Tomahawk x570 does not recover from invalid RAM settings

jwend170155202de

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Nov 26, 2020
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I just received my new x570 Tomahawk and tried to set my RAM timings and frequency (first using XMP and then manually). I noticed that the board does not restore to the default BIOS settings automatically for invalid RAM settings and I have to do a CMOS reset by removing the battery manually for each failed attempt. This is particularly tedious since the CMOS battery is hidden by my graphics card.

I also own a B450 Gaming Carbon Pro which does in fact default to the factory settings after a few failed boot attempts. I would've expected a higher end board to have this convenience feature as well.

Does the x570 Tomahawk really not have this feature or am I missing some setting here?
 

fatedust

Survey Corps
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Apr 9, 2020
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Maybe the Memory Failure Retry is disabled?
You can find it in BIOS by going to OC > Memory Failure Retry > Enabled.
 

jwend170155202de

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Nov 26, 2020
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Memory Failure Retry seems to be enabled (it is also enabled after doing a CMOS reset, so I guess it's the default). I also found that the behaviour is the same for both boards for any frequency below 3200MHz, meaning that the Tomahawk properly resets the BIOS for those frequencies. Only when I use 3200MHz , the Tomahawk fails to reset. Weirdly enough with the same settings @3200MHz, the B450 Gaming Carbon Pro resets after a few attempts to boot. Maybe worth mentioning that the Tomahawk does not even attempt to reboot but just remains powered on doing nothing when RAM frequency is set to 3200Mhz.
 

ssateneth

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Sep 5, 2013
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MSI boards in my experience don't handle bad ram settings well. Rather, for me, in general, AMD boards dont handle bad RAM settings. I have an MSI X570-A Pro, MSI MPG X570 GAMING PRO CARBON WIFI, and MSI MEG X570 GODLIKE. Depending which ram timings is bad, it may do 3 beeps, indicating a successful detection of a bad RAM timings, reboot, and try as many times as it is set up in BIOS before reverting to bios defaults. But most timings (just about anything that isn't one of the 4 primary timings) just cannot get out of a bad setup and need CMOS reset to recover.

I also have a GIGABYTE X570 AORUS ELITE. It handles bad ram timings slightly better but it's about 50/50 if it recovers on its own or it hangs during POST and need a CMOS reset.

On the flipside, every MSI Intel motherboard I have had (MSI MPG Z390I GAMING EDGE AC and MSI Z490-A PRO) has near perfect recovery from bad RAM timings.

It's just an AMD thing. You learn to deal with it.
 

Alan J T

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Sep 11, 2020
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2,156
Memory Failure Retry seems to be enabled (it is also enabled after doing a CMOS reset, so I guess it's the default). I also found that the behaviour is the same for both boards for any frequency below 3200MHz, meaning that the Tomahawk properly resets the BIOS for those frequencies. Only when I use 3200MHz , the Tomahawk fails to reset. Weirdly enough with the same settings @3200MHz, the B450 Gaming Carbon Pro resets after a few attempts to boot. Maybe worth mentioning that the Tomahawk does not even attempt to reboot but just remains powered on doing nothing when RAM frequency is set to 3200Mhz.
Have noticed the same and BIOS version makes no Difference so no longer play with ram settings. My PC is in a out of the way spot so I have used Bios Flashback to reset The Bios
 

ollie_b_200159b02e9

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Nov 19, 2020
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I just received my new x570 Tomahawk and tried to set my RAM timings and frequency (first using XMP and then manually). I noticed that the board does not restore to the default BIOS settings automatically for invalid RAM settings and I have to do a CMOS reset by removing the battery manually for each failed attempt. This is particularly tedious since the CMOS battery is hidden by my graphics card.

I also own a B450 Gaming Carbon Pro which does in fact default to the factory settings after a few failed boot attempts. I would've expected a higher end board to have this convenience feature as well.

Does the x570 Tomahawk really not have this feature or am I missing some setting here?
I noticed the same behavior. One thing you can do to make like easier is just to short the pins below the GPU for the pins marked JBAT1 as this is actually the way you're supposed to clear the CMOS settings.

Rather than using a jumper I just use a screwdriver as all you're essentially trying to do is bridge the gap between the 2 pins for a few seconds, plus unlike old motherboards you don't seem to get jumpers included nowadays.

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