My computer refuses to post with any form of RAM overclock.
My computer refuses to post with any form of RAM overclock.
DDR4 might work at 1.5 volts, though there are reports suggesting that Intel's memory controller could face problems with the same voltage, potentially affecting Core I9 9900K processors when using memory at 1.5 volts.
The voltage applied to the RAM shouldn't influence the memory controller. Ram voltage refers to the actual voltage reaching the physical slot. If the VCC/System agent voltage is increased to 1.5v, problems could arise because the memory controller typically operates optimally between 1.1v and 1.2v. JEDEC specifies DDR4 voltages between 1.2v and 1.4v, but this doesn't account for user-defined settings. These limits exist to protect both the RAM and the slot, as well as the power components like MOSFETs. The memory controller only receives data signals from the CPU or motherboard, not voltage from the RAM slot itself.
Ram voltages may indeed harm the CPU when they become too high. All Nehalem-compatible motherboards include a caution against exceeding 1.65 volts for RAM, especially with DDR3 chips that operate at higher voltages compared to DDR4.