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CPU and RAM speed

Ksornix
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Hi Guys

i have a question were i found a lot of conflicting information on, so i would like to hear ure opinion on it.

In the atacht file is my CPU and RAM speed, i found diffrent articels or coments saying that it is eater irelevent wich speeds the ram has in compareson to the cpu or that i need to change the speeds of the RAM/CPU acording to the other (if thats the point wich settings should i use)

 

-CPU: Intel i7-12700K

-RAM: DDR5 5200MHz 32GB

 

greatings 

Ksornix

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No, they don't have a relationship to each other.  CPU and RAM are separate in regards to their speeds.

 

Some CPU's run better with certain speed RAM but you don't alter your speeds to each other.  Maybe you heard that AMD or Intel likes certain speed RAM?

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41 minutes ago, Ksornix said:

speeds the ram has in compareson to the cpu or that i need to change the speeds of the RAM/CPU acording to the other

When you heard they should be changed based on the other, do you also remember hearing “Gear One” and “Gear Two”?

I'm not actually trying to be as grumpy as it seems.

I will find your mentions of Ikea or Gnome and I will /s post. 

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Why is the 5800x so hot?

 

 

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No cpu core and ram speed are not linked

 

48 minutes ago, Dedayog said:

Some CPU's run better with certain speed RAM

Basically theres 1:1 fclk, 1:2 fclk, or desync fclk for amd. And gear 1 or gear 2 for intel. Oh and some cpus behave differently than others due to differing imcs

 

For zen3 vermeer its usually 3800-4000 but some can run 4200 in 1:1 fclk though extremely rare, 1:2 would be theoretically 5600-6400 but thats impossible unless you chill the i/o die and ram (and ram gotta be some high bin djrs too) though impractical even if possible and high freq ram is a PITA

 

For zen3 cezanne (apus w monolithic die) somewhere 5000+ 1:1 fclk cause absolutely insane fclk capability (2500+), i think ram speed does matter quite abit here due to only 16mb cache considering the 5800x3d seems to not scale much above 3200 cl16 ram performance wise likely due to the massive cache

 

For 12th gen somewhere around 4000-4400 (4400 for the really good samples) gear1, gear2 is needed when the imc cant clock higher (kinda like amds fclk but no desync mode for all i know) but then that would be impossible 8000+ speeds (wr is 7200) for ideal imc clock, though the ram will compensate quite abit sooner than 8000 for the performance deficit of running gear2 just by sheer speed. Not sure on ddr5 behaviour cause i havent done any research on that and i dont intend to for the next year or 2 so imcs, mobos, and the ram ics themselves can mature and info to be abit more widespread. And btw that slow 5200 ddr5 likely cant clock above 5400 unless you are lucky and didnt get garbage micron 16gbit a die

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OK 

Thanks for helping me getting some clarity in this question

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