Ram volts?

[yolotimon]

I had a question about ram volts, so my knowledge goes as far as that i know a cpu has a memory controller thingy that runs at a maximum of ... volts and that ram runs at ... volts, right now i have a pc build that id like to build with a 7700x and corsair vengeance ddr5 6000 30cl (30-36-36-76) that 

 

So, how does all of it work? The corsair vengeance work at 1.4 volts but i have seen people lower that for stability and because having it at 1.4 means overclocking that memory controller(?)

 

Doesnt lowering the volts also decrease the speed and increase the timings? And if i were to not touch the volts on the ram, what voltage would it automatically go to and would that be over, underclocking or the best spot

[DutchFakeTuber]

The EXPO profile of the memory uses 1.4 V as a rated and tested voltage.
Lowering the voltage slightly is possible, but it can also cause instability.
This completely depends on the behaviour of your RAM stick.

 

You can lower the voltage slightly (e.g., in 10 mV increments), but it will not positively impact the performance.

 

To come back to your question regarding memory speed, the short answer is no.

The BIOS menu allows you to change many parameters of your RAM, and memory voltage is only one of many.

I would advise keeping the memory profile as-is, as it takes lots of trial and error to improve the performance (from my experience).

[RONOTHAN##]

1 hour ago, yolotimon said:

 

Doesnt lowering the volts also decrease the speed and increase the timings?

No. It can decrease the stability though. 

 

1 hour ago, yolotimon said:

because having it at 1.4 means overclocking that memory controller(?)

Not really. One does not have anything do with the other. 1.4V technically would mean that you're overvolting the memory controller, but 1.4V is perfectly safe for the memory controller so I wouldn't worry about it. Overclocking the memory controller is purely dependent on the memory frequency, and DDR5 6000 is what's guaranteed to work. 

 

1 hour ago, yolotimon said:

And if i were to not touch the volts on the ram, what voltage would it automatically go to

JEDEC voltage is 1.1V

 

1 hour ago, yolotimon said:

i know a cpu has a memory controller thingy that runs at a maximum of ... volts and that ram runs at ... volts,

So slight correction, memory is more complicated than this and there's actually multiple voltages for each of these. The memory controller has vSOC, VDDP, and VDDIO that it runs on, and the memory sticks have Memory VDD, Memory VDDQ, Memory VPP and VDDIO (this is the voltage that the memory communicates with the memory controller at). All of these have a different default voltage and behave differently with more/lower voltage. 

[HoneyBadger84]

Having the VDD at 1.4v had nothing to do with the memory controller. VDDIO and VDDQ are voltages used to talk to the memory controller, those can be set lower. 

 

Example:

I'm running 6200MHz CL28 at 1.5v VDD, with 1.35v on VDDIO & VDDQ and it's rock stable. On a 2x48gb kit no less.