Corsair Vengeance LPX 64GB 4x16GB 4000Mhz CMK32GX4M2F4000C19

I am trying to get my memory speed above 3.6Ghz. In order to achieve 3.6 I had to raise the DRAM voltage to 1.40. I tried 1.45 to try and get to 3.7Ghz but the post failed. My RAM is supposed to be able to hit 4Ghz. Do I have to give it more juice? If so, what is the maximum I can give it without frying my RAM?

 

 

SPECS

Corsair Graphite Series™ 780T Full-Tower PC Case.

GIGABYTE Z370 AORUS Gaming 7 Motherboard.

Corsair RMi Series RM1000i — 1000 Watt 80 PLUS Gold Certified Fully Modular PSU.

Intel Core i7-8700K CPU.

Corsair Vengeance LPX 64GB 4x16GB 4000Mhz CMK32GX4M2F4000C19 RAM.

EVGA GeForce GTX 1080 Ti FTW3 GAMING, 11G-P4-6696-KR, 11GB GDDR5X, iCX Technology - 9 Thermal Sensors & RGB LED G/P/M.

Corsair Hydro Series H115i v2 Extreme Performance Liquid CPU Cooler.

Corsair Lighting Nodes and LED strips.

2-Samsung 960 PRO M.2 500GB NVMe PCI-Express 3.0 x4 Internal Solid State Drive.

1-Seagate 2TB hard drive SATA6.

Vdimm is probably not the issue since the kit is rated for DDR4-4000 at 1.35V. You might have to manually adjust VCCSA/VCCIO and/or some of the tertiary timings if your board fails to properly train them during POST.

I overclocked my CPU to 5Ghz. Memory is at 3700. VCCSA/VCCIO is at 1.35v. DRAM is at 1.35v. VCORE is at 1.30v. System Agent is at 4500. What does it take to even hit 3800?

 

I'm not complaining about 3700. I'm sure it's probably just as good as 4000. But I paid for 4000 and I sure would like to get to it.

 

Any other settings I can change without frying things. :sigh!:

Those VCCSA/IO voltages are rather high for DDR4-3700. These are probably configured @ AUTO? Values too high/too low both can hurt stability, so i would adjust them manually instead to what your CPU IMC actually requires for that memory frequency (my 7700K needs sub 1.2V VCCSA for that and even less VCCIO).

 

As for hitting DDR4-4000, test both kits individually first in the recommended slots. It might be a case of the MB not being able to handle 4x16GB at that high of a frequency, esp if Gigabyte didn't apply a decent T-topology for the memory slots.