Help getting 3000MHz RAM to boot in P750DM2

Hi guys,

So I just received my 32gb 3000MHz ram kit from corsair and I installed it. It runs @ 2666MHz out of the box but once I switch to XMP profile it does not boot.

I heard about setting manual timings so I attempted that and simply changed them to 16-18-18-39 in order in BIOS and it loaded but still at 2666. Perhaps I changed the wrong boxes? I saw another guy managed to run the ram on his machine so I guess its possible.

Would appreciate any help.

 

Update : Managed to get it to boot using XMP Profile #2 which then went back to #1 by its self but the RAM is being unstable and keeps restarting...
Any ideas?

EDIT : I'm not sure if this matters but I have a -100mV undervolt on my CPU.

 

You might need to do a full CMOS / NVRAM reset and then plug in the new modules. Before booting the system up.

 

Thanks for the info. Do you know how I'll be able to do that?

 

See if this helps - http://forum.notebookreview.com/threads/clevo-p870d-fans-not-working-well.794572/#post-10308234

Also, in regards to getting the system to recognize the memory, another thread which may be relevant - http://forum.notebookreview.com/threads/clevo-p870dm-g-wont-boot-after-swapping-ram.785267/

There is also a thread (IIRC from Prema) describing steps on how to insert one stick, starting the system, shutting down, and then inserting the second. I didn't search for it, but I do know I've seen a description on how to get XMP profiles to 'stick'. (pun intended).

 

Ah physically removing the battery seems to be outside my comfort zone
The thing is the system did recognize the memory originally but after some usage it kept restarting... Thanks for the info tho!

 

Removing the NVRAM battery shouldn't be any big deal. I *think* on your model, you remove the bottom cover, there's a screw marked "KB" for keyboard. You remove that. Then on the other side, the keyboard is still held in place by magnets. Using a small piece of plastic, you pop that up, and the battery should be found there. If you put in the memory, then you should already know how to do this.

If you *do* remove this, take EXTREME caution. (Sorry if this is scaring you). The battery retention clips are plastic, so you have to remove the battery using the correct force. Again searching these forums should be your guide. It's not hard at all once you've seen a video or a post describing the procedure. Anyone can do it.

However some folks just jump in and try to remove it backwards or force it and it breaks the retention clip. If you find the video, you'll see it's not so hard once you know how.

 

On his system it should be next to the CPU socket. So ez pz.

He will need to take that and the system battery out. Then power drain the components by pressing the power button a couple of times and put everything back in.

 

Doesn't this only help when the system doesn't boot at all with the new RAM? Because mine does but is unstable.

 

Problem is, this is just me guessing, so please take this with a grain of salt.

If it somehow got configured with the wrong timings from a boot with a previous XMP profile or mis-read something, it may still boot, but cause BSODs or other instabilities. Resetting the NVRAM would clear it for certain.

Again, this just a wild-a%&$ guess. I apologize for the slinging of spaghetti at the wall, but hopefully something sticks.

 

Ill try it anyhow, thanks.

Anyone else has any input?

Sent from my SM-G935F using Tapatalk

 

I'm sticking with the 133 base clock for my ram so 11*133 as it's more stable I have found.

I am running at 16-17-17-38 instead of 16-18-18-42 so that's actually better than the stock speeds by a fair bit.

 

I'm a bit confused, is that 3000MHz ram? And if I run it at your timings will it boot?

 

*gets out magic 8 ball overclocking edition and gives it a shake*

It says..... "who can tell?"

You'll have to test anything out of spec yourself

 

True true, so for now should I just set those timings? I mean there is anything else to change, i think our multipliers are the same. Sorry its my first time messing with RAM speeds.

 

I suggest using the stock XMP timings at 133 x 11 first and seeing if that works well for you.

 

Is that x11 the memory multiplier setting in the XTU?

 

I've done mine from the BIOS on my NP9873, we unlocked some options in our desktop series.

XTU should manage though.

 

Alright so what im understanding here is copy the settings from the XMP Profile to a custom one and change the multiplier for 20 to 11. Ill do that as soon as I get back home.

Sent from my SM-G935F using Tapatalk

 

Also change the base clock from 100 to 133 in the memory options.

 

I believe you have got corsair vegence ram which has a default timing of 16-18-18-39. whereas i think meaker has got g.skill ram with default timing of 16-18-18-43. so the exact settings that worked for him may not work for you. Yo will have to tinker with these a little bit.

 

Alright so I've done as you said and now I'm booted and have been stable for awhile.
As per CPU-Z I'm getting about 1463MHz on each channel, is this about right?
Timings taken directly from the XMP profile.

 

Yes that's correct (11x 133 = 1463).

 

Great, so that's about as high as I'll go without crashing I guess?
What should I tinker with to see if I can get it a bit higher?

 

Feel free to tinker if you like but that speed with tighter timings is better over all than 1500mhz at the looser ones.

(Speed/latency = overall latency)

The improvement to the above makes up for the tiny loss in bandwidth.

 

Oh alright I got you, I guess I'll leave it as it is then. Thanks a bunch for the help!

 

Not a problem, don't sweat too much over the memory of course as the impact is so small.

 

Pretty close to what's happening. @Mr. Fox , had a post explaining exactly what was going on.
Basically left over settings from previous modules and / or incorrect left over timings.

 

Thx for the affirmation. Good to know I was probably close enough to the mark.

 

I am always happy when I finally find that nice stable sweet spot for memory, it can be a pain to properly stability test it.

 

It will run at 3k, but not plug and play as one would hope.

 

Could please share the manual how to get 3000MHz with this Corsair memory?

I have the same memory modules, but they working only with 2666MHz by default.

I don't know what to do.

 

I would call up your system supplier and get their help. You either need to go into the bios or set it in XTU depending on the options they have unlocked in the bios.

 

Try XMP profile 2 first. Then try profile 1. (Located in the bios under memory options)
If it does not auto boot up after about 2 to 3 auto tries, then you may have to do what we did to get ours working.