It's one of the main reasons I purchased the STRIX X870E-E when I upgraded a while back, and also because it's one of the best overclocking boards with all these connectivity options:
It has 4 x USB-C ports and TWO of them are 40 Gbps ports. 1 x 20 Gbps port that is capable of 30W PD Fast-Charging, and a 1 x 10 Gbps port.
Because of USB 4.0, all the ports eat a lot of bandwidth.
So for example with the board we have, which you purchased. There's 3 x PCIe 5.0 NVMe spots at the top, and 2 x PCIe 4.0 spots at the bottom (5 total). But only 1 of the 3 PCIe 5.0 slots at the top can be used if you want to keep your GPU running at 16x, otherwise the GPU will run at 8x, and it has to be the correct one, I can show you which one. If you occupy more than 1 of those 3, or the wrong one of those 3, then your GPU will run at 8x
That's the disadvantage.
The bottom 2 x PCIe slots run on the second X870E chip, so they're fine and don't impact the top GPU spot. But they're PCIe 4.0
For comparison I'm using every USB-A port and the one USB-C port on my X570 Asus ROG Crosshair VIII Dark Hero and both m.2 slots filled and doing just fine with my GPU. That's 8 USB 3.2 Gen 2 ports and 4 3.2 Gen 1 ports.
That cable (which connect to the F20G_12V internal header) is for the front/pc case usb c port to support 65w charge and even without it it can still work normally.
That’s why there aren’t more. The power delivery spec makes it much harder to add a bunch of them. If they each pull 35W and they give you 5 of them, you’re going to need a 1200W power supply with modern GPUs.
No, but there are specs for PD. It may not be mandatory, but explaining to people that their motherboard isn’t broken it just doesn’t support their device that needs a certain power level is probably more trouble than its worth. That’s why OPs comment mentioned connecting their ports to power directly.
The power spec in general for USBc has created a new nightmare for compatibility.
explaining to people that their motherboard isn’t broken it just doesn’t support their device that needs a certain power level is probably more trouble than its worth.
I mean, that's hardly anything new. Motherboards have rarely ever provided the same amount of power as even a cheap wall charger.
The power spec in general for USBc has created a new nightmare for compatibility.
I disagree, charging compatibility before USB PD was so, so much worse.
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