Asus X870E and Ryzen 9900X iGPU multi monitor output

[pschweig]

Hi

Hope this is the right forum for this as it kind of falls between CPU and MOBO. I'm coming up to new PC time and it doesn't look like the GPU situation will improve soon so I might build the PC without GPU and add one in at a later date.

I want to drive 2 monitors daisy chained from the PC and I'm struggling to find the exact specification of the displays that the iGPU will support. I'm considering a Dell monitor and its manual lists various DP Alt mode speeds and which displays will be supported e.g. USB-C (Alt Mode HBR3 8.1G)(4Lane DSC) can drive 2 4K 120Hz displays daisy chained.

Does anyone know what the specs are for the 9900X iGPU are? Does it support USB-C (Alt Mode HBR3 8.1G)?

Also the ASUS ROG STRIX X870E-E has 2 USB4 40Gb port with DisplayPort. Will either of those just work as soon as the PC is built? Or do I need to enable something or choose one of the ports?

thanks
Paul

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[Tetras]

If it helps, in an Anandtech article they say:

Besides enabling basic pixel processing, the other major function of the Ryzen 7000 iGPU is to enable all of the video decoding and video output functionality expected from a modern GPU. As this part is derived from the integrated GPU that when into Ryzen 6000 Mobile (Rembrandt), it comes with a very familiar feature set. That includes AV1, HEVC, and H.264 video decoding, as well as HEVC and H.264 video encoding. And, as AMD is keen to point out, these video encode/decode blocks remain accessible even with a discrete GPU in play; so unless a user outright disables the iGPU, every Ryzen 7000 system will have access to a modern suite of video encode and decode features.

Meanwhile on the display controller side of matters, this is the block that’s enabling Ryzen 7000 CPUs to drive up to 4 4K@60Hz displays. The iGPU display controllers can drive HDMI 2.1 up to its maximum 48Gbps data rate, or it can drive a DisplayPort 2.0 output at up to the UHBR10 data rate (a feature not even found on NVIDIA’s forthcoming RTX 40 series cards). And as mentioned previously when talking about motherboards and chipsets, motherboard vendors will have the option of exposing these DP outputs either via USB-C alt mode, or by implementing fixed DisplayPorts. All of which, in turn, can be used as active display outputs even if a discrete video card is installed, via AMD’s new hybrid graphics mode.

AMD Zen 4 Ryzen 9 7950X and Ryzen 5 7600X Review: Retaking The High-End

www.anandtech.com

I believe the 9000 series IGP is the same.