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when i select 120Hz the resolution changes to 1680x1050

 
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post #1 of 7 (permalink) Old 07-20-2019, 07:52 PM - Thread Starter
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when i select 120Hz the resolution changes to 1680x1050

im having a weird problem with my old radeon 3870 (yeah save the upgrade talk im broke this is all i got) the card sees my monitor supports 120Hz but when i try and change it to that it forces the resolution to go from 1080p to 1680x1050 no matter what i do. is there a fix im not aware of?

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post #2 of 7 (permalink) Old 07-20-2019, 08:48 PM
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are you using a DVI cable or HDMI?
have you patching the drivers with "AMD/ATI Pixel Clock Patcher" + creating a custom resolution with "CRU"?
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post #3 of 7 (permalink) Old 07-20-2019, 09:06 PM - Thread Starter
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Quote: Originally Posted by generaleramon View Post
are you using a DVI cable or HDMI?
have you patching the drivers with "AMD/ATI Pixel Clock Patcher" + creating a custom resolution with "CRU"?
I was using a DVI to HDMI cable. Unfortunately that pixel thing only works on radeon 5000 cards or newer few gens too new. I did try with CRU but it did the same thing almost as if being overridden by the card itself.

gaming rig
(18 items)
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Intel Core i9 9900K
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HGST 2TB
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Seagate 2.5 Inch 2TB
Hard Drive
Samsung 860 EVO 1TB
Hard Drive
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LG Blu Ray drive
Power Supply
Corsair RM850i 850W
Cooling
Corsair H115i /W Modded backplate
Case
Corsair C70 Gunmetal
Operating System
windows 10 Pro
Monitor
MSI OPTIX MAG24C
Monitor
Acer XFA240 bmjdpr
Keyboard
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Razer Deathadder Elite
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post #4 of 7 (permalink) Old 07-20-2019, 10:12 PM
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Have you ever used that monitor at 120hz before? Maybe that monitor will only run 120hz at that resolution.
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post #5 of 7 (permalink) Old 07-20-2019, 10:18 PM - Thread Starter
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Quote: Originally Posted by treetops422 View Post
Have you ever used that monitor at 120hz before? Maybe that monitor will only run 120hz at that resolution.
i have, before my 1080 died i ran it at 144Hz and 120Hz (currently running it at 120Hz right now on my intel graphics).

gaming rig
(18 items)
CPU
Intel Core i9 9900K
Motherboard
GIGABYTE Z390 AORUS PRO
GPU
EVGA GTX 1080 Ti SC Black Edition.
RAM
G.SKILL Ripjaws V DDR4 3600MHz 16GB
Hard Drive
HGST 2TB
Hard Drive
Seagate 2.5 Inch 2TB
Hard Drive
Samsung 860 EVO 1TB
Hard Drive
Intel 660p NVME 512GB
Optical Drive
LG Blu Ray drive
Power Supply
Corsair RM850i 850W
Cooling
Corsair H115i /W Modded backplate
Case
Corsair C70 Gunmetal
Operating System
windows 10 Pro
Monitor
MSI OPTIX MAG24C
Monitor
Acer XFA240 bmjdpr
Keyboard
G.SKILL RIPJAWS KM780 MX
Mouse
Razer Deathadder Elite
Audio
Sound Blaster Z
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post #6 of 7 (permalink) Old 07-20-2019, 10:25 PM
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A DVI Dual Link Cable wouldn't have those limits

https://www.newegg.com/p/pl?d=dvi+dual+link+cable

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post #7 of 7 (permalink) Old 07-20-2019, 10:35 PM - Thread Starter
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Quote: Originally Posted by Rocklin View Post
A DVI Dual Link Cable wouldn't have those limits

https://www.newegg.com/p/pl?d=dvi+dual+link+cable
i have tested one and it still had the same result.

gaming rig
(18 items)
CPU
Intel Core i9 9900K
Motherboard
GIGABYTE Z390 AORUS PRO
GPU
EVGA GTX 1080 Ti SC Black Edition.
RAM
G.SKILL Ripjaws V DDR4 3600MHz 16GB
Hard Drive
HGST 2TB
Hard Drive
Seagate 2.5 Inch 2TB
Hard Drive
Samsung 860 EVO 1TB
Hard Drive
Intel 660p NVME 512GB
Optical Drive
LG Blu Ray drive
Power Supply
Corsair RM850i 850W
Cooling
Corsair H115i /W Modded backplate
Case
Corsair C70 Gunmetal
Operating System
windows 10 Pro
Monitor
MSI OPTIX MAG24C
Monitor
Acer XFA240 bmjdpr
Keyboard
G.SKILL RIPJAWS KM780 MX
Mouse
Razer Deathadder Elite
Audio
Sound Blaster Z
▲ hide details ▲
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