Hi everyone,

I’m currently evaluating BIOS modding options for the Asus RTX 5080 Prime OC, and I’ve come across the following BIOS variant:

🔗TechPowerUp – Astral OC BIOS (98.03.3B.40.B7)
98.03.3B.C0.AS36 – 450w power limit
https://www.techpowerup.com/vgabios/274777/274777

Key Specs:

  • Subsystem ID: 1043 89DE (same as Prime)
  • Boost Clock: 2760 MHz
  • Memory Support: GDDR7 (Hynix & Samsung)
  • Thermal target: 88°C | Max: 105°C
  • Power Limit: 450W

What I’m looking for: If you own an Asus Prime RTX 5080, and have flashed this exact BIOS, I’d love to know:

  • Your original and flashed subsystem ID
  • Detected memory vendor (Hynix or Samsung)
  • Whether display output worked right after flash
  • Stability results (synthetic and gaming)
  • Any boost/performance gains—or regressions

I'm doing this to build a verified flashing guide for Prime users, especially those with dual BIOS setups looking for safe OC profiles without risking a black screen or hardware lockout.

Thanks!

1 Comment

  1. Puzzleheaded_Ad_6773

    I have the 5080 tuf oc and flashed it with the 450 watt bios from the astral 5080 lets me put the power slider to 125% definitely helped with keeping higher overclock stable on my 5080 which I didn’t expect but I guess it makes sense because it can draw more power

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