Question How To Find Out Motherboards Max RAM Speed Capability?

[NathW90]

Hi all,

I'm currently using 16GB HyperX Fury 3733mt/s DDR4 RAM, and am considering upgrading to 32GB Corsair Vengeance Pro SL 4000mt/s RAM, which also has lower CL timing.

My question is, how do I find out for certain that my motherboard is capable of utilising the full 4000? Currently my RAM is set to the 3733mt/s using the XMP profile in the BIOS settings - and I can see this is working as it should using CPU-Z - but I'm not sure how to find out if it can do 4000?

It's an HP OMEN Intel Z690 motherboard.

Cheers!

 

[JohnBonhamsGhost]

currently using 16GB HyperX Fury 3733mt/s DDR4 RAM, and am considering upgrading to 32GB Corsair Vengeance Pro SL 4000mt/s

seriously doubt you'll notice any performance improvement unless the timings are significantly lower.

are you just having an issue with lack of available RAM?
then a 32GB(2x 16GB) kit would possibly be worth it.
if you could find a cheaper, even lower latency 3600 kit it would be an even better option.

 

[NathW90]

seriously doubt you'll notice any performance improvement unless the timings are significantly lower.

are you just having an issue with lack of available RAM?
then a 32GB(2x 16GB) kit would possibly be worth it.
if you could find a cheaper, even lower latency 3600 kit it would be an even better option.

Just juicing the PC up for some 4K gaming. Will also be going from my 12700K to a 14900K and from my 3070 Ti to a 4080 Super.

The current RAM is 3733mt/s and CL22. The Corsair RAM mentioned in the original post 4000mt/s and CL18, but I'm struggling to confirm whether my board actually supports the 4000 or not.

 

[CountMike]

Just juicing the PC up for some 4K gaming. Will also be going from my 12700K to a 14900K and from my 3070 Ti to a 4080 Super.

The current RAM is 3733mt/s and CL22. The Corsair RAM mentioned in the original post 4000mt/s and CL18, but I'm struggling to confirm whether my board actually supports the 4000 or not.

It's not only up to MB, it's also about CPU where IMC (Internal Memory Controller) is located and also has te be overclocked above it's base frequency. Yes OC, because base frequency for DDR4 is 2133MHz.

 

[geofelt]

HP pre builts are not planned to be upgradeable.
Do you know for certain that the motherboard has a bios that will support a 14900K?
If the ram you buy does not get to 4000/18, it should run at lowered settings.
The benefit of 32gb vs. 16gb is probably more important.

 

[Eximo]

For what it is worth I run 2x16GB 4000Mhz CL18 on my 12700KF. Trident Z Neo. I only bought it because I wanted to keep my older DDR4 with my i9-10900F.

 

[SkyNetRising]

Will also be going from my 12700K to a 14900K and from my 3070 Ti to a 4080 Super.

Of course, you're aware of Intel 13th/14th gen cpu degradation issue.
And you are still willing to upgrade to 14th gen?

https://www.tomshardware.com/pc-com...tability-troubles-everything-you-need-to-know

 

[NathW90]

HP pre builts are not planned to be upgradeable.
Do you know for certain that the motherboard has a bios that will support a 14900K?
If the ram you buy does not get to 4000/18, it should run at lowered settings.
The benefit of 32gb vs. 16gb is probably more important.

Oh, really? Part of the selling point used in the description for the OMEN PC's is that they're easily upgradeable. I have always assumed that being a Z690 board it would definitely be compatible with a 14900K.

How do I find out for certain? I do know there is a BIOS update available for my system.

 

[Eximo]

Either HP will have the information, or the motherboard OEM.

 

[NathW90]

Either HP will have the information, or the motherboard OEM.

https://support.hp.com/gb-en/document/ish_5037050-5037113-16

I think this is my board, from what I can gather. Seems to indicate the 14 series CPU's are compatible, but a maximum 3733mt/s RAM.

 

[NathW90]

Of course, you're aware of Intel 13th/14th gen cpu degradation issue.
And you are still willing to upgrade to 14th gen?

https://www.tomshardware.com/pc-com...tability-troubles-everything-you-need-to-know

Has this not now been resolved by Intel?

 

[Eximo]

Has this not now been resolved by Intel?

We've only had about a month with the fix in the field, so it is still questionable.

 

[NathW90]

We've only had about a month with the fix in the field, so it is still questionable.

Fingers crossed, then.

Back to the RAM... Would I be right in saying that - per the calculator in the image - option 2 should actually be the best in terms of speed/responsiveness, despite running at lower mt/s than option 3? Number 1 is my current RAM and 2 and 3 are the specs of two others I'm considering for the upgrade if the 4000mt/s isn't doable.

 

[Eximo]

Well, generally yes. Some applications will prefer the bandwidth over the latency, but most games lean towards latency still.

I would look at BIOS options to see if you can manually configure for 4000, if so, and you buy it, worst case you tune it to 3733 or 3600 with tighter timings.

 

[SkyNetRising]

Has this not now been resolved by Intel?

Not really. They're solving it by limiting cpu power use.
It's supposed to slow cpu degradation.
But we don't yet know, it it fixes the issue and stops degradation completely.

Highly probable, this will be solved only with release of following generation
(15th gen/core ultra desktop).

 

[Eximo]

Not really. They're solving it by limiting cpu power use.
It's supposed to slow cpu degradation.
But we don't yet know, it it fixes the issue and stops degradation completely.

Highly probable, this will be solved only with release of following generation
(15th gen/core ultra desktop).

That was the early recommended solution, and part of the BIOS updates that include the current solution. The microcode fix is more low level and prevents the CPU from utilizing boost voltages when the CPU is already at a high temperature. It was basically overshooting and causing short duration voltage spikes.

On an off the shelf Z motherboard you can still overclock as much as you want and reset all the defaults.

There were many motherboards giving all K sku CPUs with a 320W limit and unlimited power duration though. When the larger K sku CPUs have an intended 293W limit. Intel has basically made the motherboard manufacturers adhere to the correct setting on a per chip basis. There were also some other minor settings that weren't being properly set by the OEMs that were corrected.