The Ghost String Riser is either made by Amphenol or using Amphenol tech (see
Amphenol link). Amphenol is trying to bypass 3M patent.
Compare to the 3M, this Amphenol Riser:
1. will be thicker = bigger bend radius = may interfere with fans under the Mobo
2. unlikely to perform better
3. unlikely to be cheaper than 3M
4. when I tested it, it's hotter to the touch than 3M, b/c it doesn't have that silver heat shield material that 3M has
5. 3M PCIe 4.0 is around the corner
Unless you specifically want this riser for the look, I stay away and stick with 3M.