This might be significant as it's the first OoO RISC-V core to be generally available.

https://www.aliexpress.us/item/3256803209663707.html

It's also been open source (without the vector unit) for a similar amount of time:

https://github.com/T-head-Semi/openc910

This board certainly marks a big improvement in price/performance for C910 boards, and a significant performance improvement over the VisionFive 2 also, at an only slightly higher price.

No M.2 slot seems to be the only disadvantage. The TH1520 SoC apparently doesn't have PCIe at all. The SG2042 SoC has 64 C910 cores and 32 lanes of PCIe gen 4.