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Thread: GA-EP45T-DS3R - looking for overclock advice




  1. #1
    Join Date
    Oct 2008
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    28

    Default GA-EP45T-DS3R - looking for overclock advice

    Hi - I've been trying to get a little more out of my ageing system lately but after hours of attempts I always run into instability. I've managed to keep it 100% stable for two months now with the settings below, at what seems to be the bare minimum. Trying to up anything causes the occasional hard-lock (doesn't even reach BSOD) anywhere from once a day to frequently.

    I'm looking to increase my RAM speed and/or tighten the timings, and perhaps add a light CPU overclock. Any advice that could be offered would be appreciated,

    Cheers.

    Current specs:
    Code:
    GA-EP45T-DS3R BIOS F4c
    Q9400 @ 2.66GHz
    4GB Corsair RAM, 4 DIMMs:
       - 2x1GB CM3X1G1600C9DHX
       - 2x1GB CM3X1G1600C7DHX
    PowerColor Radeon HD 6850
    CoolerMaster eXtreme Power Plus 550W
    BIOS settings:
    Code:
    MB Intelligent Tweaker(M.I.T.)Robust Graphics Booster .............: [ Auto ]
    CPU Clock Ratio .....................: 8 X  
    Fine CPU Clock Ratio.................: 0  
    CPU Frequency .......................: 2.66GHz (333x8)
    
    
    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control...............: [ Enabled ]
    CPU Host Frequency (Mhz) ............: 333  
    PCI Express Frequency (Mhz) .........: 100 
    C.I.A.2 .............................: [ Disabled ]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive......................: [ 800 mV ]
    PCI Express Clock Drive..............: [ 900mV ]
    CPU Clock Skew (ps)..................: [ 0ps ]
    MCH Clock Skew (ps)..................: [ 0ps ]
    
    
    DRAM Performance Control
    Performance Enhance..................: [ Standard ]
    (G)MCH Frequency Latch...............: [ 333 MHz ]
    System Memory Multiplier ............: 3.20B  
    Memory Frequency (Mhz) ........1066..: 1066
    DRAM Timing Selectable ..............: [ Manual ]
    
    
    Standard Timing Control
    CAS Latency Time.....................: 9 
    tRCD ................................: 9 
    tRP'.................................: 9 
    tRAS.................................: 24 
    
    
    Advanced Timing Control
    tRRD..............................4..: [ Auto ]
    tWTR..............................4..: [ Auto ]
    tWR...............................8..: [ Auto ]
    tRFC.............................60..: [ Auto ] 
    tRTP..............................4..: [ Auto ]
    Command Rate (CMD) ...............0..: [ Auto ]
    
    
    
    
    Channel A
    Static tRead Value...................: 9
    tRD Phase0 Adjustment................: 1 [ AUTO ]
    tRD Phase1 Adjustment................: 1 [ AUTO ]
    tRD Phase2 Adjustment ...............: 1 [ AUTO ]
    tRD Phase3 Adjustment................: 0 [ AUTO ]
    Trd2rd(Different Rank)...............: 9 [ AUTO ]
    Twr2wr(Different Rank)...............: 7 [ AUTO ]
    Twr2rd(Different Rank)...............: 7 [ AUTO ]
    Trd2wr(Same/Diff Rank)............. .: 10 [ AUTO ]
    
    
    Channel B
    Static tRead Value...................: 9
    tRD Phase0 Adjustment................: 0 [ AUTO ]
    tRD Phase1 Adjustment................: 1 [ AUTO ]
    tRD Phase2 Adjustment ...............: 1 [ AUTO ]
    tRD Phase3 Adjustment................: 0 [ AUTO ]
    Trd2rd(Different Rank)...............: 9 [ AUTO ]
    Twr2wr(Different Rank)...............: 7 [ AUTO ]
    Twr2rd(Different Rank)...............: 7 [ AUTO ]
    Trd2wr(Same/Diff Rank)...............: 10 [ AUTO ]
    
    
    
    
    Motherboard Voltage Control
    Voltage Type...............
    CPU
    CPU Vcore............................: 1.23750V [ 1.23750V ]
    CPU Termination….....................: 1.200V   [ 1.200V ]
    CPU PLL..............................: 1.500V   [ 1.500V ]
    CPU Reference........................: 0.760V   [ 0.760V ]
    
    
    
    
    MCH/ICH
    MCH Core.............................: 1.100V   [ 1.200V ]
    MCH Reference........................: 0.760V   [ 0.760V ]
    MCH/DRAM Ref.........................: 0.750V   [ 0.730V ]
    ICH I/O......................….......: 1.500V   [ 1.500V ]
    
    
    
    
    DRAM
    DRAM Voltage ........................: 1.500V   [ 1.700V ]
    DRAM Termination ....................: 0.750V   [ AUTO ]
    Ch-A DATA VRef.......................: 0.750V   [ AUTO ]
    Ch-B DATA VRef.......................: 0.750V   [ AUTO ]
    Ch-A Address VRef....................: 0.750V   [ AUTO ]
    Ch-B Address VRef....................: 0.750V   [ AUTO ]
    
    
    Advanced Settings
    Limit CPUID Max. to 3...............: [ DISABLED ]
    No-Execute Memory Protect...........: [ ENABLED ]
    Load-Line Calibration...............: [ DISABLED ]
    CPU Enhanced Halt (C1E).............: [ DISABLED ] 
    CPU Thermal Monitor 2(TM2) .........: [ ENABLED ]
    CPU EIST Function...................: [ DISABLED ] 
    Virtualization Technology...........: [ ENABLED ] 
    
    
    USB Legacy Support..................: [ DISABLED ]

  2. #2
    Chike is offline Senior Member
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    Default Re: GA-EP45T-DS3R - looking for overclock advice

    Is this your memory, with 1.8v for DDR-1600? http://multi.gnt.lt/Pages/brochures/...G1600C9DHX.pdf
    To run ram at DDR-1600, set DRAM Voltage as specified on the sticker, SMM 4.00B, and try increasing MCH Core up to 1.28v.
    Do you have an aftermarket CPU cooler or the stock cooler?

  3. #3
    Join Date
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    28

    Default Re: GA-EP45T-DS3R - looking for overclock advice

    Quote Originally Posted by Chike View Post
    Is this your memory, with 1.8v for DDR-1600? http://multi.gnt.lt/Pages/brochures/...G1600C9DHX.pdf
    To run ram at DDR-1600, set DRAM Voltage as specified on the sticker, SMM 4.00B, and try increasing MCH Core up to 1.28v.
    Do you have an aftermarket CPU cooler or the stock cooler?
    That's one of them, two 1GB sticks of TW3X2X1600C9DHX, and another two 1GB sticks of TW3X2G1600C7DHX.
    I'm not aiming too high with this, I'd be happy with just 1333 or even 7-7-7-20 @ 1066. I tried those settings anyway, and got stuck in a boot loop.

    The CPU cooler is stock. 30ºC idle and 68ºC under load (Prime95) with my current settings.

  4. #4
    Chike is offline Senior Member
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    Default Re: GA-EP45T-DS3R - looking for overclock advice

    We will have to go with the higher timings.
    What is the memory layout? From my experiments it is preffered to have each kit in it's own channel. One kit at slots 1 & 2, and the other at slots 3 & 4.
    Which settings have you tried, those I posted or the lower timings?

  5. #5
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    Default Re: GA-EP45T-DS3R - looking for overclock advice

    Quote Originally Posted by Chike View Post
    We will have to go with the higher timings.
    What is the memory layout? From my experiments it is preffered to have each kit in it's own channel. One kit at slots 1 & 2, and the other at slots 3 & 4.
    Which settings have you tried, those I posted or the lower timings?
    In the mobo manual, channel 0 is listed as 1 + 2, and channel 1 is 3 + 4 - DDR3 slots being numbered from left to right.
    Right underneath that, it says to place matching RAM in the same coloured socket, which is 1+3 and 2+4 -- this is how they're placed now.
    That's got me completely confused now - should I switch them around?

    I tried the settings you posted above half hour ago, which gave me the boot loop. I also ran 1333 at 9-9-9-24 for a week or so - which booted, but gave me a BSOD every day or two, though most of my voltages were still Auto at that point. I'm now on the settings quoted in the OP which have been 100% stable for a couple of months.

  6. #6
    Chike is offline Senior Member
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    Default Re: GA-EP45T-DS3R - looking for overclock advice

    Use 1 + 3 or 2 + 4 if you are using 2 sticks. When mixing rams it's better to have each in different channel, that's what I've found.
    I am wondering about the MCH Dram ref, which voltage does it scale with? DRAM Voltage, VTT, or MCH Core?
    I'd go and load optimized defaults and change only the nesessary values, SMM, timings, MCH Core and DRAM Voltage.
    Code:
    System Memory Multiplier ............: 4.00B  
    Memory Frequency (Mhz) ........1066..: 1333
    DRAM Timing Selectable ..............: [ Manual ]
    
    
    Standard Timing Control
    CAS Latency Time.....................: 9 / 8
    tRCD ................................: 9 / 8
    tRP'.................................: 9 / 8
    tRAS.................................: 24 / 24
    
    MCH/ICH
    MCH Core.............................: 1.100V   [ 1.2-1.28 ]
    
    DRAM
    DRAM Voltage ........................: 1.500V   [ 1.800V ]

  7. #7
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    Default Re: GA-EP45T-DS3R - looking for overclock advice

    Quote Originally Posted by Chike View Post
    Use 1 + 3 or 2 + 4 if you are using 2 sticks. When mixing rams it's better to have each in different channel, that's what I've found.
    I am wondering about the MCH Dram ref, which voltage does it scale with? DRAM Voltage, VTT, or MCH Core?
    I'd go and load optimized defaults and change only the nesessary values, SMM, timings, MCH Core and DRAM Voltage.
    Code:
    System Memory Multiplier ............: 4.00B  
    Memory Frequency (Mhz) ........1066..: 1333
    DRAM Timing Selectable ..............: [ Manual ]
    
    
    Standard Timing Control
    CAS Latency Time.....................: 9 / 8
    tRCD ................................: 9 / 8
    tRP'.................................: 9 / 8
    tRAS.................................: 24 / 24
    
    MCH/ICH
    MCH Core.............................: 1.100V   [ 1.2-1.28 ] (i went with 1.22)
    
    DRAM
    DRAM Voltage ........................: 1.500V   [ 1.800V ]
    Optimized defaults + the quoted settings boots and runs fine so far.
    I ran MaxxMem2 a few times, then switched the kits into their own channels and tried again, and the results were pretty much identical. I'm not sure if it's important at all, but the C9DHX kit ended up in channel 0.
    ~7700MB/s copy, ~7350MB/s read, ~6980MB/s write, 7.19GB/s, 70.3ns latency.

    Memory timings also auto'd to different values, same for both channels:
    Code:
    Static tRead Value...................: 7
    tRD Phase0 Adjustment................: 0 [ AUTO ]
    tRD Phase1 Adjustment................: 0 [ AUTO ]
    tRD Phase2 Adjustment ...............: 0 [ AUTO ]
    tRD Phase3 Adjustment................: 0 [ AUTO ]
    Trd2rd(Different Rank)...............: 9 [ AUTO ]
    Twr2wr(Different Rank)...............: 7 [ AUTO ]
    Twr2rd(Different Rank)...............: 8 [ AUTO ]
    Trd2wr(Same/Diff Rank)............. .: 9 [ AUTO ]

  8. #8
    Chike is offline Senior Member
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    Default Re: GA-EP45T-DS3R - looking for overclock advice

    Looks good so far for 333MHz FSB.Can you post a screen capture of MemSet main window? (Alt + PrintScreen to capture active window only).
    Were the temperatures you posted CPU temperatures or max core temperature?

    EDIT: What MCH Core did you set?
    Last edited by Chike; 07-28-2011 at 06:00 PM.

  9. #9
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    Default Re: GA-EP45T-DS3R - looking for overclock advice

    Quote Originally Posted by Chike View Post
    Looks good so far for 333MHz FSB.Can you post a screen capture of MemSet main window? (Alt + PrintScreen to capture active window only).
    Were the temperatures you posted CPU temperatures or max core temperature?

    EDIT: What MCH Core did you set?
    Those temps were from TMPIN1 on hardware monitor, max core temps were slightly higher. It went up to 72C on IntelBurnTest (Maximum).
    MCH core is on 1.22V.



    Quote Originally Posted by Chike View Post
    MCH Dram ref, which voltage does it scale with?
    It scaled with DRAM voltage.
    Last edited by bhaz; 07-30-2011 at 12:48 AM.

  10. #10
    Chike is offline Senior Member
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    Default Re: GA-EP45T-DS3R - looking for overclock advice

    Is Static tRead Value(Performance Level in MemSet) set to 7 manually or is this it's auto value?
    72c for IBT is not too high but it's high.
    We can try a slight overclock with stock vocore and memory at 1422, it's max for CL 8.
    Code:
    MB Intelligent Tweaker(M.I.T.
    )Robust Graphics Booster .............: [Auto]
    CPU Clock Ratio .....................: 8 X  
    Fine CPU Clock Ratio.................: 0  
    CPU Frequency .......................: 2.84GHz (356x8)
    
    
    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control...............: [Enabled]
    CPU Host Frequency (Mhz) ............: [356] 
    PCI Express Frequency (Mhz) .........: [100] 
    C.I.A.2 .............................: [Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive......................: [800 mV]
    PCI Express Clock Drive..............: [900mV]
    CPU Clock Skew (ps)..................: [0ps]
    MCH Clock Skew (ps)..................: [0ps]
    
    
    DRAM Performance Control
    Performance Enhance..................: [Standard]
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ............: [4.00B]
    Memory Frequency (Mhz) ........1066..: 1424
    DRAM Timing Selectable ..............: [Manual]
    
    Standard Timing Control
    CAS Latency Time.....................: 8 
    tRCD ................................: 8 
    tRP'.................................: 8 
    tRAS.................................: 24 
    
    Advanced Timing Control
    tRRD..............................4..: [Auto]
    tWTR..............................4..: [Auto]
    tWR...............................8..: [Auto]
    tRFC.............................60..: [Auto] 
    tRTP..............................4..: [Auto]
    Command Rate (CMD) ...............0..: [Auto]
    
    
    Channel A
    Static tRead Value...................: [7]
    tRD Phase0 Adjustment................: 0 [Auto]
    tRD Phase1 Adjustment................: 0 [Auto]
    tRD Phase2 Adjustment ...............: 0 [Auto]
    tRD Phase3 Adjustment................: 0 [Auto]
    Trd2rd(Different Rank)...............: 9 [Auto]
    Twr2wr(Different Rank)...............: 7 [Auto]
    Twr2rd(Different Rank)...............: 8 [Auto]
    Trd2wr(Same/Diff Rank)............. .: 9 [Auto]
    
    
    Channel B
    Static tRead Value...................: [7]
    tRD Phase0 Adjustment................: 0 [Auto]
    tRD Phase1 Adjustment................: 0 [Auto]
    tRD Phase2 Adjustment ...............: 0 [Auto]
    tRD Phase3 Adjustment................: 0 [Auto]
    Trd2rd(Different Rank)...............: 9 [Auto]
    Twr2wr(Different Rank)...............: 7 [Auto]
    Twr2rd(Different Rank)...............: 8 [Auto]
    Trd2wr(Same/Diff Rank)............. .: 9 [Auto]
    
    
    Motherboard Voltage Control
    Voltage Type...............
    CPU
    CPU Vcore............................: 1.23750V [Normal]
    CPU Termination….....................: 1.200V   [1.200V]
    CPU PLL..............................: 1.500V   [1.500V]
    CPU Reference........................: 0.760V   [Auto]
    
    
    MCH/ICH
    MCH Core.............................: 1.100V   [1.220V]
    MCH Reference........................: 0.760V   [Auto]
    MCH/DRAM Ref.........................: 0.750V   [Auto]
    ICH I/O......................….......: 1.500V   [1.500V]
    
    
    DRAM
    DRAM Voltage ........................: 1.500V   [1.8]
    DRAM Termination ....................: 0.750V   [Auto]
    Ch-A DATA VRef.......................: 0.750V   [Auto]
    Ch-B DATA VRef.......................: 0.750V   [Auto]
    Ch-A Address VRef....................: 0.750V   [Auto]
    Ch-B Address VRef....................: 0.750V   [Auto]
    I myself use IBT just as indication for (enough) vcore. Record IBT GFlops with 3072MB at stock, and see that it scale with the overclock (new clock/old clock shoud be close to new flops / old flops). 5-10 runs are sufficient, no need to run it for hours.
    Prime95 is more reliable to find instability. You can customize the blend test to run each FFT for only 10 minutes, to have more FFTs tested over a period of time, and/or use more memory, just run all your tests with the same values.
    Running the failed FFT size, may reproduce failure quickly and save a lot of time, record the failing FFT.

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