ASUS Intros New BIOS For Its AM5 800 & 600-Series Motherboards With Improved Security, Performance, Stability & Memory Compatibility

Hassan Mujtaba
•
Jan 30, 2026 at 11:50am EST
ASUS Intros New BIOS For Its AM5 800 & 600-Series Motherboards With Improved Security, Performance, Stability & Memory Compatibility 1

ASUS has introduced a new AGESA "Pre1.3.0.0" BIOS for its 800/600-series AM5 motherboards, which improves stability & performance.

ASUS Rolls Out New BIOS For 800/600-Series AM5 Motherboards, Which Improves Security, Performance, & Stability For Ryzen CPU

ASUS recently started investigating reports of AMD Ryzen CPU failures on its AM5 motherboards and has now rolled out the first new AGESA BIOS firmware update following the statement. The new BIOS is rolled out across a large selection of AM5 motherboards covering the 800-series and 600-series lineup.

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ASUS has not confirmed if this BIOS update addresses the issues that users were facing, but it does come with a large list of improvements, which include updation to the ComboAM5 PI_Pre 1.3.0.0 firmware that offers better security, enhanced system performance and stability, and improved memory compatibility for JEDEC-compliant modules.

The company is also offering an update on the memory side with a new feature called M_Ordering or Bank Refresh mode, which is a memory controller policy that controls how DDR5 refresh is handheld & which refresh timing paths are allowed to be used.

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Previously, the M_Ordering mode was set to Normal by default while in the newer BIOS (AGESA 1.2.8.0+ / 1.2.9.0 / 1.3.0.0), this mode is changed to relaxed, so it will cause some memory profiles to become unstable, leading to WHEA errors, app/game crashes, and the company has a guide for users to help them tune their memory profiles here:

My previous profile is now unstable!

Tight refresh values can result in an increased chance of boot failures, WHEA errors, app or game crashes if tRFC2 / tRFCsb are too aggressive, because the IMC now actually enforces them. Previously, these values were ignored.

Rule for continuity 

  • Set tRFC1 = tRFC2
  • Use that value as the same “tRFC target” you previously used as tRFC1 on pre-AGESA 1.2.8.0 behaviour.

This reduces the chance you unknowingly carry over a profile that was tuned assuming only one refresh path would be exercised.

Relaxed doesn't = free performance.

Relaxed does not magically allow lower tRFC. It won’t let you run “tighter” refresh recovery than Normal simply by flipping the mode. It’s essential to test DRAM and system stability, regardless of which mode offers the best performance for your workload.

Ok, so what is best for performance?

Your mileage may vary, but I and others have found the best performance is generally with Normal for gaming. You may find raw bandwidth improves with Relaxed, but this does not translate to real-world performance.

Conclusion

Ultimately, Normal is the better default for a gaming-focused system: it tends to deliver the most consistent real-world performance. Relaxed can show small bandwidth gains and better latency in synthetic memory tools (and you may see that echoed in tests like Karhu), but this doesn't always translate into better gaming performance, and the differences are typically marginal. If you don’t specifically need mixed refresh behaviour (i.e., you don’t want tRFCsb in play), stick to Normal for clarity, consistency, and easier cross-BIOS comparisons.

With that said, users can try the new BIOS from the links given below, or they can find the new BIOS for their respective motherboards at the support site.

ROG CROSSHAIR/STRIX/PROART/TUF X870 Series Beta Bios 2004

ROG STRIX/TUF B850 Series Beta Bios 1626

ROG CROSSHAIR/STRIX/PROART/TUF X670 Series Beta Bios 3513

ROG STRIX/TUF/PROART B650 Series Beta Bios 3826

News Sources: Uniko's Hardware , HXL

About the author: A Software Engineer by training and a PC enthusiast by passion, Hassan Mujtaba serves as Wccftech's Senior Editor for hardware section. With years of experience in the industry, he specializes in deep-dive technical analysis of next-generation CPU and GPU architectures, motherboards, and cooling solutions. His work involves not only breaking news on upcoming technologies but also extensive hands-on reviews and benchmarking.

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