AMD Zen 2 (Ryzen 3000) - *** NO COMPETITOR HINTING ***

[4K8KW10]

"This more or less confirms that PCIe 4.0 support will be available on existing AM4 boards but there’s a catch.

While there’s support for PCIe Gen 4.0 on current motherboards, it is only possible with the AMD Ryzen 3000 series processors using the Zen 2 core architecture and even then, only the first PCIe x16 slot is said to be compatible with Gen 4.0 speeds as that operates over the CPU PCI-Express lanes while the rest of the slots would still function over the PCH which are only PCIe 3.0 compliant and we can also expect a single M.2 port to run at PCIe 4 speeds. That’ll mostly vary from board to board."

https://wccftech.com/gigabyte-bios-update-pcie-4-am4-motherboards-amd-ryzen-3000-cpus/

 

[Orcvader]

That's to be expected, earlier SB boards were like that where PCIe 3.0 was available for those who upgraded to IB, but only for the first slot controlled by the CPU, while the chipset's lanes were still PCIe 2.

 

[LukieBoy007]

Noob question here but can someone explain what real-world benefit would I expect from having PCIe 4 over PCIe 3?

 

[narta]

Noob question here but can someone explain what real-world benefit would I expect from having PCIe 4 over PCIe 3?

Bandwidth

 

[Murphy]

Noob question here but can someone explain what real-world benefit would I expect from having PCIe 4 over PCIe 3?

Very little to none, I guess if you wanted to run 2-3 NVME drives in a raid config it would help but your 'average' (one GPU, one NVM drive) Jo probably won't see any real-world benefit.

 

[Wingz]

Noob question here but can someone explain what real-world benefit would I expect from having PCIe 4 over PCIe 3?

Right now it'll only benefit NVME drives

 

[Jokester]

High end GPUs might be marginally quicker and as above if you’re using NVMe drives you’ll see higher transfer rates if you were saturating a PCI-E3 bus before.

 

[pandem0nium]

Hopefully the PCIe 4.0 upgrade also applies to the the m.2 slot that uses cpu lanes.

 

[Silent_Scone]

High end GPUs might be marginally quicker and as above if you’re using NVMe drives you’ll see higher transfer rates if you were saturating a PCI-E3 bus before.

RAID performance. Nom Nom.

 

[cletuscassidy]

Shouldn’t there also be an SLI/CrossFire benefit? Even if X570 runs at 2 x 8x PCIE4 that is equivalent to 2 x 16X PCI-E 3.

 

[MaXxBoulton]

Hopefully the PCIe 4.0 upgrade also applies to the the m.2 slot that uses cpu lanes.

In general use your not using the 3.0 x4 you already have. So pcie4 would make no real world benefit.
Servers/heavy drive usage systems would benefit

 

[MaXxBoulton]

Shouldn’t there also be an SLI/CrossFire benefit? Even if X570 runs at 2 x 8x PCIE4 that is equivalent to 2 x 16X PCI-E 3.

No a gpu @ x8 runs the same as x16 On pcie3
Also most games don't use the second you anyways.

 

[kjab3068]

I'd buy the 2600 TBH. You can pair it with a decent B450 motherboard or if you've got some money a decent X470. Comes with a cooler so you're good to go. For what you use it for not worth waiting for Zen 2. Plus any mobo you buy now will support Ryzen chips until 2020 so you've got an upgrade path. I've just bought a 2700 with an Asus Prime X470 Pro and it already has a new bios for Zen 2. Happy days.

Well I bought the 2600 for 130 inc free games. Won’t open it and if zen 2 arrives, cheap and likely to be well stocked it can always go back unopened! Tbh I think you are right that for my use zen2 is unnecessary...

 

[Poneros]

https://www.techpowerup.com/255729/...-diagram-revealed-chipset-puts-out-pcie-gen-4

Spoiler: lame duck 24 lanes

 

[LePhuronn]

^^ lame duck? Explain. With the briefest of glances it looks fine to me for a mainstream-level system.

2 GPUs get the equivalent of PCIe3 x16 each, 1 full speed M.2 drive off the CPU, another one off the PCH, a 3rd one at the expense of SATA by the looks of it, handful of x1 slots for whatever and some left over to wrangle together your USB and WiFi.

 

[almoststew1990]

Very little to none, I guess if you wanted to run 2-3 NVME drives in a raid config it would help but your 'average' (one GPU, one NVM drive) Jo probably won't see any real-world benefit.

What about my likely usage - A GPU, two m.2 slots and a PCI x4 WiFi adapter? I think that adds up to 28 lanes?

 

[MassiveJim]

What about my likely usage - A GPU, two m.2 slots and a PCI x4 WiFi adapter? I think that adds up to 28 lanes?

there is no way a wifi adapter can saturate 4 x PCI-E lanes though ?

 

[LukieBoy007]

Cheers for the replies about PCIe 4 vs 3 guys
Basically zero difference to me then, I don't even have an NVME drive...

 

[d_brennen]

It's an unofficial block diagram, let's not lose our heads guys.

PCIe 4 has bundles of bandwidth, there's the chipset too (also bandwidth doubled). Your WiFi cards are safe

Not sure what @Poneros is looking for tbh? Breaking compatibility with 3 and 4 series chipsets?

 

[Panos]

Hopefully the PCIe 4.0 upgrade also applies to the the m.2 slot that uses cpu lanes.

We shall see because if we can use the NVME extension cards we can hook 4 of them on PCIe slot 2, and have the GPU running at 4.0 8x which is effectively 16x PCIe 3.0
Also the X570 chipset (PCH) provides pcie 4.0 connections
https://www.techpowerup.com/255729/...-diagram-revealed-chipset-puts-out-pcie-gen-4

The Asrock Quad M.2 card might get used extensively now