(32GB) 3200MHz shows as 2133MHz (XMP) on Z170 Pro Gaming motherboard

Toonhaze · Sep 7, 2016

Hi

I just bought a new PC.

OS: Windows 10 64-bit Home
Motherboard: Asus Z170 Pro Gaming
CPU: Intel Core i7-6700K <4.2GHz Quad LGA1151
GPU: Nvidia Asus GTX1070 8GB STRIX
RAM: DDR4-3200 32GB Corsair Vengeance XMP RAM (4 x 8GB DIMMs)

(hardware info copy-pasted directly from the receipt)

I am confused about the RAM frequency, because it shows correctly in some places (3200MHz) and in other places it shows as 2133MHz. I noticed this first when I was in my BIOS. My BIOS looks like this: https://youtu.be/ny8k8OeKwy0?t=4m36s
(My BIOS version is: 1904, build date: 05 july 2016)

The frontpage of my BIOS (EZ-Mode) looks like this:

http://imgur.com/a/3NnyQ

And here are more pictures of my BIOS where both the correct and incorrect speeds are shown:

http://imgur.com/a/Er4hG
http://imgur.com/a/2KCu4
http://imgur.com/a/leIMC
http://imgur.com/a/jsQ6h

Then I used a program called CPU-Z and here are the results (2133MHz):

http://imgur.com/a/65qlB

But when I ran the command "wmic memorychip get speed" in Run > CMD it showed the correct speeds:

http://imgur.com/a/HfxNK

I am really confused about the mixed info...

Here is the manual of my motherboard:
http://dlcdnet.asus.com/pub/ASUS/mb/LGA1151/Z170-PRO-GAMING/E10719_Z170_PRO_GAMING_UM_V2_WEB.pdf

If you look up the RAM section of the manual it shows no 32GB at 3200 (OC) frequencies.

I called my place of purchase several times and they told me not to worry and that everything works as intended. As long as the XMP profile is enabled in the BIOS.

But is it? Is there any other way I can ensure that my RAM modules are running at the right speed? Maybe another software?

I know it's probably not much of a performance difference anyway, but I paid extra for the 3200MHz RAM and mistakes do happen.

I would love to hear from the experts in here.

What do you think?

Thanks in advance.

-Alex

EDIT: I remembered reading somewhere, that a solution to this could be increasing voltage by 0.1 (maybe here? http://imgur.com/a/Er4hG ) but to me it sounds a bit risky / dangerous

010010 · Sep 7, 2016

Toonhaze :

Hi

I just bought a new PC.

OS: Windows 10 64-bit Home
Motherboard: Asus Z170 Pro Gaming
CPU: Intel Core i7-6700K <4.2GHz Quad LGA1151
GPU: Nvidia Asus GTX1070 8GB STRIX
RAM: DDR4-3200 32GB Corsair Vengeance XMP RAM (4 x 8GB DIMMs)

(hardware info copy-pasted directly from the receipt)

I am confused about the RAM frequency, because it shows correctly in some places (3200MHz) and in other places it shows as 2133MHz. I noticed this first when I was in my BIOS. My BIOS looks like this: https://youtu.be/ny8k8OeKwy0?t=4m36s
(My BIOS version is: 1904, build date: 05 july 2016)

The frontpage of my BIOS (EZ-Mode) looks like this:

http://imgur.com/a/3NnyQ

And here are more pictures of my BIOS where both the correct and incorrect speeds are shown:

http://imgur.com/a/Er4hG
http://imgur.com/a/2KCu4
http://imgur.com/a/leIMC
http://imgur.com/a/jsQ6h

Then I used a program called CPU-Z and here are the results (2133MHz):

http://imgur.com/a/65qlB

But when I ran the command "wmic memorychip get speed" in Run > CMD it showed the correct speeds:

http://imgur.com/a/HfxNK

I am really confused about the mixed info...

Here is the manual of my motherboard:
http://dlcdnet.asus.com/pub/ASUS/mb/LGA1151/Z170-PRO-GAMING/E10719_Z170_PRO_GAMING_UM_V2_WEB.pdf

If you look up the RAM section of the manual it shows no 32GB at 3200 (OC) frequencies.

I called my place of purchase several times and they told me not to worry and that everything works as intended. As long as the XMP profile is enabled in the BIOS.

But is it? Is there any other way I can ensure that my RAM modules are running at the right speed? Maybe another software?

I know it's probably not much of a performance difference anyway, but I paid extra for the 3200MHz RAM and mistakes do happen.

I would love to hear from the experts in here.

What do you think?

Thanks in advance.

-Alex

EDIT: I remembered reading somewhere, that a solution to this could be increasing voltage by 0.1 (maybe here? http://imgur.com/a/Er4hG ) but to me it sounds a bit risky / dangerous

I am no Expert but i believe that the JEDEC number is being displayed there; as you have the XMP profile enbaled then that is not a problem and your ram will be fine. If you disable the XMP profile then it will run at 2133MHz.

EDIT: Also note that using the XMP profile can cause instability if you also overclock the CPU as it is basically a Overclock within itself.

Toonhaze · Sep 7, 2016

Thanks for the answer. So everything runs as it should and I should leave it be?

010010 · Sep 7, 2016

Toonhaze :

Yes it will be fine; just for your own peace of mind you could use CPU-Z to have extra sources pointing to the same result (Note as the RAM is dual in-line memory it will be half of what the RAM is running at and will, or should, display 1600MHz).

Toonhaze · Sep 7, 2016

Thanks

nice to finally get this out of the way

Toonhaze · Sep 7, 2016

One final question. In my manual it says a few things that contradict each other. Under Memory it says:

"4 x DIMM, maximum 64 GB, DDR4 3400(O.C.)*/3333(O.C.)*/3200(O.C.)*/
3100(O.C.)*/3000(O.C.)*/2933(O.C.)*/2800(O.C.)*/2666(O.C.)*/2600(O.C.)*/
2400(O.C.)*/2133 MHz, non-ECC, un-buffered memory
Dual-channel memory architecture
Supports Intel
®
Extreme Memory Profile (XMP)
* Hyper DIMM support is subject to the physical characteristics of individual CPUs. Please
refer to Memory QVL (Qualified Vendors List) for details.
** Refer to
www.asus.com
or this user manual for the Memory QVL (Qualified Vendors
List)."

But later (under "DDR4 3200 (O.C.) MHz capability") it says that only maximum of 16GB RAM is supported. <--- Is this a mistake?

010010 · Sep 7, 2016

Toonhaze :

That is probably referring to per RAM, so it can not support 2x32GB sticks of RAM; only 4x16GB sticks.

Kari · Sep 7, 2016

010010 :

and that is only the official value, they probably didn't have any 32GB modules to do the validition testing. My old p55 mobo only officially supports 4GB modules (times 4 so 16GB in total), however it is running fine with 2x8GB sticks and I've seen people running 32GB setups as well (4x8). So they can only guarantee setups that they can test it with.

010010 · Sep 7, 2016

Kari :

Also the MOBO may actually support it but it may not run the memory at its full capability. Besides i don't think there are any 32GB modules available anyway; only ECC sticks for Servers which will be why they didn't test those modules.

Kari · Sep 7, 2016

010010 :

well not yet there aren't any, but in 5 years time sure. When p55 chipsets were launched the 4 gig DDR3 modules were new and expensive, 8 gigs unheard of. But nevertheless works flawlessly all the way to the 16th gig as well, and speeds gone up too; I was able to set the mem multi to the highest value and the resulting effective speed is still slightly below the rated speed of the modules even with my 42% baseclock OC and all this with the pretty much cheapest modules available $/GB.

'Modern' memory controllers are pretty smart

edit the only limit there seems to be is the memory speed multiplier, so it wouldn't make much sense to buy those ultra fast modules when I can only take them to 1810MHz... The current chipsets might be more flexible...

010010 · Sep 8, 2016

Kari :

010010 :

well not yet there aren't any, but in 5 years time sure. When p55 chipsets were launched the 4 gig DDR3 modules were new and expensive, 8 gigs unheard of. But nevertheless works flawlessly all the way to the 16th gig as well, and speeds gone up too; I was able to set the mem multi to the highest value and the resulting effective speed is still slightly below the rated speed of the modules even with my 42% baseclock OC and all this with the pretty much cheapest modules available $/GB.

'Modern' memory controllers are pretty smart

edit the only limit there seems to be is the memory speed multiplier, so it wouldn't make much sense to buy those ultra fast modules when I can only take them to 1810MHz... The current chipsets might be more flexible...

5 Years seems a bit much to me for this prediction (What with the speeding technology advancement, quantum computing and all) im sure in 5 years 32 GB RAM sticks will be the sticks you find collecting dust in the cupboard from that old i7 Gaming PC you had a while back

.

Kari · Sep 8, 2016

010010 :

aww now you hurt the feelings of my 6 year old rig

010010 · Sep 9, 2016

Kari :

Metal and PCBs have no feelings, nor age; their elments were forged in the stars

.

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(32GB) 3200MHz shows as 2133MHz (XMP) on Z170 Pro Gaming motherboard

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