Getting memory to 3600MHz

[Zalosath]

Hi there,

 

I have Corsair Vengeance Pro RGB Memory, I originally had a 16GB kit (2x8GB) and I was pretty easily able to get to 3600MHz at CAS 18. 

 

I bought an extra 16GB (4x8GB now) and it can no longer run at 3600MHz (which I totally understand). I managed to get it up to 3200MHz. I tried playing with the voltages (don't even ask which voltages because I have absolutely no idea I was just following a series of forum posts online) but I still couldn't get it to boot past 3200MHz.

 

The 3200MHz I'm running is very stable, not had a crash yet.

 

Is there any way I can get to 3600MHz? 

 

If you think I can get better performance by reducing CAS latency instead then don't hesitate to suggest that too. 

 

Thanks in advance.

[Shimejii]

Your IMC on the CPU or the new ram sticks are not able to run. Id suggest testing the new ram sticks alone to see if they can even boot at 3600 mhz to begin with since your old one could.

[Zalosath]

3 minutes ago, Shimejii said:

Your IMC on the CPU or the new ram sticks are not able to run. Id suggest testing the new ram sticks alone to see if they can even boot at 3600 mhz to begin with since your old one could.

Hm okay I'll give it a try. Thanks.

[Cyracus]

for voltages soc</=1.2v   vddp </=1.1v   vddg </=1.1(5?)v are 24/7 max iirc
vdimm voltage probably best left to whatever xmp sets for now as some chips degrade with higher voltages

3600 cl18 is already pretty loose, I think it'd likely be a better use of your time to tighten timings at 3200 if you haven't already. Maybe try some frequencies between 3200 and 3600

[Zalosath]

On 12/21/2020 at 10:16 PM, Cyracus said:

-snip-

 

On 12/21/2020 at 9:23 PM, Shimejii said:

-snip-

Upon further investigation, the RAM sticks are actually not that same. A single character in the product number is different. 

 

But I've managed to get to 3400MHz, which is honestly fine. The problem was that Ryzen Master was setting my CAS latency to 15, booting to 3600MHz CAS 15. I changed this in Ryzen Master and also changed the value of CAS in the BIOS and it boots fine. It's worth noting that I did change the SOC voltage to 1.25V but I could not figure out how to change vddp or vddg so I just left them as they are. (Auto)

[Shimejii]

11 hours ago, Zalosath said:

 

Upon further investigation, the RAM sticks are actually not that same. A single character in the product number is different. 

 

But I've managed to get to 3400MHz, which is honestly fine. The problem was that Ryzen Master was setting my CAS latency to 15, booting to 3600MHz CAS 15. I changed this in Ryzen Master and also changed the value of CAS in the BIOS and it boots fine. It's worth noting that I did change the SOC voltage to 1.25V but I could not figure out how to change vddp or vddg so I just left them as they are. (Auto)

gotta love when they have a 20 character product number and then its like GTZX versus GTZ