Ram volts?
Ram volts?
I asked about RAM voltages, so my understanding is limited. A CPU has a memory controller operating at certain voltages, and RAM functions at another. My current build uses a 7700X with Corsair Vengeance DDR5 6000 30CL (30-36-36-76). Essentially, the Vengeance runs at 1.4 volts, but some users lower it for stability and because that voltage requires overclocking the memory controller. Reducing the voltage might affect speed and timing. If I didn’t change the RAM voltage, what would the system default to, and would that be underclocking or optimal?
The EXPO memory profile specifies 1.4 V as its rated and verified voltage. Slightly reducing it may be feasible, though it can lead to instability. This outcome largely depends on how your RAM behaves. You might adjust the voltage in small steps (like 10 mV increments), but this won’t improve performance. Concerning memory speed, the answer is a definitive no. The BIOS settings let you modify several RAM parameters, and voltage is just one factor among many. It’s best to maintain the current profile, as optimizing it usually requires extensive testing and patience.
It can actually lower stability, though not in a significant way. These factors aren't directly connected. 1.4V technically indicates you're exceeding the memory controller's voltage limit, but 1.4V is fine for it, so I don’t have to be concerned. Boosting the memory controller overclocking mainly depends on the memory speed, and DDR5 6000 is confirmed to function. JEDEC recommends 1.1V, which means the memory setup is more nuanced than that. The controller uses vSOC, VDDP, and VDDIO, while memory modules have separate voltages like Memory VDD, VDDQ, VPP, and VDDIO—they each operate at different default levels and react differently to varying voltage settings.
Having the VDD at 1.4v wasn't related to the memory controller. VDDIO and VDDQ are voltages used for communication with the memory controller, which can be adjusted lower. For instance, I'm using 6200MHz CL28 at 1.5v VDD, with 1.35v on VDDIO and VDDQ, and it performs well even in a 2x48gb configuration.