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Thread: Q9550-XMS2 1066-UD3R OC help




  1. #1
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    Default Q9550-XMS2 1066-UD3R OC help

    I have a q9550 E0, the newer corsair XMS2 (8500C5C G) 2 x 2 1066 RAM and a Gigabyte Ud3r currently at 3.65Ghz with 1.28125 vcore and everything else auto. the RAM timings are stock 5-6-6-18 and is at 2.1v with the multiplier at 2.40B making the RAM 1032Mhz as close to 1066Mhz as possible. I know for anything more I need to underclock the RAM to 2.00D. I want to get to 4Ghz but know to change more settings like timings and other voltages. what settings should I change to get say... 3.83ghz. I dont really know how to pass where im at stably.
    Thanks <!-- / message -->

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Q9550-XMS2 1066-UD3R OC help

    PLEASE Set your own Vtt and PLL, auto gives way to much.

    For 3.825 you can try 450 FSB and try 2.40B ram multi for 1080. But what you shold do first is underclock the ram until you find where you want to keep your CPU. Then worry about the ram

    But please do set your own voltage, especially Vtt (CPU Termination) and PLL, and for 4Gb of ram you likely need 1.20-1.24 MCH Core voltage as well.

  3. #3
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    Default Re: Q9550-XMS2 1066-UD3R OC help

    ok, what would be a good vcore for 3.825.. Im hoping my 1.28125 is enough. and I heard if I manually set the PLL to 1.5v it helps. my termination is already 1.2v. one more thing, does the ram need any type of tweaking? because I have no idea, besides multiplier, how to adjust timings right.
    Thanks

  4. #4
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    Default Re: Q9550-XMS2 1066-UD3R OC help

    Here's one of my Templates for 3.8GHz. May need to change your ram standard timing control to 5 5 5 18

    Code:
    MB Intelligent Tweaker(M.I.T.) 
    Robust Graphics Booster ...............:Fast 
    CPU Clock Ratio ...........................:8 X
    Fine CPU Clock Ratio.....................:+0.5
    CPU Frequency .............................:3.8GHz (450x8.5)
     
    Advanced Clock Control                   Press Enter 
    CPU Host Clock Control..................:Enabled
    CPU Host Frequency (Mhz) ............:450 
    PCI Express Frequency (Mhz) ........:100 
    C.I.A.2 .................................:Disabled 
     
    CPU Clock Drive..........................:800mV 
    PCI Express Clock Drive...............:900mV 
    CPU Clock Skew (ps)...................:0ps 
    MCH Clock Skew (ps)...................:0ps 
     
    DRAM Performance Control 
    Performance Enhance...................:Standard
    Extreme Memory Profile (X.M.P.).....:Disabled 
    (G)MCH Frequency Latch...............:Auto 
    System Memory Multiplier ..............2.40B 
    Memory Frequency (Mhz) ....1066....:1080
    DRAM Timing Selectable ................:Manual 
     
    Standard Timing Control 
    CAS Latency Time.............5........5
    tRCD ...............................7........5
    tRP'..................................7........5
    tRAS...............................24.......15
     
    Advanced Timing Control 
    tRRD.......................4.................4
    tWTR......................4..................4
    tWR.........................8.................6
    tRFC........................68...............54
    tRTP.........................4................4
    Command Rate (CMD) .......0........2
     
    Driving Strength Profiles 
    Driving Strength ........................... OC-1200
     
    Channel A 
    Static tRead Value...............8........:8  
    tRD Phase0 Adjustment.......0.......:Auto
    tRD Phase1 Adjustment.......0.......:Auto
    tRD Phase2 Adjustment ......0.......:Auto
    tRD Phase3 Adjustment.......0.......:Auto
    Trd2rd(Different Rank)...........8.......:Auto
    Twr2wr(Different Rank)..........8.......:Auto
    Twr2rd(Different Rank)...........7......:Auto
    Trd2wr(Same/Diff Rank).........9......:Auto
    Dimm1 Clock Skew Control...........:Auto
    Dimm2 Clock Skew Control...........:Auto
     
    Channel B 
    Static tRead Value...............8........:8  
    tRD Phase0 Adjustment........1.......:Auto 
    tRD Phase1 Adjustment....... 0.......:Auto
    tRD Phase2 Adjustment .......0.......:Auto
    tRD Phase3 Adjustment........0.......:Auto
    Trd2rd(Different Rank).......... .8.......:Auto
    Twr2wr(Different Rank).......... 8.......:Auto
    Twr2rd(Different Rank)........... 7......:Auto
    Trd2wr(Same/Diff Rank)..........9......:Auto
    Dimm1 Clock Skew Control............:Auto
    Dimm2 Clock Skew Control............:Auto
     
    Motherboard Voltage Control 
    Voltage Type.………... Manual 
    CPU
    Load Line Calibration......................:Disabled
    CPU Vcore….…….1.25000V...........:1.26875
    CPU Termination…..... 1.200V*........:1.200V
    CPU PLL……………….1.500V*.......: 1.500V
    CPU Referennce.……...0.760V*.......: Auto
     
    MCH/ICH 
    MCH Core……………...1.100V.........:1.280V
    MCH Reference….…….0.760V.........;Auto 
    MCH/DRAM Ref.…......0.900V..........:Auto 
    ICH I/O…………….....1.500V............:1.570V
    ICH Core…………...…1.100V............:1.100V
     
    DRAM 
    DRAM Voltage ……....1.800V..........:2.120V
    DRAM Termination .…0.900V...........:Auto 
    Channel A Reference 0.900V............:Auto
    Channel B Reference 0.900V............:Auto
     
    Advanced Settings    
    Limit CPUID Max. to 3.....................: Disabled    
    No-Execute Memory Protect.................: Enabled  
    CPU Enhanced Halt (C1E)...................: Disabled    
    C2/C2E State Support......................: Disabled    
    x C4/C4E State Support....................: Disabled    
    CPU Thermal Monitor 2(TM2) ...............: Enabled   
    CPU EIST Function.........................: Disabled    
    Virtualization Technology.................: Disabled

  5. #5
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    Default Re: Q9550-XMS2 1066-UD3R OC help

    Thanks Alot, Ill try that when I get a chance

  6. #6
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    Default Re: Q9550-XMS2 1066-UD3R OC help

    As conners Says, your RAM is spec'd at 5-5-5-15, not 5-6-6-18. I have identical RAM and can confirm those timings at 2.1V.

    My particular XMS2 will handle up to DDR-1100 OK but much above that is a fail. The XMS range of RAM is usually binned pretty close to its rated speeds and doesn't have that much head room in it. One reason why it's a reasonable price.

    The template Connors has given is good. You may need to use diferent vcore and VTT (CPU Termination) as each CPU is different, but those settings are a nice place to work from indeed.
    Coolermaster CM 690 II advance Case
    Corsair HX750 (CWT, 91%(80+ Gold rated @230V) single 62A 12V rail
    P55A-UD4 v2.0 @ F14
    Core i5 760 @ 20 x 201, 4.02GHz
    TRUE Black with a single Noctua NF-P12 pumping out 55 CFM @ 19db .
    2 x 2GB Mushkin Ridgeback (996902), @ 7-10-8-27, 2010-DDR, 1.66v
    2 x Gigabyte GTX 460 1024MB in SLI (Pre OC'd to 715MHz core and 1800MHz VRAM) @ 850 Core / 4100 Mem.
    Intel X25-M Boot Drive (OS and Programs) 200MB/s Read & 90MB/s Write
    Corsair X32 200MB/s Read & 100MB/s Write
    WD Caviar Blue 640GB C (Steam, Games, Storage, Temp Files & Folders, etc)
    Samsung F3 500GB Backup/Images
    Noctua 1300RPM 19dB case fan (rear extraction)
    3 x 140 MM Coolermaster LED fans (one front intake, one top extraction, one side intake)
    Dell Ultra Sharp 2209WAf E-IPS @ 1680x1050

  7. #7
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    Default Re: Q9550-XMS2 1066-UD3R OC help

    no its this RAM Newegg.com - CORSAIR XMS2 4GB &#40;2 x 2GB&#41; 240-Pin DDR2 SDRAM DDR2 1066 &#40;PC2 8500&#41; Desktop Memory Model TWIN2X4096-8500C5C G - Desktop Memory
    The timings are a bit different and has better cooling.

    anyways, I tried that template and it failed, Im a 3.65 with 1.25vcore 1.22termination 1.50PLL 1.2MCH core RAM 2.1v and everything else auto with the ram at 1032MHz stable. Ill probably stay there. I got into windows at 3.83ghz but failed prime in 10-15 mins

  8. #8
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    Default Re: Q9550-XMS2 1066-UD3R OC help

    put cpu term back to 1.2 then manually change cpu and MCH reference voltages to .760v. Then go back to CPU Term and set back to 1.22. and give it a whirl on testing.

    After that you may need to increase vcore, cpu term, mch term and or mch voltage. Change only one at a time then test or I can walk you through the changes.

    Run IBT then P95 small FFT and see it goes.

    Oh and set your ram to whats on the side of the stick. (5-6-6-18 @2.1V) You may need to change some of your advanced timings. Can you get us a screenie of memset?
    Last edited by Conners; 08-20-2009 at 10:14 PM.

  9. #9
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Q9550-XMS2 1066-UD3R OC help

    Let us know if you need more help by me, looks like you have plenty of support here already though.

    Good luck tweaking and like I said if you need my help let me know

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