Quote from: NikoB on August 04, 2022, 13:04:00Unless of course it is full of 80gbit/s in 7xxx. But to serve such a port, you need a memory at least 100, but rather 120GBytes/s throughput. Otherwise, 8k monitors will lag, how 4K monitors lag when connecting to igpu on single-channel mode..

I think you're confusing bits and bytes here. You don't need 120 GBytes/s memory to feed an 80 GBits/s port.

Plus, even DDR4 is capable of 3200 MTransfers/s × 64 bits/Transfer = 204.8 Gbits/s _per channel_, so memory speed hasn't been the bottleneck for quite a while. You wouldn't be able to _much_ at 8k 80Gbps with only one 200 Gbps DDR4 memory channel, but it would successfully drive the display.

DDR5 and GDDR6 are each faster again, so from a pure _memory bandwidth_ point of view, it'll be fine.

Driving 8k from an iGPU showing anything but a static image though will be tough as it takes a stupid amount of processor power to render an image of that size. That is of course unrelated to memory bandwidth.

The main achievement of the 7xxx series, according to the news on NB - official certification on Display Port 2.0. We have been waiting for this for 3 years! This is eternity in the IT industry. Moreover, to the shame of AMD/NVIDIA, they did not introduce the DP2.0 standard in 2020, although discrete cards were certainly ready for this with their GDDR6 and HBM memory. And they did not introduce DP2.0 even in 2021...
Unless of course it is full of 80gbit/s in 7xxx. But to serve such a port, you need a memory at least 100, but rather 120GBytes/s throughput. Otherwise, 8k monitors will lag, how 4K monitors lag when connecting to igpu on single-channel mode..