ASUS ROG Strix AMD B650E-I Gaming WiFi PCIe 5.0 DDR5 mini-ITX

beerglass007

beerglass007

beerglass007

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Looking to buy a ASUS ROG Strix AMD B650E-I Gaming WiFi PCIe 5.0 DDR5 mini-ITX to use with a 9800X3D and told the B650 chips might share the PCI 5 bus

So if I use the M2 PCI 5 slot it will reduce the GPU PCI 5 later on if and when I get a RTX 5XXXX card

Does anyone know if this mobo shares the PCI5 bus between PCI and M2 ?

Thanks
 
beerglass007 said:
Looking to buy a ASUS ROG Strix AMD B650E-I Gaming WiFi PCIe 5.0 DDR5 mini-ITX to use with a 9800X3D and told the B650 chips might share the PCI 5 bus

So if I use the M2 PCI 5 slot it will reduce the GPU PCI 5 later on if and when I get a RTX 5XXXX card

Does anyone know if this mobo shares the PCI5 bus between PCI and M2 ?

Thanks
Click to expand...

Nope it doesnt, they could have even made the slot on the back PCI-e 5 if they wanted to and still not had lane sharing, but my Mrs WD 850X alone gets hot in that slot, so I guess there were good reasons to only make it a PCI 4.0 M.2 slot.
 
Jamin280672 said:
Nope it doesnt, they could have even made the slot on the back PCI-e 5 if they wanted to and still not had lane sharing, but my Mrs WD 850X alone gets hot in that slot, so I guess there were good reasons to only make it a PCI 4.0 M.2 slot.
Click to expand...
Would you mind showing the OP a screenshot from CPU-Z of your GPU running with 16 lanes? I don't think he/she believes us :D
 
beerglass007 said:
LOL

I just heard from various people over the last few weeks that the B650E-I boards were bad for this

I want to be proved wrong and I'll buy it 8-)
Click to expand...
I've had a good look at the tech specs and the manual and I can't see anything, but it is certainly not unheard of for the manual to be wrong. If you can share the posts that talked about it, that could be helpful.

The only B650E board I'm aware of that sounds similar(ish) is the Strix B650E-E which does have lane sharing (if you use the third M.2 slot, the GPU runs with 8 lanes).
 
beerglass007 said:
LOL

I just heard from various people over the last few weeks that the B650E-I boards were bad for this

I want to be proved wrong and I'll buy it 8-)
Click to expand...

Sorry just got home from work, and nope they were wrong......sorry, excellent for RAM overclocks too, the GPU Slot is PCI 5.0 along with the front nvme slot and the rear nvme slot is PCI 4.0.

This is with GPU and both nvme slots populated

I love this board to be honest, if my Gene ever died I would buy one of these for myself.

Just for further info, Ryzen actually has 28 PCI 5.0 lanes but 4 are for the downstream to the chipset, so leaves 24 available to the user, generally on X670E and B650E these are used for 2 x nvme drives and a x16 GPU, or 8x8x GPU slots, everything else generally runs off the chipset (some boards lane share like the ASUS B650E-E)
X870 has completely changed this.....in my opinion for the worse as the USB4 needs 4 lanes which they stole from the CPU instead of the chipset, so now you still have 28 lanes, 4 for the downstream to the chipset, 4 for the USB4, leaving 20 available to the user, 16 for the GPU and 4 for the first nvme slot, any futher nvme's start lane sharing and cutting the GPU slots down to x8 or x8x4 if you have 2 GPU slots, the 3rd GPU x16 slot (if you have one) generally runs at PCI 4.0 x4 off the chipset but can also be lost depending on which M.2 slots you are using.

VtALWli.jpeg


Jf3Ax7b.jpeg
 
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Jamin280672 said:
Sorry just got home from work, and nope they were wrong......sorry, excellent for RAM overclocks too, the GPU Slot is PCI 5.0 along with the front nvme slot and the rear nvme slot is PCI 4.0.

This is with GPU and both nvme slots populated

I love this board to be honest, if my Gene ever died I would buy one of these for myself.

Just for further info, Ryzen actually has 28 PCI 5.0 lanes but 4 are for the downstream to the chipset, so leaves 24 available to the user, generally on X670E and B650E these are used for 2 x nvme drives and a x16 GPU, or 8x8x GPU slots, everything else generally runs off the chipset (some boards lane share like the ASUS B650E-E)
X870 has completely changed this.....in my opinion for the worse as the USB4 needs 4 lanes which they stole from the CPU instead of the chipset, so now you still have 28 lanes, 4 for the downstream to the chipset, 4 for the USB4, leaving 20 available to the user, 16 for the GPU and 4 for the first nvme slot, any futher nvme's start lane sharing and cutting the GPU slots down to x8 or x8x4 if you have 2 GPU slots, the 3rd GPU x16 slot (if you have one) generally runs at PCI 4.0 x4 off the chipset but can also be lost depending on which M.2 slots you are using.

VtALWli.jpeg


Jf3Ax7b.jpeg
Click to expand...


Ok thanks

So this board is good with a RTX4080, single GEN 4 SSD and 9800X3D ?
 
beerglass007 said:
Ok thanks

So this board is good with a RTX4080, single GEN 4 SSD and 9800X3D ?
Click to expand...

Yes perfect for it, it will need a bios update to support the 9800X3D but has USB flashback on it so can be done with just the board, USB stick and PSU, nothing else needed, one catch though, whilst trying to use USB flashback on my Mrs board, I had to convert the USB stick to MBR FAT32 instead of GPT to get it to read the bios file for the USB flashback port, the USB stick could pretty much be in any format to use EZFlash built into the bios but you will need a supported CPU and RAM for that.
 
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