News AMD's Upcoming Socket AM5 for Raphael Processors to Lack PCIe 5.0 Support

[escksu]

We are only just now starting to see competition in PCIe 4.0 peripherals, and the benefits are really not that great over PCIe 3.0 for 95% of people. By the time the market is saturated, like we are now with PCIe 3.0 devices, PCIe 6.0 or 7.0 will be talked about as the latest and greatest. Focusing on one standard, and getting it right, will benefit the market a lot more than trying to implement the latest and greatest iteration. If AMD skips PCIe 5.0 till AM6 (or even AM7?), I don't think it will have much impact on their bottom line.

Look beyond peripherals. With pcie 5.0, you now need just 4 lanes to achieve same bandwidth as 16 lanes of pcie 3.0, you also need just 2 lanes on your nvme drive to ahcieve 4x pcie 4.0. now your cpu and chip has a 4x pcie 5.0 link thats equivalent to 8x pcie 4.0. it goes beyond PC.

That 4x link is a major bottleneck for the x570 chipset.

 

[escksu]

AMD used Infinity Fabric, not PCIe for that interconnect. If anything, AMD is really gearing up to just have PCIe hang off an Infinity Architecture system design where there is a system fabric that everything links into. Look into the Gen-Z Consortium for more information on this approach.

Wrong, AMD is using PCIE. The connection between Ryzen and x570 chipset its PCIE 4.0 x4. Thats why Ryzen has 24 lanes. 16 lanes for GPU, 4 for SSD and 4 for chipset. B550 is using PCIE 3.0 x4 while B450 is PCIE2.0 x4.

 

[Krotow]

As I understood from learning about AM5, the real cause why it was made is larger power draw support for CPU.

 

[Deleted member 431422]

We are only just now starting to see competition in PCIe 4.0 peripherals, and the benefits are really not that great over PCIe 3.0 for 95% of people. By the time the market is saturated, like we are now with PCIe 3.0 devices, PCIe 6.0 or 7.0 will be talked about as the latest and greatest. Focusing on one standard, and getting it right, will benefit the market a lot more than trying to implement the latest and greatest iteration. If AMD skips PCIe 5.0 till AM6 (or even AM7?), I don't think it will have much impact on their bottom line.

I'd prefer it done properly as well. I own ASRock B450M Steel Legend and there's at least $50 premium to B550M Steel Legend for PCIe 4.0 lanes which are of no use to me, even in the foreseeable future. The only thing I'd benefit from is higher memory speed support, but that's limited by my current APU so that's that. I'll either buy Ryzen 5 5600G in the future or wait for AM5 APU's.

 

[Deleted member 431422]

Nobody needs pcie 4.0 when it was first launched by AMD.....

There wasn't anything on the consumer market to utilize it, at that time.