carry such resolution @120Hz.

The only capable is DisplayPort 1.2 but such monitor does not exist yet. At least for regular consumer market.

ATI declared shenanigans on DVI Dual Link and DP not being able to handle 1440P @ 120Hz, lol. I'm waiting on some files from people with the OC monitors so I can send them to ATI.

Someone managed to push 120Hz to the monitors with a 680, but it kept resetting in games (I think they managed to fix that, but I'm not sure).
     
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post #8295 of 38701

 

Quote:
Originally Posted by TheJesus View Post

Quote:
Originally Posted by Ken1649 View Post

There's a lot of misinformation about those Korean Catleap too or w/e they are called. It's just impossible to get 1600/1440 @120Hz using DVI Dual Link. It's hardware limitation, the bandwidth of DVI Dual Link can not and will not be able to carry such resolution @120Hz.

The only capable is DisplayPort 1.2 but such monitor does not exist yet. At least for regular consumer market.

ATI declared shenanigans on DVI Dual Link and DP not being able to handle 1440P @ 120Hz, lol. I'm waiting on some files from people with the OC monitors so I can send them to ATI.

Someone managed to push 120Hz to the monitors with a 680, but it kept resetting in games (I think they managed to fix that, but I'm not sure).


That's just physically impossible. I can fool others with proof with screen shot to show 2560x1600 @120Hz. But I won't be able to fool myself. I can force the EDID to do so but in reality = 0. That's just like 60Hz monitors showing 120 or 200 FPS.

 

DisplayPort 1.2 is true and has the bandwidth for 2560x1600 @120Hz but DVI is next to impossible.
 

 

 

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post #8296 of 38701
Quote:
Originally Posted by Ken1649 View Post

That's just physically impossible. I can fool others with proof with screen shot to show 2560x1600 @120Hz. But I won't be able to fool myself. I can force the EDID to do so but in reality = 0. That's just like 60Hz monitors showing 120 or 200 FPS.

DisplayPort 1.2 is true and has the bandwidth for 2560x1600 @120Hz but DVI is next to impossible.

Now you know why I want to get AMD to actually admit that its impossible, lol. This was my first email and their response:


Thank you for contacting AMD

I understand that you asking are the AMD Radeon HD cards capable of outputting 2560x1440 resolution at 120Hz refresh rate via the DisplayPort connection (or DL-DVI)? From a hardware point of view at least, because the drivers have this locked to ~85Hz I believe. A lot of argument has been over the pixel clock limit.

Also, it would be incredibly appreciated if the drivers could be changed to remove this 85Hz limitation or at least a way to get past it.

If I missed any information about your issue please let me know, as my suggestions may change.

Any of our HD5000 series or higher cards is capable of outputting 2560X1440 resolution at 120Hz Refresh rate but has to be one with a dual link DVI connection or native DP output, and also the display has to provide the resolution and refresh rate as supported for it to be available for selection.

I believe since Catalyst 10.X or after as long as the display supported 120Hz, the selection was available. The reason people are seeing 85Hz is because their display isn’t supporting 120Hz.


They haven't admitted it yet tongue.gif
     
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post #8297 of 38701

Hehe actually there're more than the drivers when it comes to bandwidth. It's the TMDS bandwidth as in HDMI which is supposed to support 120Hz for HDMI 1.4. The bandwidth is available (340 MHz) but there's no manufacture to utilize it. Maybe it has something to do with Royalty is my guess.

 

When contacting technical support I always start with; "Let's not start with the text book trouble shoothing because I have been following your product since..... and I know exactly what I am talking about and let's not wasting your time as well as mine. Please show this inquiry to the engineer or whoever there that are qualified to answer....." Otherwise, you will end up explaining more to them more their own products lol.

 

That's how I got my reply about ZeroCore Power State. One reply straight to the point lol.

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post #8298 of 38701
Quote:
Originally Posted by Ken1649 View Post

Hehe actually there're more than the drivers when it comes to bandwidth. It's the TMDS bandwidth as in HDMI which is supposed to support 120Hz for HDMI 1.4. The bandwidth is available (340 MHz) but there's no manufacture to utilize it. Maybe it has something to do with Royalty is my guess.

When contacting technical support I always start with; "Let's not start with the text book trouble shoothing because I have been following your product since..... and I know exactly what I am talking about and let's not wasting your time as well as mine. Please show this inquiry to the engineer or whoever there that are qualified to answer....." Otherwise, you will end up explaining more to them more their own products lol.

That's how I got my reply about ZeroCore Power State. One reply straight to the point lol.

Lol, that's why I didn't get a response to the follow-up question for a week, and that was simply that it was being elevated to a higher level tongue.gif Then they said:

Response and Service Request History:
Would you be able to send the EDID information that is coming from the monitor?

This utility will provide information on how the EEPROM chip or the driver file from the monitor is reporting this to the OS.

1. Please provide the EDID report (using GetEDID.exe) of your monitor while it is connected to the graphics card. You can obtain the GetEDID.exe file from the following location using an FTP Client Software like FileZilla or CuteFTP.

*snip for privacy*

In order to update this service request, please respond, leaving the service request reference intact.

Best regards,

AMD Global Customer Care


So, they still think it works rolleyes.gif
     
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post #8299 of 38701

 

Quote:
Originally Posted by TheJesus View Post

Quote:
Originally Posted by Ken1649 View Post

Hehe actually there're more than the drivers when it comes to bandwidth. It's the TMDS bandwidth as in HDMI which is supposed to support 120Hz for HDMI 1.4. The bandwidth is available (340 MHz) but there's no manufacture to utilize it. Maybe it has something to do with Royalty is my guess.

When contacting technical support I always start with; "Let's not start with the text book trouble shoothing because I have been following your product since..... and I know exactly what I am talking about and let's not wasting your time as well as mine. Please show this inquiry to the engineer or whoever there that are qualified to answer....." Otherwise, you will end up explaining more to them more their own products lol.

That's how I got my reply about ZeroCore Power State. One reply straight to the point lol.

Lol, that's why I didn't get a response to the follow-up question for a week, and that was simply that it was being elevated to a higher level tongue.gif Then they said:

Response and Service Request History:
Would you be able to send the EDID information that is coming from the monitor?

This utility will provide information on how the EEPROM chip or the driver file from the monitor is reporting this to the OS.

1. Please provide the EDID report (using GetEDID.exe) of your monitor while it is connected to the graphics card. You can obtain the GetEDID.exe file from the following location using an FTP Client Software like FileZilla or CuteFTP.

*snip for privacy*

In order to update this service request, please respond, leaving the service request reference intact.

Best regards,

AMD Global Customer Care


So, they still think it works rolleyes.gif


I am afraid AMD is right at this point.

 

Because there's no such monitors exist. The one you should inquire is the Korean manufacturer that claimed possible 2560x1600/1440 @120Hz with DVI Dual Link. The DP 1.2 standard is not applied yet for regular consumer market.

 

The Korean manufacturers either don't know about the DVI standard or just full of it for marketing purposes tongue.gif
 

 

 

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post #8300 of 38701
Quote:
Originally Posted by Ken1649 View Post

I am afraid AMD is right at this point.

Because there's no such monitors exist. The one you should inquire is the Korean manufacturer that claimed possible 2560x1600/1440 @120Hz with DVI Dual Link. The DP 1.2 standard is not applied yet for regular consumer market.

The Korean manufacturers either don't know about the DVI standard or just full of it for marketing purposes tongue.gif

I don't think any of them ever actually said that they could do 120Hz, that was just a magical feature that people on here discovered, hah. LG actually has plans to release a 1440P with 120Hz IPS this year (I think this is where all the PCBs went tongue.gif ).

They just don't want to admit that the card can't actually push 120Hz @ 1440P rolleyes.gif "Its not the card, its the monitor!"
     
CPUMotherboardGraphicsRAM
2600K @ 5.0 ASUS Maximus IV Extreme Sapphire/Powercolor 7950 CF G.Skill Ripjaws X 4x4GB 
Hard DriveHard DriveCoolingCooling
OCZ Vertex 3 60GB's RAID 0 VelociRaptor 300GB EK Maximus IV Block EK FC-7950 Block x2 
CoolingCoolingCoolingCooling
EK Supreme HF Block D5 w/ BP Dress-up Kit XSPC EX240 Black Ice SR1 360 
CoolingCoolingOSMonitor
Primochill PrimoFlex 1/2" ID Black 14 NZXT Fans Windows 7 Professional x64 3x AOC 2436V 
KeyboardPowerCaseMouse
Razer BlackWidow Ultimate BF3 Edition Corsair HX1000 NZXT Switch 810 Black Razer Imperator BF3 Edition 
AudioAudio
Asus Xonar Essence STX Beyerdynamic DT770 250 Ohm 
CPUMotherboardGraphicsRAM
i5-2500K Asus Maximus IV Gene-Z AMD Radeon HD 5970 G.Skill Ripjaws X DDR3-1600 
Hard DriveHard DriveCoolingCooling
Vertex 3 60GB RAID 0 VelociRaptor 300GB XSPC EX240 Rad Black Ice GT 92MM Rad 
CoolingCoolingCoolingCooling
Black Ice GT 120MM Rad EK Supreme HF CPU Block EK 5970 Block XSPC 450 Pump/Res Combo 
OSMonitorKeyboardPower
Windows 7 Professional x64 3x AOC 2436vw Razer Black Widow Ultimate BF3 Edition Rosewill 750W HIVE 
CaseMouseMouse PadAudio
NZXT Vulcan Razer Imperator BF3 Edition Razer Scarab BF3 Edition ASUS Xonar Essence STX 
Audio
Beyerdynamic DT770 250 Ohm 
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CPUMotherboardGraphicsRAM
2600K @ 5.0 ASUS Maximus IV Extreme Sapphire/Powercolor 7950 CF G.Skill Ripjaws X 4x4GB 
Hard DriveHard DriveCoolingCooling
OCZ Vertex 3 60GB's RAID 0 VelociRaptor 300GB EK Maximus IV Block EK FC-7950 Block x2 
CoolingCoolingCoolingCooling
EK Supreme HF Block D5 w/ BP Dress-up Kit XSPC EX240 Black Ice SR1 360 
CoolingCoolingOSMonitor
Primochill PrimoFlex 1/2" ID Black 14 NZXT Fans Windows 7 Professional x64 3x AOC 2436V 
KeyboardPowerCaseMouse
Razer BlackWidow Ultimate BF3 Edition Corsair HX1000 NZXT Switch 810 Black Razer Imperator BF3 Edition 
AudioAudio
Asus Xonar Essence STX Beyerdynamic DT770 250 Ohm 
CPUMotherboardGraphicsRAM
i5-2500K Asus Maximus IV Gene-Z AMD Radeon HD 5970 G.Skill Ripjaws X DDR3-1600 
Hard DriveHard DriveCoolingCooling
Vertex 3 60GB RAID 0 VelociRaptor 300GB XSPC EX240 Rad Black Ice GT 92MM Rad 
CoolingCoolingCoolingCooling
Black Ice GT 120MM Rad EK Supreme HF CPU Block EK 5970 Block XSPC 450 Pump/Res Combo 
OSMonitorKeyboardPower
Windows 7 Professional x64 3x AOC 2436vw Razer Black Widow Ultimate BF3 Edition Rosewill 750W HIVE 
CaseMouseMouse PadAudio
NZXT Vulcan Razer Imperator BF3 Edition Razer Scarab BF3 Edition ASUS Xonar Essence STX 
Audio
Beyerdynamic DT770 250 Ohm 
  hide details  
Reply
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