Ram OC

[Lukakopa7]

I have 2x8gb 3000mhz ram kit. I overclocked it to 3600mhz, 1.35v, stock timings and it is still stabile (tested with OCCT, MemTest64, MemTest86) . Shoud i try to OC more and encrise voltage? Will it improve my performance?

[Hairless Monkey Boy]

Nice job!

 

Can you list full specs? And what timings are you using?

[Lukakopa7]

1 minute ago, HairlessMonkeyBoy said:

Nice job!

 

Can you list full specs? And what timings are you using?

Gigabyte B450 gaming x motherboard 

Patriot Viper4 2x8gb 3000mhz 16-16-16-36

Ryzen3 3300x

Arctic freezer 34 esports (cpu cooler) 

Gtx 1650 super

650w psu

3 case fans

 

[Hairless Monkey Boy]

8 minutes ago, Lukakopa7 said:

Ryzen3 3300x

Great! 3600Mhz is the optimal speed for this CPU. Your next steps would be to try lowering the primary timings starting with the first number then the second, then the third. So like this:

 

15-16-16-36 -> 14-16-16-36.

 

If 15 work but not 14 then you would try 15-15-16-36 and so on.

 

If a timing seems like it's almost stable, you can try increasing the voltage. It's safe to go up to 1.45V for the RAM for 24/7, but if 1.35V works then stick with that. i wouldn't go above 1.5V.

 

At a minimum, the 4th number should be at least the sum of the first two numbers plus 2. So for 16-16-16-XX the XX whould be at least 16+16+2=34.

 

After you have your Primary Timings set you can be done, or you can try messing with your secondary and tertiary timings. There can be some pretty big gains with tightening these timings, especially the tertiaries, but it can take a lot of trial and error to get them tight and stable.

 

 

[porina]

Nice result. Given the CPU I'd say that was already running at the sweet spot. You can always try for more just to see how far you get but I'd be happy at 3600 if it is really stable. How much testing did you do on it? Some ram instability can be really infrequent.

[Lukakopa7]

3 minutes ago, HairlessMonkeyBoy said:

Great! 3600Mhz is the optimal speed for this CPU. Your next steps would be to try lowering the primary timings starting with the first number then the second, then the third. So like this:

 

15-16-16-36 -> 14-16-16-36.

 

If 15 work but not 14 then you would try 15-15-16-36 and so on.

 

If a timing seems like it's almost stable, you can try increasing the voltage. It's safe to go up to 1.45V for the RAM for 24/7, but if 1.35V works then stick with that. i wouldn't go above 1.5V.

 

At a minimum, the 4th number should be at least the sum of the first two numbers plus 2. So for 16-16-16-XX the XX whould be at least 16+16+2=34.

 

After you have your Primary Timings set you can be done, or you can try messing with your secondary and tertiary timings. There can be some pretty big gains with tightening these timings, especially the tertiaries, but it can take a lot of trial and error to get them tight and stable.

 

 

Ok thank you for help

[Lukakopa7]

9 minutes ago, HairlessMonkeyBoy said:

Great! 3600Mhz is the optimal speed for this CPU. Your next steps would be to try lowering the primary timings starting with the first number then the second, then the third. So like this:

 

15-16-16-36 -> 14-16-16-36.

 

If 15 work but not 14 then you would try 15-15-16-36 and so on.

 

If a timing seems like it's almost stable, you can try increasing the voltage. It's safe to go up to 1.45V for the RAM for 24/7, but if 1.35V works then stick with that. i wouldn't go above 1.5V.

 

At a minimum, the 4th number should be at least the sum of the first two numbers plus 2. So for 16-16-16-XX the XX whould be at least 16+16+2=34.

 

After you have your Primary Timings set you can be done, or you can try messing with your secondary and tertiary timings. There can be some pretty big gains with tightening these timings, especially the tertiaries, but it can take a lot of trial and error to get them tight and stable.

 

 

I turn firs timing to 15 and my pc dont turn on. What shoud i do? 

[Hairless Monkey Boy]

3 minutes ago, Lukakopa7 said:

I turn firs timing to 15 and my pc dont turn on. What shoud i do? 

Depends on the features of the motherboard. Sometimes the board will boot into a "safe mode" after a failed POST and you can try to correct any errors in your settings.

 

For lower end boards you might have to clear CMOS and re enter all of you settings, or load up a profile that you have saved.

 

Hold the power button to shut down the system and try to boot again.

[Lukakopa7]

3 minutes ago, HairlessMonkeyBoy said:

Depends on the features of the motherboard. Sometimes the board will boot into a "safe mode" after a failed post and you can try to correct any errors in your settings.

 

For lower end boards you might have to clear CMOS and re enter all of you settings.

 

Hold the power button to shut down the system and try to boot again.

My pc is working. Shoud i try again? 

 

[SkilledRebuilds]

Keep note that your GPU temps, affect RAM temps under load.

So adding RAM volts isn't always a good idea (towards the end results when you want to add voltage and keep going)
While stable in stresstesting without a GPU in play, it can be unstable in games due to GPU heat being circulated close to RAM modules.

[Hairless Monkey Boy]

10 minutes ago, Lukakopa7 said:

My pc is working. Shoud i try again?

You can try increasing voltage if you are comfortable with that. But if the PC failed to POST at CL15 then more voltage isn't likely to help. Since you can't lower the first number (CL), you likely can't lower the 2nd(TRCD) or third(TRP) either, but you can go ahead and try anyway. If nothing else, lowering the fourth number (TRAS) to 34 might improve performance slightly, but it could also hurt performance, so you should run a benchmark like Aida64, Geek Bench or Passmark Performance Test to see if what you are changing is helping or hurting.

 

After that you could start tuning your secondary timings. You should at least give Trefi and Trfc a look since these have the biggest impact on performance of the secondary timings.

[Lukakopa7]

18 hours ago, HairlessMonkeyBoy said:

You can try increasing voltage if you are comfortable with that. But if the PC failed to POST at CL15 then more voltage isn't likely to help. Since you can't lower the first number (CL), you likely can't lower the 2nd(TRCD) or third(TRP) either, but you can go ahead and try anyway. If nothing else, lowering the fourth number (TRAS) to 34 might improve performance slightly, but it could also hurt performance, so you should run a benchmark like Aida64, Geek Bench or Passmark Performance Test to see if what you are changing is helping or hurting.

 

After that you could start tuning your secondary timings. You should at least give Trefi and Trfc a look since these have the biggest impact on performance of the secondary timings.

With 1.47v i can do 15-15-16-34 but RAM runs much hotter. If i lower voltage for just a little bit it becomes unstabile. Is this voltage ok for 24/7?

[Hairless Monkey Boy]

3 minutes ago, Lukakopa7 said:

With 1.47v i can do 15-15-16-34 but RAM runs much hotter. If i lower voltage for just a little bit it becomes unstabile. Is this voltage ok for 24/7?

I'm inclined to say that should be fine. Just one thing, though. Sometimes the voltage you ask for and the voltage you get are not the same. For instance, my Asus Z97-A board for some reason always seemed to add 0.4V to my DRAM ask voltage. If you download and install HWinfo64 it will tell you your get voltage.

 

It seems like you might be running just on the edge of stability. If you want to be more confident that your system is truly stable you should run the HCI Design MemTest. Run enough instances to cover ~75% of your RAM and run them until you get 300-400% coverage. So in your case you could run 6 instances of 2GB each.