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Thread: GA-EP45C-UD3R & E8500 OC help




  1. #11
    Chike is offline Senior Member
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    As you can see in the SPD a single DIMM spec is only 1.5v but int the data sheet
    Tested together at 1333MHz, Vdimm =
    1.60V, at latency settings of 9-9-9-24

  2. #12
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    Ok, so I need to change it to 1.6v and those timings also? 9 9 9 24
    Would I need to change any other settings before running Prime95 again?

  3. #13
    Chike is offline Senior Member
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    Timngs depend on memory speed you are using(as seen on SPD). Depending on what multipliers options you have you can try higher memory speed.
    I myself leave all timings on auto, and just set lowest Static tRead Value possible.
    While you not set on FSB speed don't bother too much with memory tweaking, leave it to the end.

  4. #14
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    I agree with Chike.

    Because the Core 2 architecture is designed intentionally to minimise RAM bandwidth requirements, leaving RAM tweaking to last is a good idea. The tweaking of RAM timings can have a huge impact on stability (or instability) while only offering modest gains in performance compared to something like CPU speed.

    Saying that though, although an individual timing may have no visible performance effect, setting them all manually and tweaking them down in unison can bring a gain that may seem bigger than the sum of it's individual tweaks. YMMV on that though.

    Any time you play with RAM, make sure you have a backup of all your vital files. An incorrect RAM timing can lead to corruption and faulty data being written to disk. This can cause anything from a temporary crash to loosing precious data and sometimes corrupting an operating system.

    I always make an up to date back up before I change anything. I even make sure my archive is up to date before cleaning inside my rig. You never know, accidents may happen. I've dropped a hard drive plenty of times. Rarely is there damage, but there have been occasions where I've lost data due to clumsiness. It doesn't happen now that I'm more experienced though. Golden rule of physics "Lie it down flat, because one way or another it'll end up in that position any way".
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  5. #15
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    Ok, thanks for your help so far. I changed the dram voltage to 1.6v and left all the settings that Psycho101 posted:


    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster -------------- : [Auto]
    CPU Clock Ratio ---------------------- : [9x]
    Fine CPU Clock Ratio ----------------- : [0.0]
    CPU Frequency ---------------------: 3.87 (430x9)

    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control --------------- : [Enabled]
    CPU Host Frequency (Mhz) --------------: [430]
    PCI Express Frequency (Mhz) ---------- : [100]

    C.I.A.2 ------------------------------ : [Disabled]

    Advanced Clock Control ------- [Press Enter]
    CPU Clock Drive ---------------------- : [800mV] Don't alter these to 800/900,
    they should be at that by default.
    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 -------------- : [2.00D] Try 2.00B if unable to boot.
    Memory Frequency (Mhz) ---------------- : 860
    DRAM Timing Selectable ---------------- : [Manual]

    Standard Timing Control
    CAS Latency Time -------- 7 ---------- : [5]
    tRCD ------------------- 7 ---------- : [5]
    tRP --------------------- 7 ---------- : [5]
    tRAS ------------------- 20 ---------- : [18]

    Advanced Timing Control
    tRRD ------------------- 4 ---------- : [4]
    tWTR ------------------- 4 ---------- : [4]
    tWR --------------------- 8 ---------- : [8]
    tRFC ------------------- 60 ---------- : [68]
    tRTP ------------------- 4 ---------- : [4]
    Command Rate (CMD) ---------- 0 ---------- : [2]

    Channel A
    Static tRead Value --------------------- : [9]

    Channel B
    Static tRead Value --------------------- : [9]

    Motherboard Voltage Control
    CPU
    Voltage Types------------ Normal -------- Current -----
    Load-Line Calibration ----------------- : [Disabled]
    CPU Vcore --------------- 1.25000V ---- : [1.3V] NEVER use auto if OCing!

    CPU Termination --------- 1.200V ----- : [1.200V] Use the least possible to be stable
    NEVER use auto when OCing!
    CPU PLL ----------------- 1.500V ----- : [1.57V] NEVER use auto if OCing

    CPU Reference ----------- 0.760V ----- : [Auto]

    MCH/ICH
    MCH Core ---------------- 1.100V ------- : [1.2V] NEVER use auto when OCing!
    MCH Reference ----------- 0.760V ------- : [Auto]
    MCH/DRAM Ref ------------ 0.750V ------ : [Auto]
    ICH I/O ----------------- 1.500V ------- : [1.500V]
    ICH Core ---------------- 1.100V ------- : [Auto]
    DRAM
    DRAM Voltage ------------ 1.500V ------- : [1.6V]
    DRAM Termination -------- 0.750V ------- : [Auto]
    Channel A Reference ----- 0.750V ------- : [Auto]
    Channel B Reference ----- 0.750V ------- : [Auto]

    Advanced Settings
    Limit CPUID Max. to 3 ------------------ : [Disabled]
    No-Execute Memory Protect -------------- : [Disabled]
    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]

    Integrated Peripherals
    Legacy USB Storage Detect ------------- : [Disabled]
    It still runs stable and now even a little cooler.



    Im sorry to be such a noob but do you have any suggestions for getting to 4.0 or higher stable?

  6. #16
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    You're not a noob at all imo. Everyone has to learn. That's what makes us humans so awesome!

    As Chike correctly pointed out, use the correct voltage he suggested for your DDR3. Don't feel bad about posting the wrong link, there's no harm done.

    Getting to 4GHz sounds simpler than it is. It's a lot of trial and error is all. It should be possible though, and you being stable on 1.3V Vcore @ 3.8GHz is a good sign indeed. This means you have a nice amount of headroom for increasing it a little at the magic 4GHz mark.

    For 4GHz, first alter your FSB to the needed level, which is 444-445MHz, 445 looks nicer as that will definitely give a nice "4GHz displayed in Windows. After setting this, the second vital step is to adjust your RAM System Memory Multiplier to a value which keeps the RAm running at or slightly under its rated speed. For 445 FSB, if you can use a 3.0 multi then you'll run at 1335, which will probably be fine. If not, the next multi to try will be 2.66. Note that I don't have a DDR3 board and don't know for sure what multipliers you'll have availible. If you leave the (G)MCH Strap setting on auto, you can then cycle through all the possible System Memory Multiplier settings to find a suitable one.

    Now comes the trial and error part. As all components are different, you must give the CPU the correct amounts of Vcore, CPU Termination and PLL while giving the MCH enough voltage too.

    My prefered method when over clocking is to first set 1.3625V Vcore (max covered by Intel's warranty), then if I'm stable at the clock speed I want I reduce it down later. Only do this if the load temperatures at this Vcore are acceptable for you. I like to stay definitely under 70c when running prime, and under 65c if at all possible. I push to 70c if it's a speed I really want to hit.

    At 1.3625V Vcore I'd test with prime 95 again. It is possible it will fail. If so, increase CPU Termination to 1.22 and try again. Write down how long between failures according to prime at all levels of CPU termination you try. If for example it fails at 12 minutes with 1.2V, write "1.2V = 12 min". Do the same until you are stable for at least 8 hours on "Blend" or you reach 1.4V CPU Termination. I don't recommend personally that anyone go over 1.4V for CPU Termination. Everyone is different though and some believe up to around 1.45-1.46V to be safe.

    If every increase of CPU termination fails, don't worry, there are more settings to alter to bring stability. The notes you made are now very usefull as you need t set the CPU termination that lasted the longest in Prime95.

    I won't post any more things to change just yet, as it can be a little over whelming if too many things are reeled off at once.

    Give the above a go and report back on how it goes. If I were a betting man I'd say you shuld achieve stability at around 1.35V Vcore with 1.28-1.34V CPU termination. A single tweak mentioned in my last paragraph should cement stability at these approx settings if required, but it's not always necessary.
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  7. #17
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    Thanks. You 2 guys are really helpfull senior members.

    Getting to 4GHz sounds simpler than it is. It's a lot of trial and error is all.

    You are right. Ive tried various settings you listed and nothing has let it post yet. Just keep getting constant beeps. Im going to start over and write down each combination Im tryng and Ill post back in a bit.

  8. #18
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    If you are getting constant beps, I would suspect a RAM error.

    For 445 FSB you'll probably need to increase Static tRead. Try setting 10, then 11 if that doesn't work.

    If Static tRead has no effect, try a different System Memory Multiplier, remembering to keep RAM speed at or below 1333.
    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

  9. #19
    Chike is offline Senior Member
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    If you are increasing FSB, first boot with CPU Ration that gives you CPU speed less than you had before to make sure memory settings are not the problem.
    You may need to use a different multiplier/strap.
    As I said before, it's best to leave timings on auto and select multiplier that gives DDR-1066-1333 speed, one of the B or D straps multiplier should work.
    Increasing memory speed (by just increasing FSB) and leaving the timings as they were is equal to setting lower timings at the lower speed, which may have been pretty tight already (SPD timings for DDR-914 are 6-6-6-18)

  10. #20
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    Default Re: GA-EP45C-UD3R & E8500 OC help

    Ok. I set the timing to Auto and played with some of the settings you suggested:

    Motherboard: EP45C-UD3R

    Bios Version: F5e


    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ---------------- : [Auto]
    CPU Clock Ratio ------------------------ : [9x]
    Fine CPU Clock Ratio ------------------- : [0.0]
    CPU Frequency ---------------------------: 3.99 (444x9)

    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control ----------------- : [Enabled]
    CPU Host Frequency (Mhz) ----------------: [444]
    PCI Express Frequency (Mhz) ------------ : [100]

    C.I.A.2 -------------------------------- : [Disabled]

    Advanced Clock Control ------- [Press Enter]
    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 --------------- : [2.66D]
    Memory Frequency (Mhz) ----------------- : [1184]
    DRAM Timing Selectable ----------------- : [Auto]

    Standard Timing Control
    CAS Latency Time -------- 7 ------------ : [5]
    tRCD -------------------- 7 ------------ : [5]
    tRP --------------------- 7 ------------ : [5]
    tRAS ------------------- 20 ------------ : [18]

    Advanced Timing Control
    tRRD ------------------- 4 ------------- : [Auto]
    tWTR ------------------- 4 ------------- : [Auto]
    tWR -------------------- 8 ------------- : [Auto]
    tRFC ------------------- 60 ------------ : [68]
    tRTP ------------------- 4 ------------- : [Auto]
    Command Rate (CMD) ----- 0 ------------- : [2]


    Channel A
    Static tRead Value ---------- 11 ------- : [9]
    tRD Phase0 Adjustment ------------------ : [Auto]
    tRD Phase1 Adjustment ------------------ : [Auto]
    tRD Phase2 Adjustment ------------------ : [Auto]
    tRD Phase3 Adjustment ------------------ : [Auto]
    Trd2rd(Different Rank) ----------------- : [Auto]
    Twr2wr(Different Rank) ----------------- : [Auto]
    Twr2rd(Different Rank) ----------------- : [Auto]
    Trd2wr(Same/Diff Rank) ----------------- : [Auto]
    Dimm1 Clock Skew Control --------------- : [Auto] ps
    Dimm2 Clock Skew Control --------------- : [Auto] ps

    Channel B
    Static tRead Value ---------- 11 ------- : [9]
    tRD Phase0 Adjustment ------------------ : [Auto]
    tRD Phase1 Adjustment ------------------ : [Auto]
    tRD Phase2 Adjustment ------------------ : [Auto]
    tRD Phase3 Adjustment ------------------ : [Auto]
    Trd2rd(Different Rank) ----------------- : [Auto]
    Twr2wr(Different Rank) ----------------- : [Auto]
    Twr2rd(Different Rank) ----------------- : [Auto]
    Trd2wr(Same/Diff Rank) ----------------- : [Auto]
    Dimm1 Clock Skew Control --------------- : [Auto] ps
    Dimm2 Clock Skew Control --------------- : [Auto] ps

    Motherboard Voltage Control
    CPU
    Voltage Types------------ Normal -------- Current -----
    Load-Line Calibration ------------------ : [Disabled]
    CPU Vcore --------------- 1.25000V ----- : [1.35000V]

    CPU Termination --------- 1.200V ------- : [1.220V]
    CPU PLL ----------------- 1.500V ------- : [1.570V]

    CPU Reference ----------- 0.760V ------- : [Auto]

    MCH/ICH
    MCH Core ---------------- 1.100V ------- : [1.200V]
    MCH Reference ----------- 0.760V ------- : [Auto]
    MCH/DRAM Ref ------------ 0.750V ------- : [Auto]
    ICH I/O ----------------- 1.500V ------- : [1.500V]
    ICH Core ---------------- 1.100V ------- : [Auto]
    DRAM
    DRAM Voltage ------------ 1.500V ------- : [1.6V]
    DRAM Termination -------- 0.750V ------- : [Auto]
    Channel A Reference ----- 0.750V ------- : [Auto]
    Channel B Reference ----- 0.750V ------- : [Auto]

    Advanced Settings
    Limit CPUID Max. to 3 ------------------ : [Disabled]
    No-Execute Memory Protect -------------- : [Disabled]
    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]

    Integrated Peripherals
    Legacy USB Storage Detect -------------- : [Disabled]



    I ran Blend for passed 8k and no errors. Lowest temps 56c and highest 63c. =\ I guess thats pretty warm?

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