***The Official MSI GT83VR Titan SLI Owner's Lounge (NVIDIA GTX-1080's)***

Discussion in 'MSI Reviews & Owners' Lounges' started by -=$tR|k3r=-, Aug 13, 2016.

  1. DaMafiaGamer

    DaMafiaGamer Notebook Deity

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    Fair enough. It’s always been an issue with laptops that they can’t run memory clocks above 3000mhz or 3200mhz. The controllers can't handle speeds above this frequency.
     
    Last edited by a moderator: May 22, 2019
  2. gt83vr6reHelp

    gt83vr6reHelp Notebook Consultant

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    Yeah all comes down to the bios and sometimes the IMC. Pretty sure that If I could change dram voltage from 1.20v to 1.25v or higher things would be different ;/. The IMC on these gt83 machines are actually really good considering they came out 3 years ago. I can run up to cl14 2800mhz with 4x8gb, cl15 3000mhz with 2x8gb, and i'm not sure what the max speed would be with 2x16gb or 4x16gb ram sticks but I think it would probably be around the 2400-2666 range. EDIT: All 4 sticks @3ghz now. Just need to tighten timings and test for stability.
    Here is Aida64 results.
    Stability tested with aida64 and memtest64(22 loops 95% ram utilization, no errors). Not sure if it is sufficient enough stability testing though.
    CL15 3000mhz
    CR-1
    CL-15
    tRCD/tRP-15
    tRAS-35
    tRFC-374(this is as low as this will go)
    tREFI-65535
    tWR-16
    tRRD-4
    tRTP-8
    tFAW-23
    tCWL-15
    Memory strap-30
    Memory clock multiplier- 1.00

    Memory Reads-45,552 MB/s

    Memory Writes-46,751 MB/s

    Memory Copy-41,623 MB/s

    Memory Latency-42.2 NS

    IMC is pretty good, performing on par or better than most cl15 3000mhz desktop sticks with the exception of tRFC(pretty sure it's the IMC not letting me go lower, these are samsung b-die ram sticks).

    Going from stock 2133mhz to oced 3000mhz increased everything across the board by about 33% or more. Laptop even feels faster/snappier with 2x8gb 3000mhz ram vs 4x8gb 2800mhz ram. Didn't really think i would notice a difference between 2.8ghz and 3ghz ram but I do.
     
    Last edited: May 22, 2019
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  3. gt83vr6reHelp

    gt83vr6reHelp Notebook Consultant

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    Managed to stabilize all 4 sticks at 3000mhz with the same timings and I was able to bring down trfc to 327.
    ran 20 loops straight in memtest64 using all 32gb. No errors.

    Tried booting 3100mhz again at the 3000mhz timings but got "memory management" bsod again right away during aida64 stress test. May have to increase system agent a bit, only at 1.15. Or I might have to edit the timings to match the latency of 3k i dunno. If there wasn't enough dram voltage supplied it wouldn't have booted in the first place right?, or can insufficient dram voltage still allow you to boot but could be unstable once in windows?

    Also, obligatory xtu benchmark. Daily Driver settings https://hwbot.org/submission/4161222
     
    Last edited: May 23, 2019
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  4. gt83vr6reHelp

    gt83vr6reHelp Notebook Consultant

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    I must say, overclocking is a very satisfying hobby. Figuring this **** out is hella fun. I've gotten these to boot into windows as high as 3333mhz so far, working on getting 3333mhz stable.

    Currently have 4 x 8gb sticks stable at @3200mhz CR1 16-15-15-35-374. Yay.
     
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  5. hmscott

    hmscott Notebook Nobel Laureate

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    Yup, it's been a great 40 year ride exploring the physical and software tweaks and tunings, and increasing the clock speed was the first obvious thing for me to do, but back then you had to physically remove the "crystals", but as a Amateur Radio operator from 8 years old, I had already gotten used to swapping xtals for transmitter frequency changes...that was before "VFO's".

    "Hey, there's crystals in these darned things - computers, I wonder if I can change their frequency to make them run faster??..." :)

    How about you?, did you start with software tuning, hardware tuning? OC or voltage tuning first?
     
  6. gt83vr6reHelp

    gt83vr6reHelp Notebook Consultant

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    Oldschool :)

    I started overclocking a year ago when I bought the laptop when I joined this group. You, falkentyne and lizard helped me out greatly ^^. Started ocing with dragoncenter last year, then got rid of it once I started getting familiar with the bios. Just been tuning everything through the bios. OC first on the ram. I still don't know how to increase the dram voltage on this motherboard. In the memory section it says "N/A" with a dropdown menu to the right that allows me to select 1.2, 1.25, 1.30, 1.35 all the way up to 1.65v. The dram voltage never applies though because when I go back into the bios it is back at 1.20v. HWinfo says my dram is currently at 1.200v.
     
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  7. gt83vr6reHelp

    gt83vr6reHelp Notebook Consultant

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    This is a new quad channel corsair vengeance CL19 4000mhz kit that i'm working with. It's samsung b-die. Figured they would give me the best chances of hitting a good OC on this mobo at the tightest possible timings. The ram was only certified QVL for Asrock mini-itx/ac motherboards with Skylake-X processors. I figured i'd take the gamble and see how far I can go at 1.20v. Maybe this motherboard has adaptive dram voltage and it supplies whatever is needed for the current clock or something or maybe I truly am locked in at 1.20v dram voltage ;/.
     
    Last edited: May 26, 2019
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  8. hmscott

    hmscott Notebook Nobel Laureate

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    Yup, even if your BIOS had unlocked menu items, it's more likely than not the end points are locked down from access by owners. You may be able to trick the sensors to get what you want in some cases.

    Laptops don't get the loving care that desktop BIOS's provide for tuning, it's sad really, but in essence companies decide there is hardly any headroom for power and thermals as designed and so to reduce RMA's they lock things down - probably more than absolutely necessary.

    Although we can force things and go beyond those limits - and even have long term success much of the time, there are times that the design, over-designed as they are, isn't enough. Like with AW blowing VRM's and other power components upstream feeding the OC'd circuits failing.

    I've blown or used up plenty of hardware while learning how far to push things, and found over time there's a practical limit to the value of OC'ing past a certain level - the law of diminishing returns - what is now the "daily driver" level.

    Now a simple undervolt, fan curve tuning, and XTU / MSI AB / TS is enough to get 99% of the performance, which is enough for me long term.

    Glad to see someone have fun with it. :)
     
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  9. gt83vr6reHelp

    gt83vr6reHelp Notebook Consultant

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    Yeah definitely don't wanna blow this thing up haha. Putting some finishing touches on 3200mhz. Weird that jedec trefi for 3200(12480) gives me lower aida4 read/copy scores than jedec trefi for 3100(12094). still gotta try 65535 as well. I'm wondering if there is a point where too high of refi has a negative impact. time to research. Maybe I can drop the trfc to 327 to improve a bit more. I swear, i'm pretty much a motorhead but i don't like getting my hands dirty so i chose computers haha.



    Aida64 results 4.2ghz on core & cache @1.225v w/ DDR4 clocked at 3200 CR-1 16-15-15-35-374 @1.20v

    3200 w/ 12,094 trefi VS 3200 w/ 12,480 trefi
    read 46,097 MB/s 45,347 MB/s
    write 49,506 MB/s 49,704 MB/s
    copy 45,414 MB/s 45,351 MB/s
    latency 43.8 NS 43.7 NS


    Looks like somewhere between 12,904 and 12,480 is the sweet spot for now.

    An of course, obligatory XTU benchmark. https://hwbot.org/submission/4162965
     
    Last edited: May 26, 2019
  10. gt83vr6reHelp

    gt83vr6reHelp Notebook Consultant

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    @hmscott @Falkentyne Riddle me this, CPU-ID is showing that i have 2 desktop gtx 1070 gpus(1920 shaders, 150tdp and desktop sku #). Mobile cards are supposed to have 2048 shaders and 120tdp. Did nvidia bin out their lower end desktop 1070 gpu dies to MSI or something? There has to be a way for me to unlock the extra 30 watts per card without modding hardware. Must have all the watts....

    upload_2019-5-26_15-36-35.png
     
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