P775DM3-G with Gskill Ripjaws 3200MHz

Discussion in 'Sager and Clevo' started by thanthien867, Mar 7, 2019.

  1. thanthien867

    thanthien867 Notebook Enthusiast

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    (Sorry for my bad English because I'm French ^^)
    Hi,

    I have a P775DM3-G (with 7700K) and I just bought a kit 2x16GB Gskill DDR4 3200MHz but now I’m struggling to enable the XMP profile.

    At first, I got it installed in RAM3/RAM4 slots (behind the bottom cover), the system didn’t even POST. So, I switched to RAM1/RAM2 slots under the keyboard. It was the same thing.

    Then I contacted my reseller (PCSpecialist, I know they are not Prema Partner, unfortunately btw) for a BIOS update. I think they have sent me a stock BIOS from CLEVO (1.06.11). I also did the trick that I installed a stick first in the RAM4 slot, then enabled XMP, reboot and finally installed the second stick to RAM2 slot.

    Things went a bit better as the system can boot normally but as soon as I get into Windows it crashes with BSOD.

    I tried to bump the CPU Voltage a little bit. I set Core Voltage to Override, disable the offset voltage and bump around 1.25-1.4V. It’s didn’t work either. I also noticed that my PC always reverse to set the offset voltage to the default value (-100mV) after each reboot.

    Since my BIOS doesn’t have much options so I’ve used Intel XTU to bump VCCSA a little bit by increasing the SA offset voltage. But as soon as I set the XMP then reboot, my PC doesn’t even POST like in the first place.

    As of now I’m running @2400MHz, Memtest+ gives no errors so I think it’s can be a faulty RAM.

    Can anyone help me about this ?
     
    Last edited: Mar 7, 2019
  2. jaybee83

    jaybee83 Biotech-Doc

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    first off, set everything to stock in bios, especially CPU VCore & clocks. so just load default values, you dont want any cpu instabilities messing with the RAM testing.

    then bump both VCCSA and VCCIO voltages to 1.25 V and manually set VDIMM to 1.35 V. reboot to apply the voltage changes. only then try to enable the XMP profile, again starting first with only one stick, then adding the second.

    also, when your laptop boots with black screen, let it cycle for 5-10 minutes, you will notice that it will keep rebooting, with the mobo trying different settings and thus "training" itself and the RAM until it finds stable settings.

    good luck!
     
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  3. thanthien867

    thanthien867 Notebook Enthusiast

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    Thanks for the reply.
    How can I change the VCCSA and VCCIO beside XTU because I don't have a Prema BIOS ?
     
  4. jaybee83

    jaybee83 Biotech-Doc

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    aside from XTU, you can also try Throttlestop.
     
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  5. jaybee83

    jaybee83 Biotech-Doc

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    be aware that anything going above 3000 Mhz on RAM requires lots of tweaking and finetuning to get it stable on laptops :)
     
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  6. thanthien867

    thanthien867 Notebook Enthusiast

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    [​IMG]

    Here is my ThrottleStop Windows. I couldn't modify VCCSA directly. All I have is just the offset voltage like in XTU or in BIOS
     
  7. jaybee83

    jaybee83 Biotech-Doc

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    Stock VCCSA is 1.05V, so you can start at +200 mV offset

    oh and adjust those VCore and Cache voltages to 0 offset.
     
  8. Meaker@Sager

    Meaker@Sager Company Representative

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    Slot 2 and 4 is single channel.
     
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  9. jaybee83

    jaybee83 Biotech-Doc

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    good point! :)

    try and stick to the two slots on the same side as the cpu, they have shorter traces and thus more chance to succeed.

    Sent from my Xiaomi Mi Max 2 (Oxygen) using Tapatalk
     
  10. thanthien867

    thanthien867 Notebook Enthusiast

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    I still see CPU-Z report them as Dual Channel ? I'm talking about those slot marks on the board. I know I should stick to the two slots at the Bottom cover but it didn't work for me so well.

    That was the thing that I have tried in the first place. No luck.
     
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