Combining Ram Voltage levels can affect performance.
Combining Ram Voltage levels can affect performance.
I have two 16GB DDR4 modules at 4000MHz, but I need more than that for better performance. The alternatives I found are around 1.4V and 1.35V, which is a significant drop in voltage. Increasing the voltage from 1.35 to 1.4 for long periods could be risky. Many users report stability issues or even damage if not handled carefully. It's best to stick with the same voltage unless you're certain about the compatibility. For heat management, consider using quality heat spreaders or pads to keep temperatures down. The Patriot model looks decent but the red color isn't appealing—maybe look for other colors or different brands.
If one component runs well at 1.35 at 4000MHz, I’d match its performance. As long as it stays stable at that frequency, just keep it there. From what I understand, the slight increase shouldn’t cause major issues.
You have two sticks at 4000 with 1.35V. Comparing upgrading to GSKill 1.4V RAM versus increasing your existing 1.35V stick to 1.4V—would it be better to adjust the voltage to 1.35 again or move to the higher voltage option?
Generally, this subject is quite intricate. It isn’t inherently problematic, but certain considerations are important. The primary concern about mixing voltages arises because you often end up with two distinct memory ICs on the same kit, which may not be compatible. Each IC has its own voltage tolerance range. While most operate well at 1.4V, some high-end dies like the Micron 4Gb Rev A and Samsung 8Gb C models can handle levels below 1.35V. Without knowing what’s on your components, it’s risky, especially without a premium kit. Attempting to combine memory with achieving 4000MT/s is challenging, particularly for the memory controller. In practice, it’s usually wiser to upgrade to a more capable kit—such as a 2x32GB version if you need 64GB—so you avoid compatibility issues and maintain performance.
It may function, I tested various voltages for DDR3 without issues, but DDR4 could pose problems. In short, Ronathan##'s suggestion seems most reliable.
thx, would you prefer all sticks to run at 1.35v? originally I considered the Mushkin DIMM 32 GB DDR4-4000 kit (MRC4U400JNNM16GX2 or MRD4U400JNNM16GX2), but it's currently out of stock. this kit also runs at 1.35v at 4000, which is a bit tricky since I rely on an iCUE setup with limited RGB options. that’s why I’m thinking about two sticks without RGB to avoid any visual issues and because my RAM isn’t available or would be much more expensive if I go back to the original sticks. (Corsair RAM)
It might still have problems. It performs better than a lower voltage kit at 1.4V compared to a 1.35V kit, likely because they share the same memory IC. However, it's usually wiser to replace your existing kit with a higher capacity one—like a 2x32GB option—instead of sticking with the current setup. Even with Mushkin kits, mixing memory and running high-speed DDR4 isn't ideal. Last time I tried mixed overclocking, I hit around 3600MT/s without major issues, but it's risky. If you don’t plan to tweak memory settings, consider swapping to a 2x32GB kit and lowering the speed to 3600MT/s instead of pushing it higher.