ddr4 command rate question

packersfan036 · Sep 15, 2018

hi everyone, I have a quick question. should I set my ddr4 3000mhz 32gb of ram to command rate 1 or 2? right now xmp has it at 1t but its only stable to 2666mhz. I cant get stable at 2933 mhz. so should I set xmp back to 2933mhz and change the command rate to 2t? my cpu is a ryzen 5 1600 motherboard is a asrock fatal1ty gaming k4 ab350 board. ram is xpg spectrix d40 3000mhz ram. my cpu is overclocked to 3950mhz 1.38 volts. stable.

TechyInAZ · Sep 15, 2018

If you have Gear Down mode enabled, then it doesn't matter what the command rate is. Gear Down (in simple words) takes over the command rate and does it's own thing, making the command rate setting irrelevant when gear down mode is enabled.

Gear Down Mode is very similar to 2T mode when it comes to performance. So I doubt it'll fix all your problems, but disabling it and switching to 2T mode is worth a shot.

Is your CPU fully stable, like FULLY stable?? (Meaning a 8-12 hour stress test of prime95 or Realbench or AIDA64) If not, then that's your problem.

Also, are you running 2 sticks or 4 sticks of RAM? 4 sticks is a LOT harder for Ryzen to handle when it comes to higher speeds.

Try increasing your SOC voltage to around 1.8-1.9v and see if that helps aswell.

packersfan036 · Sep 15, 2018

TechyInAZ :

If you have Gear Down mode enabled, then it doesn't matter what the command rate is. Gear Down (in simple words) takes over the command rate and does it's own thing, making the command rate setting irrelevant when gear down mode is enabled.

Gear Down Mode is very similar to 2T mode when it comes to performance. So I doubt it'll fix all your problems, but disabling it and switching to 2T mode is worth a shot.

Is your CPU fully stable, like FULLY stable?? (Meaning a 8-12 hour stress test of prime95 or Realbench or AIDA64) If not, then that's your problem.

Also, are you running 2 sticks or 4 sticks of RAM? 4 sticks is a LOT harder for Ryzen to handle when it comes to higher speeds.

Try increasing your SOC voltage to around 1.8-1.9v and see if that helps aswell.

im using 4 8gb sticks of ram, cpu is stable, and where is gear down mode located?

TechyInAZ · Sep 15, 2018

memory settings.

packersfan036 · Sep 15, 2018

TechyInAZ :

is it actually called gear down mode? and your sure its in my bios asrock fatal1ty ab350 k4 gaming board.

packersfan036 · Sep 15, 2018

what is soc voltage exactly? is it for ram? I think it is.

TechyInAZ · Sep 15, 2018

ah it's B450, hmmmmm I'm not sure to be honest. In my bios it says Gear Down Mode but I've got a X370 Hero VI.

SOC voltage is for the integrated memory controller on the CPU, there's a chance the memory controller cannot handle the speed the memory is running at, so increasing it might help.

packersfan036 · Sep 15, 2018

TechyInAZ :

ya, I don't think my bios has all those options.

kerberos_20 · Sep 15, 2018

your issue is having 4 sticks of ram with ryzen
i have ryzen too, mine ram can go 3466 in a2/b2 slots, while 2800+ is unstable as **** in a1/b1 slots
and since u cant use different odt/rtt/cadbus for each channel, theres nothing u can do about it

packersfan036 · Sep 15, 2018

kerberos_20 :

ok, ill just hang with 2666 MHz which is good enough.

packersfan036 · Sep 15, 2018

kerberos_20 :

thanks

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