Corsair Vengeance LPX, DDR4, 16GB,3000MHz, CL16 not stable

caart · Jan 22, 2019

Hello,
As in the topic: my Corsairs 2x8GB are not stable at 3000mhz. I have set frequency to 3000 from default 2133 in BIOS and 1.35V as well. PC was working but sometimes I was receiving crashes in game (Overwatch) or strange errors in Opera like "Site stopped working" - need to refresh and then went back to normal for a while. After 2-3 days I've started receiving BSODs randomly - most often with information about MEMORY_MANAGEMENT.

So after these issues I've launched memtest and received thousands of errors (still at 3000mhz). I've set up freq. to base 2133mhz and then launch memtest again - no errors. I have combined some other things like: enabling XMP, setting voltage to auto and still getting errors. Don't know if the RAM is broken or I am putting wrong parametres. Thank you in advance for any help/advices.

My spec:
Win 10 Pro 64-bit
MOBO: MSI MPG Z390 GAMING PLUS
CPU: Intel Core i5-9600K, Hexa Core, 3.7GHz, 9MB,14mn
GPU: MSI GeForce RTX 2070 ARMOR 8G 8GB GDDR6
DISK: Samsung 860 EVO 500GB SATA3
RAM: Corsair Vengeance LPX, DDR4, 16GB,3000MHz, CL16 (slot A2/B2)
Power supply: Supremo FM2 Gold 650W

PC is not even 2 weeks old.

Roland Of Gilead · Jan 22, 2019

Try setting the DIMMS at 2933 (this is the actual mem strap). Use the same timings as 3000mhz, but drop it to 2933, see if it works.

caart · Jan 22, 2019

Roland Of Gilead :

I have tried your solution but it didn't work. I've also tried with XMP and voltage 1.35 or Auto and still receiving hundreds errors after 1 minute of memtest.

Now, I am on 2666Mhz and Auto voltage (1.36V) and no errors (I know that memtest should lasts much longer but I assume If I didn't receive errors in first 10minutes then it should be fine).

The rest of parameteres which I didn't touch were (and still are):
Command Rate: 2
tCL: 16
tRCD: 20
tRP: 20
tRAS: 38
tRFC: 514

Roland Of Gilead · Jan 22, 2019

Continue with moving up in straps of 133mhz and keep going untill you hit errors. I'd run memtest for 4 passes seeing as you're having difficulty. To be sure.

I actually should have asked this in my first post. Did you update your bios? Is it the most recent one? If not that do that before anything else. It could very well be that the bios is out of date.

Roland Of Gilead · Jan 22, 2019

Can you link the model number of the ram? Did you check the ram is on the QVL for the mobo? You can check here: https://www.msi.com/Motherboard/support/MPG-Z390-GAMING-PLUS#support-mem-3

If it's not on the list, then a bios update may fix all the issues

caart · Jan 22, 2019

Roland Of Gilead :

BIOS is up to date. Downloaded it right after OS installation. Ok will check all 4 passes at 2666mhz.
However, next (and last) step is 2799 becasue on the higher it didn't work

I am worried why. This MOBO should handle 4400Mhz according to specification provided by MSI:
4400(OC)/ 4300(OC)/ 4266(OC)/ 4200(OC)/ 4133(OC)/ 4000(OC)/ 3866(OC)/ 3733(OC)/ 3600(OC)/ 3466(OC)/ 3400(OC)/ 3333(OC)/ 3300(OC)/ 3200(OC)/ 3000(OC) / 2800(OC)/ 2666/ 2400/ 2133 MHz

caart · Jan 22, 2019

Roland Of Gilead :

Corsair Vengeance LPX, DDR4, 16GB,3000MHz, CL16 (CMK16GX4M2D3000C16). I see that this model is not on the list... :/ But BIOS is fresh as I wrote in previous post :/

Roland Of Gilead · Jan 22, 2019

caart :

Them not being on the list, just means they haven't been tested with the mobo. This could account for the issues. In this case, all you can do is test and see how you go.

Beyond 2666 you really want to use only the 1.35v for further speeds.

Try this: Rather than set timings manually, leave all on auto. Set the voltage to 1.35, and only change the speed of the DIMMS. see how far you get, but remember to run memtest to test each speed setting. The purpose of leaving the timings on auto, is to let the system decide them, and leave them pretty loose. This might let you get to 3000mhz. Then you can go backwards from there, and adjust timings (first noting the settings on auto - by looking at the spd tab in CPUz) and then manually setting those timings in the bios, by dropping back a level.

So lets say your timings at auto, and with 1.35v is 17-19-19-35-65 or something and they function at the desired speed. Then change the timings to 16-18-28-34-65. This is time consuming, but by doing so, and getting close to rated timings you will increase the bandwidth of the DIMMS, and the cas latency which can give further improvements.

I hope i've explained myself well. The overall point being, with those DIMMS, you're gonna have to tinker around with these settings to get best results. Just remember to test all the way so you know whatever setting you change works. And only change one setting at a time.

If you have any questions, drop me a PM, and I can try illustrate it better.

Roland Of Gilead · Jan 22, 2019

caart :

Them not being on the list, just means they haven't been tested with the mobo. This could account for the issues. In this case, all you can do is test and see how you go.

Beyond 2666 you really want to use only the 1.35v for further speeds.

Try this: Rather than set timings manually, leave all on auto. Set the voltage to 1.35, and only change the speed of the DIMMS. see how far you get, but remember to run memtest to test each speed setting. The purpose of leaving the timings on auto, is to let the system decide them, and leave them pretty loose. This might let you get to 3000mhz. Then you can go backwards from there, and adjust timings (first noting the settings on auto - by looking at the spd tab in CPUz) and then manually setting those timings in the bios, by dropping back a level.

So lets say your timings at auto, and with 1.35v is 17-19-19-35-65 or something and they function at the desired speed. Then change the timings to 16-18-28-34-65. This is time consuming, but by doing so, and getting close to rated timings you will increase the bandwidth of the DIMMS, and the cas latency which can give further improvements.

I hope i've explained myself well. The overall point being, with those DIMMS, you're gonna have to tinker around with these settings to get best results. Just remember to test all the way so you know whatever setting you change works. And only change one setting at a time.

If you have any questions, drop me a PM, and I can try illustrate it better.

caart · Jan 23, 2019

Roland Of Gilead :

caart :

Them not being on the list, just means they haven't been tested with the mobo. This could account for the issues. In this case, all you can do is test and see how you go.

Beyond 2666 you really want to use only the 1.35v for further speeds.

Try this: Rather than set timings manually, leave all on auto. Set the voltage to 1.35, and only change the speed of the DIMMS. see how far you get, but remember to run memtest to test each speed setting. The purpose of leaving the timings on auto, is to let the system decide them, and leave them pretty loose. This might let you get to 3000mhz. Then you can go backwards from there, and adjust timings (first noting the settings on auto - by looking at the spd tab in CPUz) and then manually setting those timings in the bios, by dropping back a level.

So lets say your timings at auto, and with 1.35v is 17-19-19-35-65 or something and they function at the desired speed. Then change the timings to 16-18-28-34-65. This is time consuming, but by doing so, and getting close to rated timings you will increase the bandwidth of the DIMMS, and the cas latency which can give further improvements.

I hope i've explained myself well. The overall point being, with those DIMMS, you're gonna have to tinker around with these settings to get best results. Just remember to test all the way so you know whatever setting you change works. And only change one setting at a time.

If you have any questions, drop me a PM, and I can try illustrate it better.

Thank you very much for help. I will try to contact shop and exchange them. If they do not agree I will try follow your instructions or just use it on 2666Mhz and hope that MSI will include this RAM model in next update...

Roland Of Gilead · Jan 23, 2019

caart :

Roland Of Gilead :

caart :

Them not being on the list, just means they haven't been tested with the mobo. This could account for the issues. In this case, all you can do is test and see how you go.

Beyond 2666 you really want to use only the 1.35v for further speeds.

Try this: Rather than set timings manually, leave all on auto. Set the voltage to 1.35, and only change the speed of the DIMMS. see how far you get, but remember to run memtest to test each speed setting. The purpose of leaving the timings on auto, is to let the system decide them, and leave them pretty loose. This might let you get to 3000mhz. Then you can go backwards from there, and adjust timings (first noting the settings on auto - by looking at the spd tab in CPUz) and then manually setting those timings in the bios, by dropping back a level.

So lets say your timings at auto, and with 1.35v is 17-19-19-35-65 or something and they function at the desired speed. Then change the timings to 16-18-28-34-65. This is time consuming, but by doing so, and getting close to rated timings you will increase the bandwidth of the DIMMS, and the cas latency which can give further improvements.

I hope i've explained myself well. The overall point being, with those DIMMS, you're gonna have to tinker around with these settings to get best results. Just remember to test all the way so you know whatever setting you change works. And only change one setting at a time.

If you have any questions, drop me a PM, and I can try illustrate it better.

Thank you very much for help. I will try to contact shop and exchange them. If they do not agree I will try follow your instructions or just use it on 2666Mhz and hope that MSI will include this RAM model in next update...

No probs. You're welcome. Let us know how you get on!

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