Question Best motherboard for AI/Gaming pc with AMD Ryzen 9 9950X3d

[pwrreset]

I bought a AMD Ryzen 9 9950X3d for my new build, I'm looking for a motherboard for it but it's really confusing, there's so much options and they're not labelled the same from on constructor to another.

My base requirements:

192GB of DDR5 RAM (as fast as possible but chances are I'm going to replace it later this year as they announced faster ram later this year, I think max speed right now is 5200, but it must support 8000). Good for 2 GPU (I have a 4090 RTX, I will buy a second card with a lot of VRAM to add to the second slot). I haven't seen dual x16 lanes motherboard, not sure why. Bluetooth, LAN, Wi-Fi (anything recent is going to be sufficient)

I was looking at the ASRock X870E TAICHI AM5 AMD X870E SATA 6Gb/s Extended ATX Motherboard (around 450$ US) but it looks like an old model, I wonder if there are better recent ones.

Also if you have a similar build and can recommend good RAM.

 

[QyInvoLing]

Pick MSI x670e carbon, it can run two graphics cards, each on PCIe5.0x8 which is good for 2 GPU, and it's capable for 192GB D5 RAM.

 

[Lutfij]

I was looking at the ASRock X870E TAICHI AM5 AMD X870E SATA 6Gb/s Extended ATX Motherboard (around 450$ US) But it looks like an old model, I wonder if there are better recent ones.
It's not old, in fact the X670 is the older chipset, the X870 was recently released, prior to the B850 chipset.

I haven't seen dual x16 lanes motherboard, not sure why. Bluetooth, LAN, Wi-Fi (anything recent is going to be sufficient)
Dual GPU setups are long dead, this is why motherboard makers have opted out of the second PCIe slot having 16 lanes. The most you'll see a second PCIe16 slot is wired for 8 lanes.

Also if you have a similar build and can recommend good RAM.
Any ram that's DDR5-6000MHz or DDR5-6400MHz with tight latencies, dual channel and has AMD's E.X.P.O advertised on it will do.

 

[pwrreset]

I was looking at the ASRock X870E TAICHI AM5 AMD X870E SATA 6Gb/s Extended ATX Motherboard (around 450$ US) But it looks like an old model, I wonder if there are better recent ones.
It's not old, in fact the X670 is the older chipset, the X870 was recently released, prior to the B850 chipset.

I haven't seen dual x16 lanes motherboard, not sure why. Bluetooth, LAN, Wi-Fi (anything recent is going to be sufficient)
Dual GPU setups are long dead, this is why motherboard makers have opted out of the second PCIe slot having 16 lanes. The most you'll see a second PCIe16 slot is wired for 8 lanes.

Also if you have a similar build and can recommend good RAM.
Any ram that's DDR5-6000MHz or DDR5-6400MHz with tight latencies, dual channel and has AMD's E.X.P.O advertised on it will do.

So the TAICHI is better than the MSI Carbon suggested? that's good because it is cheaper.

Is the first GPU downgraded to 8 lanes on the TAICHI if I put a second GPU?

 

[QyInvoLing]

So the TAICHI is better than the MSI Carbon suggested? that's good because it is cheaper.

I can't simply tell which one is better, if I'm you, I'll pick the cheaper one.

Is the first GPU downgraded to 8 lanes on the TAICHI if I put a second GPU?

Yes.
But x870e taichi's second PCIe slot is too low, after installing a graphics card into it, you'll find that all the slots behind it will be blocked. It's a great defect

 

[pwrreset]

I can't simply tell which one is better, if I'm you, I'll pick the cheaper one.

Yes.
But x870e taichi's second PCIe slot is too low, after installing a graphics card into it, you'll find that all the slots behind it will be blocked. It's a great defect

I've read that I could use a riser for the second GPU. I'm not sure it's practical but it's an option.

I've made more extended research, I'm starting to understand what makes them different.

Other than onboard design, I noted:
-PCI_E1 is
TAICHI dedicated bandwidth (better)
CARBON shared with m.2
-RAM is
TAICHI ECC (better for AI according to chat-GPT)
CARBON NON-ECC

I'm not sure if it is possible to find ECC RAM, I don't see any on newegg.

Only RAM I found that is AMD EXPO is
G.SKILL Flare X5 96GB (2 x 48GB) 288-Pin PC RAM DDR5 6000 (PC5 48000)

It is quite far from the 192GB I want and a downgrade from my current 128GB, but there's a video of someone using G.SKILL Trident Z5 RGB Series (Intel XMP 3.0) DDR5 RAM 96GB (2x48GB) 6400MT/s to

View: https://www.youtube.com/watch?v=_WO1ybPs9E8


I might be able to do the same thing with the flare. But there's a difference between 'working' and 'stable when pushed to the limit'.

Wouldn't CORSAIR Vengeance RGB 192GB (4 x 48GB) 288-Pin PC RAM DDR5 5200 (PC5 41600) be more stable even if it's not AMD EXPO?