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Navi , Polaris succesor to launch on Q3 2019
Shmerl commented on 26 May 2019 at 6:41 pm UTC

AMD should make an announcement about Navi on Computex in Taipei (Monday 10:00 Taipei time / Monday 02:00 UTC / Sunday 22:00 Eastern Time in US).

I wonder if Navi cards will use PCIe 4, and will this require new motherboards for full performance?

Dedale commented on 26 May 2019 at 7:39 pm UTC

That would be a bit surprising since they said themselves they would target the middle of the market with it and not the high performance one. And since most DO NOT have PCIE4 it would hamper the sale of the cards.

Shmerl commented on 26 May 2019 at 9:23 pm UTC

I've read somewhere, that motherboards that officially supported PCIe 3 could in theory support PCIe 4 with a firmware update. But that remains to be seen.

Shmerl commented on 27 May 2019 at 4:18 am UTC

https://www.anandtech.com/show/14412/amd-teases-first-navi-gpu-products-rx-5700-series-in-july-25-improved-perf

Quotethe new Navi parts support PCI Express 4.0 as well. This will actually be AMD's second GPU with PCIe 4.0 functionality – Vega 20 was first, but it's only enabled in the Radeon Instinct parts – so this is the first time it's enabled in a consumer part.

Of the RX 5000 cards, the first series will be the RX 5700. These will be launching in July.

More details on performance and such are coming on June 10th.

chancho_zombie commented on 27 May 2019 at 7:05 pm UTC

looking at the computex keynote.

Is this true? 69% performance improvement over PCIE 4 ? crazy

https://youtu.be/7vv4lwq-ZCw?t=1h48m27s

Shmerl commented on 27 May 2019 at 7:07 pm UTC

chancho_zombielooking at the computex keynote.

Is this true? 69% performance improvement over PCIE 4 ? crazy

https://youtu.be/7vv4lwq-ZCw?t=1h48m27s

Interesting. I thought the bottleneck is the GPU itself, not so much the PCIe connection. But sounds like the later affects it too. Could be a good reason to invest in X570 motherboard. I wonder if X370 one can handle PCIe 4 with simply a firmware update, or it does require a new chipset.

chancho_zombie commented on 27 May 2019 at 7:09 pm UTC

ShmerlI've read somewhere, that motherboards that officially supported PCIe 3 could in theory support PCIe 4 with a firmware update. But that remains to be seen.

interesting do Ryzen 2nd gen and 1st gen support PCIE 4 in theory? suppose I throw that CPU into a new motherboard?

Shmerl commented on 27 May 2019 at 7:11 pm UTC

chancho_zombieinteresting do Ryzen 2nd gen a 1st gen support PCIE 4 in theory? suppose I throw that CPU into a new motherboard?

I think you'd need the upcoming Zen 2 to get PCIe 4, even if older motherboard can handle it. That controller is in the CPU.

Shmerl commented on 27 May 2019 at 7:14 pm UTC

https://www.anandtech.com/show/14406/amd-reveals-the-x570-chipset-pcie-4-is-here

They mention X470 supporting PCIe 4 in a limited way. Not sure about X370. Another point is increased TDP of the X570 chipset which requires active cooling. Sounds like more noise is coming.

chancho_zombie commented on 27 May 2019 at 7:15 pm UTC

Shmerl
chancho_zombieinteresting do Ryzen 2nd gen a 1st gen support PCIE 4 in theory? suppose I throw that CPU into a new motherboard?

I think you'd need the upcoming Zen 2 to get PCIe 4, even if older motherboard can handle it. That controller is in the CPU.

I don't care about the motherboard frankly, is the cheapest part of a PC. I think I bought this B350 for about 150usd and it's an excellent motherboard, I still supposedly can put a ryzen 3900x on this if AMD keeps their promise.

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