under construction! will build it step by step, be patient 
newest BIOS for X870(E)-Strix series you will get here, all credits goes to @safedisk for create BIOS-files for Asus and all creators for Excel spreadsheet:
Differences to X870E-Hero:
X870E-E supports up to
8000+MT/s(OC) with Ryzen™ 9000 Series CPUs, instead 8200+MT/s(OC)
8400+MT/s(OC) with Ryzen™ 8000 Series CPUs, instead 8600+MT/s(OC)
8000+MT/s(OC) with Ryzen™ 7000 Series CPUs, same like Hero
It's about the signal strength and the losses between important components on the motherboard. Its ONE garant for high OC.
BTW 8 are not the highest. The "godlike" from MSI will have 10. Its totaly crazy.
...
further differences without details to X870-Hero but not important for overclocking:
IMO if you want to pay a little less but still don't want to miss out on overclocking features, then the X870E-E is a very good choice
newest BIOS for X870(E)-Strix series you will get here, all credits goes to @safedisk for create BIOS-files for Asus and all creators for Excel spreadsheet:
Differences to X870E-Hero:
X870E-E supports up to
8000+MT/s(OC) with Ryzen™ 9000 Series CPUs, instead 8200+MT/s(OC)
8400+MT/s(OC) with Ryzen™ 8000 Series CPUs, instead 8600+MT/s(OC)
8000+MT/s(OC) with Ryzen™ 7000 Series CPUs, same like Hero
- 1 x PCIe 5.0 x16 slots (supports x16 mode), instead 2x 5.0
- 5K Black Metallic Capacitors, instead 10K with MicroFine alloy choke
- 1 x Realtek 5Gb Ethernet, instead 1 x Intel® 2.5Gb Ethernet and 1 x Realtek 5Gb Ethernet
- 1 x USB 20Gbps port (1 x USB Type-C® with up to 30W PD Fast-charge), instead 1 x USB 20Gbps (supports USB Type-C® with up to 60W PD/QC4+)
- NO Metal backplate
- same form factor like Hero (ATX)
- same PCB layers (8 with copper)
It's about the signal strength and the losses between important components on the motherboard. Its ONE garant for high OC.
BTW 8 are not the highest. The "godlike" from MSI will have 10. Its totaly crazy.
...
further differences without details to X870-Hero but not important for overclocking:
- Numbers of USB-Ports
- Soundchip
- Sound features
- I/O Ports back panel
- Internal I/O connectors
IMO if you want to pay a little less but still don't want to miss out on overclocking features, then the X870E-E is a very good choice