Can CPU support higher frequency RAM?

[Pulsefire]

Hi. 

CPU in question: i5-12600KF.

As intel claims official support "up to" 3200Mhz. 

 

My motherboard supports up to 5333Mhz DDR4. 

 

The RAM I would like to use is G.Skill Trident Z Royal Elite 4000Mhz at tight timings CL14. Yes. 4000Mhz at CL14. Note this is overclocked only with XMP profile. So I'm not actually tweaking any frequency or timings. This is coming out of the box (after I turn XMP on).

 

I'm worried system wouldn't be stable though, especially since PC Part Picker gives this warning: 

 

Any idea if this is way too high especially given the voltage of 1.55V ? Is this setup a total bust ? 

 

The CPU is "K" so it's unlocked and my motherboard supports the RAM frequency. And it's a high end DDR4 board so, what would the likelihood of this bricking the entire system be?

 

Also could someone explain, does running XMP count as "CPU overclock", or do I have to also overclock my CPU for it to match 4000Mhz? Since it supports up to 3200Mhz officially?

 

Would my CPU at stock only run at 3200Mhz even if my RAM is 4000Mhz?

 

Thank you in advance.

[jaslion]

Yeah it can do that but if it can do it stable or even boot is a up in the air thing.

 

They can run at 4000 cl14 but you need A LOT of tweaking and most people just end up with slower memory than if they just bought a cheaper cl16 3600mhz kit

[BetteBalterZen]

Pretty sure the i5-12600KF generally is able to handle 4000 CL14. This is a CPU from a generation when high speed memory is normal. Of course this is not guaranteed - only JEDEC speeds are. 

Enabling XMP techincally "overclocks" your CPU. It makes the memory controller work harder than under JEDEC approved speeds, hence why XMP RAM kits aren't guaranteed to work. (but still most likely will, unless it's very, very high end RAM kits)

 

You do not have to overclock your CPU's clockspeed to run with 4000 CL14 memory, or any other XMP and/or clockspeeds, you can keep your CPU at stock settings. 

[Pulsefire]

1 minute ago, jaslion said:

Yeah it can do that but if it can do it stable or even boot is a up in the air thing.

 

They can run at 4000 cl14 but you need A LOT of tweaking and most people just end up with slower memory than if they just bought a cheaper cl16 3600mhz kit

If I try to use the RAM and the frequency and timings turn out to be way too fast, 

 

is there a possibility it would brick my motherboard or CPU?

 

I could just buy the RAM, test the rig, if it doesn't work, I could just sell it and buy another pair that's slower.

[Pulsefire]

4 minutes ago, BetteBalterZen said:

Pretty sure the i5-12600KF generally is able to handle 4000 CL14. This is a CPU from a generation when high speed memory is normal. Of course this is not guaranteed - only JEDEC speeds are. 

Enabling XMP techincally "overclocks" your CPU. It makes the memory controller work harder than under JEDEC approved speeds, hence why XMP RAM kits aren't guaranteed to work. (but still most likely will)

 

You do not have to overclock your CPU clockspeed to run with 4000 CL14 memory, or any other XMP speeds, you can keep your CPU at stock settings. 

Thanks for clarifying. 

[jaslion]

21 minutes ago, Pulsefire said:

If I try to use the RAM and the frequency and timings turn out to be way too fast, 

 

is there a possibility it would brick my motherboard or CPU?

 

I could just buy the RAM, test the rig, if it doesn't work, I could just sell it and buy another pair that's slower.

Just return it? 2 week return policy is normal and this is something you'll find out day 1.

 

1.55v is not happening on alder lake anyway and if you do thats really really bad for the cpu.

 

Id just get proper working memory

[STELDR]

Ram speed depends on the motherboard chip. 

[Pulsefire]

20 minutes ago, jaslion said:

Just return it? 2 week return policy is normal and this is something you'll find out day 1.

 

1.55v is not happening on alder lake anyway and if you do thats really really bad for the cpu.

 

Id just get proper working memory

Oh yeah... the return policies. Forgot about those.

 

Der8auer is hitting 1.6V on multiple different Alder Lake CPUs.

[jaslion]

5 minutes ago, Pulsefire said:

Oh yeah... the return policies. Forgot about those.

 

Der8auer is hitting 1.6V on multiple different Alder Lake CPUs.

Yeah entirely possible just not recommended long term due to degredation.