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  1. #1
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    Exclamation Asus Rampage III Extreme 24GB Memory Bandwidth Issue

    Hi,
    I'm not very experienced in overclocking / MB settings so I hope somebody can shed light to the issue I'm having.

    I've been using Asus Rampage III Extreme MB, with i7 980XI and had 12GB RAM running at 1600Mhz for years without any issues whatsoever.

    Recently I got a pretty good deal on Kingston KHX1600C9D3T1BK6/24GX 24GB 1600MHz DDR3 Non-ECC CL9 DIMM (Kit of 6) XMP T1 Black Series and installed them. I am moving to my new Rampage IV system and wanted to give my kid what I thought a better system really.


    At first system didn't recognize 24GB immediately, then I managed to have the system see all 24GB fine @1600Mhz, using XMP profile.
    And it's running rock solid now.

    My issue is the bandwidth....
    CPU-Z reports as individual Kingston HyperX KHX1600C9D3/4GX modules with DRAM frequency at 800Mhz but the bandwidth is PC3-10700 (667Mhz) instead of PC3-12800 (800Mhz).
    I am attaching screenshots as well.

    Click image for larger version. 

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    I would really appreciate if you can help me setting the correct bandwidth in bios settings.
    Thank you.

  2. #2
    ROG 師傅 Array Arne Saknussemm PC Specs
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    CPUz is just reporting the base spec for the kit on the SPD tab

    The memory tab shows what the Kit is running at...i.e. here it's your rated specs...800x2 1600

    I have the same here with a 3200MHz kit....SPD says 1066...it's running at 1600

  3. #3
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    Quote Originally Posted by Arne Saknussemm View Post
    CPUz is just reporting the base spec for the kit on the SPD tab

    The memory tab shows what the Kit is running at...i.e. here it's your rated specs...800x2 1600

    I have the same here with a 3200MHz kit....SPD says 1066...it's running at 1600
    Thank you Arne for your ultra fast reply.
    I guess all is OK.

    Is there any other utility like CPU-Z showing current real values?

  4. #4
    ROG 師傅 Array Arne Saknussemm PC Specs
    Arne Saknussemm PC Specs
    Laptop (Model)Laptop?...No way! (Model?...Jun Amaki...yes way!)
    MotherboardROG ZENITH EXTREME
    ProcessorTHREADRIPPER 1920X
    Memory (part number)F4-3200C14Q-32GVK
    Graphics Card #1GTX Titan X
    Graphics Card #2SLI is dead to me
    Graphics Card #3Tri SLI is even dead to Nvidia
    Graphics Card #4Quad SLI is dead to everybody especially my credit card
    Sound CardXonar Essence STX
    MonitorASUS ROG Swift PG279Q
    Storage #1Samsung 950 PRO
    Storage #22x OCZ VERTEX 3/2x WD Caviar Black 500GB / 2x WD RED 2TB
    CPU CoolerCustom Loop: Dual D5s, Dual Alphacool Monsta 480s, XSPC Raystorm Neo TR4, EK TitanX WaterBlock
    CaseNope!...Phobya Bench...let it all hang out man!
    Power SupplySeasonic SS-1200XP3
    Keyboard Logitech G810 or Fender Rhodes Electric Piano (MKI 73)
    Mouse G502 or Speedy Gonzalez...not Mickey...don't do Disney!
    Headset ...firmly on neck
    Mouse Pad Mouse don't got his own pad man...lives with me
    Headset/Speakers Edifier Spinnaker...or you mean the speakers in my head...man too many voices to name them all
    OS Win XP, 7, 8, 8.1 and Windows 10 Spyware Edition
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    Arne Saknussemm's Avatar
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    Nah, you're welcome...

    Most of these monitoring tools will show you your current RAM frequency...HWiNFO64 for example... AIDA64...

  5. #5
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    Much appreciated Arne, I have AIDA64, got HWinfo64 as well, both verified as you indicated.
    I can now move on to make my new system with Rampage IV and NVMe, etc. with peace of mind.
    I build a system every 5-7+yrs and I opt for premium components as I can so it lasts a bit longer, so a bit less hassle for me in the end.

    My son had eyes on mine for some time now, feeling the pressure, if you know what I mean
    Now I can go on and give it to him without any second thoughts about this memory bandwidth.

    Have a great weekend.

  6. #6
    ROG 師傅 Array Arne Saknussemm PC Specs
    Arne Saknussemm PC Specs
    Laptop (Model)Laptop?...No way! (Model?...Jun Amaki...yes way!)
    MotherboardROG ZENITH EXTREME
    ProcessorTHREADRIPPER 1920X
    Memory (part number)F4-3200C14Q-32GVK
    Graphics Card #1GTX Titan X
    Graphics Card #2SLI is dead to me
    Graphics Card #3Tri SLI is even dead to Nvidia
    Graphics Card #4Quad SLI is dead to everybody especially my credit card
    Sound CardXonar Essence STX
    MonitorASUS ROG Swift PG279Q
    Storage #1Samsung 950 PRO
    Storage #22x OCZ VERTEX 3/2x WD Caviar Black 500GB / 2x WD RED 2TB
    CPU CoolerCustom Loop: Dual D5s, Dual Alphacool Monsta 480s, XSPC Raystorm Neo TR4, EK TitanX WaterBlock
    CaseNope!...Phobya Bench...let it all hang out man!
    Power SupplySeasonic SS-1200XP3
    Keyboard Logitech G810 or Fender Rhodes Electric Piano (MKI 73)
    Mouse G502 or Speedy Gonzalez...not Mickey...don't do Disney!
    Headset ...firmly on neck
    Mouse Pad Mouse don't got his own pad man...lives with me
    Headset/Speakers Edifier Spinnaker...or you mean the speakers in my head...man too many voices to name them all
    OS Win XP, 7, 8, 8.1 and Windows 10 Spyware Edition
    Network Router56k modem
    Accessory #1 Umm...nice tie?
    Accessory #2 Err...belt?
    Accessory #3 3 accessories?! I'm not a girl!!
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    Quote Originally Posted by frustrata View Post
    My son had eyes on mine for some time now, feeling the pressure, if you know what I mean
    Haha he'll enjoy playing around on that for sure...good luck with the next build!


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