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2x 4K 120Hz 10bit monitor for dual hdmi 9070XT?

Joined
Apr 21, 2025
Messages
6 (0.19/day)
Location
China
Processor AMD Ryzen R9 9950X3D
Motherboard MSI MPG X670E CARBON WIFI
Cooling COOLLEO P60T+ProArtist H12PE
Memory Kingston FURY DDR5 6000 C30 16G*2
Video Card(s) VASTARMOR RX 6900 XT SUPER ALLOY
Storage Samsung SZ1735 800G+PM1733 3.84T+SM883 960G
Display(s) Dell UltraSharp U2725QE
Case Fractal Design Define 7
Audio Device(s) Creative Sound Blaster AE-9+KRK GoAux 4
Power Supply EVGA 1000G3
Mouse Logitech G502 LIGHTSPEED
Keyboard Leopold FC980M BT LIGHTSPEED mod
Software Windows 11 24H2
I have two DELL U2725QE which have HDMI 2.1 with VRR support and DP 1.4.

Now I want to buy a RX 9070XT and found there're some models (like Sapphire and GIGABYTE) have dual HDMI.

I wonder if I can connect two monitors to 9070XT via HDMI at the same time, both 4K 120Hz 10bit RGB 4:4:4?

I found someone failed on a Sapphire card:https://www.techpowerup.com/forums/...h-displays-144-and-120-hz-not-working.333846/
 
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I have two DELL U2725QE which have HDMI 2.1 with VRR support and DP 1.4.

Now I want to buy a RX 9070XT and found there's some models (like Sapphire and GIGABYTE) have dual HDMI.

I wonder if I can connect two monitors to 9070XT via HDMI at the same time, both 4K 120Hz 10bit RGB 4:4:4?

I found someone failed on a Sapphire card:https://www.techpowerup.com/forums/...h-displays-144-and-120-hz-not-working.333846/
Because they are 2 totally different ones with different refresh rates. C2 and C4, come on now.
 
Because they are 2 totally different ones with different refresh rates. C2 and C4, come on now.
I found the AMD vendor on the Overclockers UK forum said there's a HW limitation that the second HDMI will have its resolution reduced below pixel clock of 600 MHz (ex. 4K60 444 / 4K120 420 max resolution). But I'm not sure it's only happened with Sapphire Pulse or all dual HDMI models.
But I found a temporal solution now: most X670E MB has a HDMI 2.1 port and I can connect one monitor to it.
 
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