3 ms·
At these kinds of bandwidths, it is extremely noisy. Remember socket AM4, which added support for PCIe 4.0 with chipset X570? Originally, the idea was that non
by crote 4y ago
At these kinds of bandwidths, it is extremely noisy.
Remember socket AM4, which added support for PCIe 4.0 with chipset X570? Originally, the idea was that non-X570 boards would also have PCIe 4.0, as it doesn't actually depend on the chipset - just the CPU. Turns out most boards simply weren't capable of handling the additional bandwidth, so it was eventually restricted to boards which were designed for it. And that's at one-eighth the bandwidth of PCIe 7.0!
- alias_neo 4y agoInteresting, I could have sworn when I bought my AsRock Rack X470 server board it was advertised as PCI-E 4.0 but their site quite clearly shows 3.0 checking now.
- WithinReason 4y agoI remember for some MBs there were BIOS updates that added 4.0 support, then later BIOS updates removed it.
- Zenst 4y agoIt gets down to the differential tracks connecting the PCIe lanes. Tollerance for PCIe3 compared to 4.0 may see tracks on a motherboard tollerant for 3.0 but fall short for 4.0. Higher the speed, the smallest difference in the length of the track routing pairs can see what works become less stable. Which would explain why some can do 4.0 and others not as well.