Ryzen 4000 Laptops & eGPUs
@zovc I don’t think it’s likely we’ll see many Zen 2/Ryzen 4000 laptops with Thunderbolt 3, and they still wouldn’t have the Thunderbolt controller built into the CPU like in Intel’s Ice Lake laptops, so you still wouldn’t get the same level of eGPU performance.
However, AMD’s Zen 3/Ryzen 5000 is rumoured to release by the end of this year, with USB-4 support (which should include Thunderbolt 3 compatibility). So maybe by CES 2021 we could be seeing good AMD-based options for eGPU builds.
@nando4, Based on your bullet points this sparked my curiosity, with my 3500u Motile laptop, the internal display turns off with eGPU connected over M.2, there is a bios mod with option to change hybrid graphics option, should I give it a try in a sense that this behavior is based on BIOS not APU behavior?
Would really appreciate any response, thank you!
PS: You helped me to get my GTX470 working with my VAIO VPCEB12 express card 10 years ago 😉
@tmashpotatos, suggest hide the eGPU from the BIOS using eGPU adapter switches like CLKRUN/PERST so the BIOS configures your iGPU/dGPU as if the eGPU isn't attached. More details at:
I just Googled "AMD Thunderbolt motherboards" and it seems that the only two in existence right now are the AsRock Phantom Gaming ITX/TB3 and Gigabyte TRX40 Designare.
This means that OEM partners like Gigabyte can probably add TB3 or TB4 support into laptops, but one has to wonder if they would charge an $50 (which is reasonable) or $100 extra for what would currently be an uncommon line of Ryzen laptops with Thunderbolt?
On the flip side, it's suspected that Ryzen 5000 laptops in the coming year will support USB 4.0 which if a reality means that we will see AMD laptop SKUs with Thunderbolt 3/4 functionality without the branding.
@results45, unfortunately TB3 interoperability with USB4.0 implementations is optional for hosts and peripherals. Hopefully we will see some AMD laptops using it, but it's difficult to get it right without compatibility issues.
@odin, If the host supports PCIe tunnelling but doesn't support Thunderbolt devices, then you can connect a Thunderbolt device to a USB4 hub to make it work.
@joevt, We can hope! I'm not too keen to spend more money to get a hub just to connect an eGPU. I'd probably side with going Tiger Lake in that case.
@odin, In light of 8-core Tiger Lake SKUs releasing in December/January, would you hold your wallet for one more year until Alder Lake drops? Cuz it will support PCIe Gen 4 (would it only matter if using an eGPU via a M.2 slot?). Other rumors in the mill say that it might support DDR5 and PCIe Gen 5, but I'm betting that that only applies to desktop CPUs if they're true at all.