Ram CAS not changing

[Niami]

Before I say anything yes I have read the older post about cas latency not changing. Anyway I have set my ram's cas latency from 16 to 15 and changed the values that are usually 2nd and 3rd on ram timing specs (sorry cant remember what they're called) from 18 to 17. I have rebooted about 15 times after that has been set in the bios, not in software, and the only thing that changes are the other two values and not cas latency. Help?

[nick name]

Is this on Ryzen?  If so you can't always use odd timings with Geardown mode enabled.  It will change it to an even timing.  

[Niami]

2 minutes ago, nick name said:

Is this on Ryzen?  If so you can't always use odd timings with Geardown mode enabled.  It will change it to an even timing.  

yes it is on ryzen. i will try to get set it to 14

[Niami]

8 minutes ago, nick name said:

Is this on Ryzen?  If so you can't always use odd timings with Geardown mode enabled.  It will change it to an even timing.  

so i tried that and it boot cycled 4 times wthout getting to post screen then gave me a "booting in safe mode" american legends screen. So i set it back to 16 normally which is the normal cas. I dont think my ram likes oc. Anyway thanks for the help!

[nick name]

Yeah, that's why I said "can't always use".  If it were stable enough it would have left it be, but if it can't POST with it then it changes it.  What will likely help is a little more DRAM voltage to get the timings you want running.  

 

Have you tried the Ryzen DRAM Calculator?

https://www.overclock.net/forum/13-amd-general/1640919-ryzen-dram-calculator-1-1-0-beta-2-overclocking-dram-am4.html

[Niami]

4 minutes ago, nick name said:

Yeah, that's why I said "can't always use".  If it were stable enough it would have left it be, but if it can't POST with it then it changes it.  What will like help is a little more DRAM voltage to get the timings you want running.  

 

Have you tried the Ryzen DRAM Calculator?

https://www.overclock.net/forum/13-amd-general/1640919-ryzen-dram-calculator-1-1-0-beta-2-overclocking-dram-am4.html

Thanks for the help. I looked at the calculator for a bit and feel that I've gone far enough with ram oc :D. I'll try to go further when I feel I know a bit more about ram oc

[nick name]

6 minutes ago, Niami said:

Thanks for the help. I looked at the calculator for a bit and feel that I've gone far enough with ram oc :D. I'll try to go further when I feel I know a bit more about ram oc

What have you done so far?