Minimum or recommended voltages for VCCSA and VCCIO2 (Aux Mem) for 4 Hynix-D DDR4 RAM modules, in GEAR 1

[Magnarks]

Greetings, I have a concern, I currently have 4 RAM modules, which I have running at 3600 Mhz, GEAR 1, 16-20-20-40, CR1, with an Intel Core i7 11700K, my motherboard (Aorus Z590 Master) was automatically VCCSA at around 1,320v and when It needed more, I think it went up to 1,332v, but I noticed errors in games or applications in the event viewer, like "RADAR_PRE_LEAK_64" although the applications did not hang or gave errors, otherwise the PC works fine, So I think maybe the voltage is insufficient? I raised the VCCSA to 1.35v and the VCCIO2 to 1.4v (I understand that this is usually 50 mV lower, but in some videos I have seen it is 50 mV higher, I am not sure which is correct) in HwINFO, the VCCSA notifies me actually at 1.368v and goes up to 1.38v under load, I haven't been able to test yet if with this the errors and warnings disappear, but I want to know if it is a safe voltage and if I can really find a slightly lower voltage that is still stable, in forums I have seen people who handle more aggressive memory values with lower voltage, but I don't know if it is because I have 4 RAM modules and they only have 2?

In the memories I assigned 1.4v, I know that the Hynix-D or DJR memories can work up to 1.6v, in fact the XMP profile is 1.5v, but since there are 4 modules, I did not want to put more voltage in them, I have read that Higher temperature makes it unstable and since there are 4 modules it could heat up. Will those 1.4v be to blame for the errors and not so much the VCCSA and VCCIO2?. Because it seemed stable and I don't have blue screens or things like that.

My Modules

Sorry if you don't understand it very well, I don't speak English, thank you.

PD: I just checked and I'm still getting those messages. Maybe it's the command rate? I also found that when more modules are handled, a CR of 2 is more stable.

 

[Tatty_Two]

I am currently running an 11600k off a Z490 board with 4 single rank B-die modules at 3600mhz Gear 1 (I can't go higher speeds with my board in Gear 1) with CL14 timings and I have manually set my voltages at 1.22v for both (memory voltage is @ 1.44v), obviously there are variables such as Motherboard and CPU that make comparisons difficult but on my board anything above 1.3v can cause instability, auto settings in my experience tend to be a lot more aggressive than what is required, especial at your memory timings, at a guess you could set yours both at 1.25v and you will be fine, working downwards if you have stability.

 

[Magnarks]

I am currently running an 11600k off a Z490 board with 4 single rank B-die modules at 3600mhz Gear 1 (I can't go higher speeds with my board in Gear 1) with CL14 timings and I have manually set my voltages at 1.22v for both (memory voltage is @ 1.44v), obviously there are variables such as Motherboard and CPU that make comparisons difficult but on my board anything above 1.3v can cause instability, auto settings in my experience tend to be a lot more aggressive than what is required, especial at your memory timings, at a guess you could set yours both at 1.25v and you will be fine, working downwards if you have stability.

Thanks for the comment, I will try to lower the voltage as you say in both values, and raise the ram to 1.45v, if this can help me.

If not, I believe that it is some memory parameter such as the Command Rate or another latency value that is not stable.

 

[Tatty_Two]

Thanks for the comment, I will try to lower the voltage as you say in both values, and raise the ram to 1.45v, if this can help me.

If not, I believe that it is some memory parameter such as the Command Rate or another latency value that is not stable.

Also with regard to Gear 1, CPU's can differ a lot in stability in relation to speeds as not all memory controllers are equal, for your timings/speed (assuming you are running XMP) you really should not need more than 1.4v, to eliminate a possible issue with gear 1, try running your memory at CR2 with stock memory and voltage settings, if they run fine maybe you would be as well to try gear 2 but at CR1 ........... I should have mentioned I am running CR2 whilst in gear 1.

 

[ir_cow]

Change memory to command rate 2 (T2) if your having stability issues. That should help.

 

[Magnarks]

Also with regard to Gear 1, CPU's can differ a lot in stability in relation to speeds as not all memory controllers are equal, for your timings/speed (assuming you are running XMP) you really should not need more than 1.4v, to eliminate a possible issue with gear 1, try running your memory at CR2 with stock memory and voltage settings, if they run fine maybe you would be as well to try gear 2 but at CR1 ........... I should have mentioned I am running CR2 whilst in gear 1.

When I set the default memory, either through optimized values in the BIOS or cleaning the CMOS, by default the memories are at 2666, Gear 1, I think it is also CR2, I don't remember

I just verified it and yes, by default this is how the board adjusts my memory

Change memory to command rate 2 (T2) if your having stability issues. That should help.

Thanks, I'll try it

Well, after a few tries, I started with CR2, I'm going to try the automatic equal voltage values, to rule out CR.

I also notice that when the PC starts after finishing training, sometimes everything works without a problem, but the next day when I turn it on and it does a memory retraining again, when I do tests I see the errors, I don't know if it's normal?

 

[ir_cow]

Dual-rank 3600 Gear 1 on 11th Gen is asking a lot from the CPU. Probably need to bump SA and VCCIO2 up a bit. However, too high and you have a dead controller.

I would just drop memory down to 3400 and call it good.

 

[ThrashZone]

Change memory to command rate 2 (T2) if your having stability issues. That should help.

Hi,
Yeah 4 sticks rule hehe

 

[Magnarks]

Greetings.

I've been back updating my memory settings, after trying the CR in 2, I kept getting problems, I tried the tRFC and neither, in the end reading an OC guide on GitHub DDR4 Guide, I read that the tCWL is affected by the tCL, yes It has an even number tCL, on some boards it is recommended to set the tCWL equal to this or two points below, if it is odd, you can try just one point less than the tCL, I had the tCWL at 15 and my tCL is 16 , so I uploaded the tCWL anyway and apparently this helped, I didn't try it in 14, but for now it works perfectly for me in 16, I prefer to leave it like this

I am also testing with memory voltage of 1.38v, to ensure that the memories do not get too hot, my modules are Hynix-D (DJR) which, as I have seen, are very sensitive to temperature, and having 4 modules stuck together, I wanted Try with a low voltage and since I also lowered the frequency to 3466 MHz (3400, for some reason it didn't do POST, Additionally, with 3466 MHZ I had stability problems, so this in itself did not help the stability, but rather I preferred to lower it for the same temperatures and with respect to 3600 in performance it is almost the same) lower the voltage, I saw many modules that work up to 4000 MHz with only 1.35v, of course I can't compare them for that reason I try 1.38v