Yes, there are various RAM voltages depending on the type and manufacturer.
Yes, there are various RAM voltages depending on the type and manufacturer.
I’m receiving a free 8GB RAM module rated at 1.35V, but I’m currently using it at 1.2V. I looked up recent discussions and found around 25 responses to my query. Should I adjust the voltage—lower it to match 1.35V or raise it to fit 1.2V—or keep them as they are? Could combining both affect the motherboard if used together? Please advise in advance.
P.S. Avoid the “just buy another kit don’t risk” type of answers; I need a direct response to my question.
What kind of RAM do you have, and what are you using it for? For instance, during the DDR4 period, typical RAM runs at 1.2V, while premium XMP kits often exceed 1.35V. If you skip enabling XMP settings, the higher-speed RAM will likely operate at a lower frequency, and vice versa.
The best choice is to use both at 1.2, but combining very different RAM types may lead to many problems. It could fail to boot, cause crashes, and you likely won’t be able to use XMP.
It’s not risky at all. The only possible issue is instability when both sticks are connected, and the best way to confirm that is by testing. I’m guessing they use DDR4 technology, given the naming. 1.2V follows JEDEC standards for DDR4, so placing both in the system will keep them running at that voltage, matching the slower component (likely 2133MT/s CL15). If you aim for the faster speed, you can attempt that too. According to JEDEC rules, RAM should handle up to 1.35V without lasting damage, making overvolting safe.
You have two DDR4 RAM sticks, one at 2666MHz and another at 3200MHz. The motherboard supports Z370 with a 1.35V slot.
Adding another component risks memory imbalance, mixing dual channels with single. Keep the new module in unless you truly require extra space. If you install it: choose a safe path by running both versions at 2133 or slightly faster at 1.2v based on their readings. Disable XMP and let the system adjust automatically. Test at 1.2v: configure 1.2v, off XMP, manually set speed to 2666, and check stability. The 3200 model may struggle at this speed and voltage—consider testing at 1.35v instead. Set 1.35v, off XMP, manual speed 2666, verify stability. Extra voltage on older modules won’t drastically affect performance beyond higher power use. Overclocking mode at 1.35v: enable XMP if possible, adjust speed to 3200 if needed, and monitor stability. This will require you to push the existing 2666 units beyond their limits.