MrCommunistGen Posted November 17, 2020 Share Posted November 17, 2020 I'm pretty sure this has been a long standing issue, not one introduced by a recent update. I don't know whether the on-package I/O die's PCIe capabilities are hardcoded or have to be detected for 400-series chipset boards (PCIe 3.0) vs 500-series chipset boards (PCIe 4.0), but at least on my ASUS ROG STRIX B450-I motherboard, the lanes are reported back as being PCIe 2.0 despite the fact that they're configured to 3.0 in BIOS and that I've observed that they're not actually running at 2.0 speeds. SSD bandwidth reads at greater than the 2GB/s they'd be capped to if the drives were actually running at 2.0 speeds, and GPU PCIe bandwidth comes in at higher than the 4GB/s that it would be capped to were it running at 2.0 speeds. As is often the case when I point out irregularities on an ASUS board, if the issue is down to their WMI interface, just let me know and I'll just ignore the incorrect values. Quote Link to comment Share on other sites More sharing options...
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