EVGA

X58 FTW3 12GB installed, 8GB seen

Author
Post
Essentials Only Full Version
Fire Raven
New Member
  • Total Posts : 15
  • Reward points : 0
  • Joined: 2010/08/17 17:36:20
  • Status: offline
  • Ribbons : 0
2015/06/23 22:37:25 (permalink)
I had 6GB (2*3) installed. I took out these DIMMs and replaced them with 4GB DIMMs for a total of 12GB. When I powered up again, the BIOS only saw 8GB. It seems there is an issue with the middle DIMM slot. In XP32, Speccy did find all 3 DIMMs and reported 12GB physical RAM. (Yes, I know XP32 can't actually use 12GB.) So I know the middle slot is not dead. Going into Linux x64, only 8GB is seen. (I have not tried the mem kernel parameter.) Does something need to be done for >8GB to be usable?
#1

11 Replies Related Threads
    Gomez99
    CLASSIFIED Member
    • Total Posts : 2637
    • Reward points : 0
    • Joined: 2013/03/28 16:53:08
    • Location: L.A.
    • Status: offline
    • Ribbons : 14
    Re: X58 FTW3 12GB installed, 8GB seen 2015/06/26 00:32:28 (permalink)
    Ensure that you have the corrects timings, frequency, and voltage set in the BIOS. 


    #2
    RainStryke
    The Advocate
    • Total Posts : 10616
    • Reward points : 0
    • Joined: 2007/07/19 19:26:55
    • Location: Kansas
    • Status: offline
    • Ribbons : 60
    Re: X58 FTW3 12GB installed, 8GB seen 2015/06/26 16:27:43 (permalink)
    Also make sure you have the latest BIOS revision.

    Intel i9 10900K
    MSI MEG Z490 ACE
    ASUS TUF RTX 3090
    32GB G.Skill Trident Z Royal 4000MHz CL18
    SuperFlower Platinum SE 1200w
    Samsung EVO 970 1TB and Crucial P5 1TB
    Cougar Vortex CF-V12HPB x9
    #3
    Fire Raven
    New Member
    • Total Posts : 15
    • Reward points : 0
    • Joined: 2010/08/17 17:36:20
    • Status: offline
    • Ribbons : 0
    Re: X58 FTW3 12GB installed, 8GB seen 2015/06/27 21:56:37 (permalink)
    The RAM is DDR3 1600 1.5V 8-8-8-24. The only thing I needed to correct was the T-RAS (auto had it at 20).
    BIOS is 08/25/2011.
    I still have only 8GB seen.
    #4
    rjohnson11
    EVGA Forum Moderator
    • Total Posts : 84953
    • Reward points : 0
    • Joined: 2004/10/05 12:44:35
    • Location: Netherlands
    • Status: offline
    • Ribbons : 86
    Re: X58 FTW3 12GB installed, 8GB seen 2015/06/28 02:36:43 (permalink)
    Ram model and make please?

    AMD Ryzen 9 7950X,  Corsair Mp700 Pro M.2, 64GB Corsair Dominator Titanium DDR5  X670E Steel Legend, MSI RTX 4090 Associate Code: H5U80QBH6BH0AXF. I am NOT an employee of EVGA

    #5
    rjohnson11
    EVGA Forum Moderator
    • Total Posts : 84953
    • Reward points : 0
    • Joined: 2004/10/05 12:44:35
    • Location: Netherlands
    • Status: offline
    • Ribbons : 86
    Re: X58 FTW3 12GB installed, 8GB seen 2015/06/28 02:46:36 (permalink)
    Try some of the suggestions used in this old guide of mine:
     
    http://forums.evga.com/FindPost/479626

    AMD Ryzen 9 7950X,  Corsair Mp700 Pro M.2, 64GB Corsair Dominator Titanium DDR5  X670E Steel Legend, MSI RTX 4090 Associate Code: H5U80QBH6BH0AXF. I am NOT an employee of EVGA

    #6
    Fire Raven
    New Member
    • Total Posts : 15
    • Reward points : 0
    • Joined: 2010/08/17 17:36:20
    • Status: offline
    • Ribbons : 0
    Re: X58 FTW3 12GB installed, 8GB seen 2015/06/28 09:48:00 (permalink)
    Crucial BLT3KIT4G3D1608DT2TXRG
    http://www.newegg.com/Product/Product.aspx?Item=N82E16820148523
     
    I tried the memory settings suggested by that guide. RAM seen was then 4GB.
    #7
    junior.tan
    New Member
    • Total Posts : 10
    • Reward points : 0
    • Joined: 2010/06/16 03:22:24
    • Location: Singapore
    • Status: offline
    • Ribbons : 0
    Re: X58 FTW3 12GB installed, 8GB seen 2015/07/11 12:23:20 (permalink)
    BUMP: I am having these issue too! And getting 3.9 usable when tried solutions found around the net.



    EVGA x58 Micro
    i7-930
    Kingston HyperX 12GB Kit (3x4GB Modules) 1600MHz DDR3 DIMM Desktop Memory (KHX1600C9D3K3/12GX)
    Windows 7 64Bit
    #8
    HeavyHemi
    Omnipotent Enthusiast
    • Total Posts : 13887
    • Reward points : 0
    • Joined: 2008/11/28 20:31:42
    • Location: Western Washington
    • Status: offline
    • Ribbons : 135
    Re: X58 FTW3 12GB installed, 8GB seen 2015/07/11 14:56:33 (permalink)
    junior.tan
    BUMP: I am having these issue too! And getting 3.9 usable when tried solutions found around the net.



    EVGA x58 Micro
    i7-930
    Kingston HyperX 12GB Kit (3x4GB Modules) 1600MHz DDR3 DIMM Desktop Memory (KHX1600C9D3K3/12GX)
    Windows 7 64Bit

    What voltage and timing are you running them at? According the the data sheet....
    DDR3-1600 at a low latency timing of 9-9-9-27 at 1.65V.
    or JEDEC standard latency DDR3-1600 timing of 11-11-11 at 1.5V
     
    Just for testing, try running at 10-10-10-27 at 1.65v.
    post edited by HeavyHemi - 2015/07/11 15:24:50

    EVGA X99 FTWK / i7 6850K @ 4.5ghz / RTX 3080Ti FTW Ultra / 32GB Corsair LPX 3600mhz / Samsung 850Pro 256GB / Be Quiet BN516 Straight Power 12-1000w 80 Plus Platinum / Window 10 Pro
     
    #9
    junior.tan
    New Member
    • Total Posts : 10
    • Reward points : 0
    • Joined: 2010/06/16 03:22:24
    • Location: Singapore
    • Status: offline
    • Ribbons : 0
    Re: X58 FTW3 12GB installed, 8GB seen 2015/07/12 07:12:01 (permalink)
    HeavyHemi
     
    What voltage and timing are you running them at? According the the data sheet....
    DDR3-1600 at a low latency timing of 9-9-9-27 at 1.65V.
    or JEDEC standard latency DDR3-1600 timing of 11-11-11 at 1.5V
     
    Just for testing, try running at 10-10-10-27 at 1.65v.




    I tried both 9-9-9 and 11-11-11 and it doesn't work.
     
    Also tried setting my TRL to +2 according to rjohnson11
     
    Here is my current BIOS settings:







    post edited by junior.tan - 2015/07/12 07:19:24
    #10
    junior.tan
    New Member
    • Total Posts : 10
    • Reward points : 0
    • Joined: 2010/06/16 03:22:24
    • Location: Singapore
    • Status: offline
    • Ribbons : 0
    Re: X58 FTW3 12GB installed, 8GB seen 2015/07/25 06:10:13 (permalink)
    BUMP
    #11
    Shockjockey
    CLASSIFIED Member
    • Total Posts : 2256
    • Reward points : 0
    • Joined: 2006/11/29 14:24:02
    • Location: OHIO
    • Status: offline
    • Ribbons : 18
    Re: X58 FTW3 12GB installed, 8GB seen 2015/07/25 07:49:45 (permalink)
    Try matching up your target cpu frequency with your cpu uncore.
     You also need to raise VTT Start with 175mv. Mine takes 250 to be stable with 12 gigs.
    post edited by Shockjockey - 2015/07/25 07:56:45

    Asus Sabertooth x99
    5930k (4.5ghz)
    16gb Corsair DDR4 (3000)
    EVGA 1000w psu
    Zotac 980ti x 2
    Samsung 850 pro 500 SSD
    HPLP3065 30in Monitor 2560x1600
    #12
    Jump to:
  • Back to Mobile