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Thread: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability




  1. #1
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    Default EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    Hi, I am looking for a little help in overclocking my system. Normally I would just upgrade but I am not young and rich anymore and now kids come before computers. So I want to squeeze a bit more out of my system.

    I seem to be able to get a steady 3.4ghz out of my Q9550 but I would ideally like 3.6ghz as there are some fun new games coming out soon. Also having trouble getting RAM to work at 1600

    I have a few general questions and then on the overclocking.

    1. I downloaded the F8l beta bios but this seems to be worse for overclocking than the F7 I was using. Also it has corrupted a few settings at the bottom of the integrated peripherals page.
    Are there patch notes for this bios?
    I ended up going back to the F8C bios as F8l would hang when I went to Integrated Peripherals

    2. C1E and EIST, do these cause instability when overclocking?
    I have noticed that if I set the CPU voltage manually that the voltage doesn't get lowered in Windows. When it is auto I can see the CPU voltage going up and down under load.

    3. I am using new low voltage memory, CMZ8GX3M2A1600C9 to be exact. My board initially volted it to 1.744v at 1333mhz and 1.96v at 1600mhz. I set it back to 1.5v for most overclocking and up to 1.6v.
    This memory is rated at 1.5v, does any one know what voltage it can take?

    4. The CMZ8GX3M2A1600C9 is the 3rd set of ram I have run through this board. All of it was rated at 1600 but could never get there. Not sure if I was missing a voltage setting or if P45's just don't like that speed.

    5. In general what voltages affect stability? I know about north bridge (MCH Core), CPU and Dram but do any of the other voltages matter?
    CPU
    Load Line Calibration
    CPU Vcore….……….........................:
    CPU Termination…..... 1.200V*.......:
    CPU PLL…………………....1.500V*.......:
    CPU Referen.…………....0.755V*.......:
    CPU Reference2………,,0.800V*.......:

    MCH/ICH
    MCH Core…………….....1.100V...........:
    MCH Reference….…….0.800V...........:
    MCH/DRAM Ref.…......0.900V...........:
    ICH I/O……………….....1.500V............:
    ICH Core…………...……1.100V............:

    DRAM
    DRAM Voltage ……....1.800V............:
    DRAM Termination .…0.900V............:
    Channel A Reference 0.900V............:
    Channel B Reference 0.900V............:



    My main problem has been getting the memory to run at 1600 on a 400 FSB. The times that I have got it working it never sticks after a reboot. The bios always hangs on a reboot and puts in the default settings. Maybe more Dram voltage would help here but I am not sure how high I can go on 1.5v ram.

    I have a Google Docs spread sheet of my attempts here if you want a look over and can suggest anything, that would be great!
    Google Spreadsheet

  2. #2
    profJim's Avatar
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    If you loaded Optimized Bios settings before you started tweaking, you should see:
    Code:
    CPU Clock Drive ---------------------- : [800mV]
    PCI Express Clock Drive -------------- : [900mV]
    CPU Clock Skew (ps) ------------------ : [0]
    MCH Clock Skew (ps) ------------------ : [0]
    Don't manually change these settings!!

    Check out http://forums.tweaktown.com/gigabyte...tml#post295784, post #5 for suggested bios settings without an overclock.

    We can best help you if you follow steps 1 - 4 in the post so that we can quickly see your hardware setup and the applied settings. Check out GA-EP45T-USB3 & Crucial Ballistix help requested for additional information and suggestions.

    MCH Core = 1.20 is probably too low. With 4GB of memory, you'll probably need 1.24 - 1.28, possibly more.

    Don't use 400MHz, many find that 399 or 401MHz is much easier to get stable.
    You can use the forum's Advanced search feature where you search on the keyword EP45T and select "Search Titles Only", where you will find many EP45T threads.

    Don't get fixated on 1600MHz memory speeds. You will often find equally good performance using somewhat lower memory speeds with tighter memory timings. Many EP45 DDR3 systems initially had trouble trying to run their memory at its full rated speed. Start somewhat lower and when stable, you can try for higher memory speeds.

    I hope that you are NOT running more than 10 IBT loops when testing. IBT is good for a quick and dirty stability test, but you really need to run Prime95 for an extended stability test for at least 6 - 10 hours. HCI Memtest is a much quicker test that should run for about one hour when properly set up.

    Your speadsheet is great. It might be easier for us if you post future bios settings in your post(s).

    You should be able to run your memory at it's maximum rated voltage or possibly slightly higher if needed. Please provide a direct link to your memory's full specs.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
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    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
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    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
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    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
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    .


  3. #3
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    Hey, thanks for the reply.

    I have been lading the Optimized Defaults after the system hangs at boot.
    Also haven't fiddled with the Advanced Clock Control settings, I don't think they are even on my list to fiddle with.

    The memory is 8gb (2x4gb) and I was trying to run 1.2v on MCH for a while, maybe that was my problem...In my latest bios build I have MCH Core at 1.24v.

    Yeah I now have FSB at 412 and will try 424 maybe tomorrow. I have resigned myself to the fact that I probably won't get the memory running at the full 1600 and am happy to lower the timings while pushing up the FSB with a 3.33 divider.

    Testing - so far I have been using IBT at only 1 or 2 loops on Maximum. That takes around 6 minutes per loop.
    I'll grab HCI Memtest as well.

    This is the memory: Vengeance
    It runs at 1.5v and I currently have it at 1.6v which along with the higher MCH Core seems to be helping a lot.

    I have moved my latest Bios settings to the far left of the spreadsheet to make them easier to see but will also post here.

    I'll get the posts read that you linked and come back with more information.

    Cheers :)

  4. #4
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    With 8GB of memory, MCH Core = 1.28 - 1.34 might be needed.
    Reference volt settings are fine using AUTO, unless you o/c to 4.0GHz or higher.
    My preference is to manually set the primary memory timings and tRD (Static tRead Value).

    Happy post reading ;)
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  5. #5
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    Checking the Corsair website, your memory has been tested with newer motherboards only, not with any P45 setups.
    The first generation DDR3 modules used much higher dram voltage settings.
    By all means, continue with your testing, but you might save yourself a lot of grief if you contact Corsair tech support and see what they have to say about trying to use your current memory with your P45 system.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  6. #6
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    OK so I have steps 1 to 4 done and included in this post. Not sure on my PSU as it gets mount in a weird way in the Silverstone case and I can't see the sticker...Pretty sure it is a 750w Thermaltake.

    The below system has passed a few Intel Burn Tests and PC/3DMark Vantage.
    The only problem is it sometimes doesn't come out of suspend/sleep mode, that kind of annoys me as I use LogMeIn to connect to the computer sometimes.

    profJim, I upped MCH to 1.3 and maybe I am imagining things but it seems to come out of sleep mode quicker.

    I have asked around on the Corsair forums what voltage this memory will take but haven't had any answers.

    EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability-combined-jpg


    Motherboard Gigabyte GA-EP45T-UD3P Rev 1.0
    Cpu C2Q Q9550 (Stock = 2830mhz)
    Ram Corsair 2x4GB C9 1.5v CMZ8GX3M2A1600C9
    Power Supply Unit 750 watt Thermaltake


    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster -------- [Auto]
    CPU Clock Ratio ---------------- 8
    Fine CPU Clock Ratio ----------- 0.5
    CPU Frequency -------------- 3502

    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control --------- [Enabled]
    CPU Host Frequency (Mhz) ------- 412
    PCI Express Frequency (Mhz) ---- 100
    C.I.A.2 ------------------------ [Disabled]

    Advanced Clock Control ------- [Press Enter]
    CPU Clock Drive ---------------- default
    PCI Express Clock Drive -------- default
    CPU Clock Skew (ps) ------------ default
    MCH Clock Skew (ps) ------------ default

    DRAM Performance Control
    Performance Enhance ------------- [STANDARD]
    Extreme Memory Profile - (XMP) - [Disabled]
    (G)MCH Frequency Latch --------- 400
    System Memory Multiplier ------- 3.33D
    Memory Frequency (Mhz) --------- 1373
    DRAM Timing Selectable --------- [Manual]

    Standard Timing Control
    CAS Latency Time ------- ?? ---- 9
    tRCD ------------------ ?? ---- 9
    tRP -------------------- ?? ---- 9
    tRAS ------------------ ?? ---- 24

    Advanced Timing Control
    tRRD ------------------ ?? ---- 6
    tWTR ------------------ ?? ---- 6
    tWR -------------------- ?? ---- 12
    tRFC ------------------ ?? ---- 128
    tRTP ------------------ ?? ---- 6
    Command Rate (CMD) ------------- 2

    Channel A Timing Settings -- {Press Enter to change settings)
    Static tRead Value ------------- [Auto]
    tRD Phase0 Adjustment ---------- [Auto] <-- leave this and below set to 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 Timing Settings {Press Enter to change settings)
    Static tRead Value ------------- [Auto]
    tRD Phase0 Adjustment ---------- [Auto] <-- leave this and below set to 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 A and B Driving Settings ------ {Press Enter to change settings)
    Driving Strenght Profile ------- [Auto] <-- setting for channel A
    Driving Strenght Profile ------- [Auto] <-- setting for channel B

    Motherboard Voltage Control
    CPU
    Voltage Types--------- [MANUAL]
    Load-Line Calibration ---------- [ENABLED]
    CPU Vcore ----------- 1.225 -- 1.325
    CPU Termination ----- 1.200V* -- 1.28
    CPU PLL ------------- 1.500V* -- 1.61

    CPU Reference ------- 0.755V* -- [Auto] <-- Auto Will set this correctly
    CPU Reference2 ------ 0.800V* -- [Auto] <-- Auto Will set this correctly

    MCH/ICH
    MCH Core ------------- 1.100V -- 1.3
    MCH Reference -------- 0.800V -- [Auto]
    MCH/DRAM Ref --------- 0.900V -- [Auto]
    ICH I/O -------------- 1.500V -- [Auto] <-- set to the value to the left
    ICH Core ------------- 1.100V -- [Auto] <-- set to the value to the left
    DRAM
    DRAM Voltage --------- 1.500V -- 1.6
    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 ----------- NA
    x C4/C4E State Support --------- NA
    CPU Thermal Monitor 2 (TM2) ---- [Enabled]
    CPU EIST Function ------------- [Disabled]
    Virtualization Technology ------ [Disabled] <-- Enabled if you use Vmware/Virtual PC

    Integrated Peripherals
    Legacy USB Storage Detect ----- [DISABLED]
    Intel 3930k
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    16GB (4x4GB) 2133mhz Patriot PXD38G2133C11K
    2 x Sapphire 7970 Dual-X OC
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    2 x Samsung F1 500GB
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  7. #7
    Chike is offline Senior Member
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    I would leave Advanced Timing Control auto.
    SPD says 1.5v for a single module so maybe 1.6v is not needed?
    I the table I saw many settings change. Stick with the winning horse, try t change as few settings as possible.
    Chasing the memory advertised specs is pointless. Try to find a balance between memory settings and you CPU OC goal or limit.
    Performance is what you are after (at least I am) not a number on memory sticker.

    EDIT: there is a newer beta BIOS F8i in the beta BIOS sticky, try to track what changes made since jan 2010, there were several BIOS updates for most of the boards with memory compatibility fixes. To use it or not it's up to you.
    Last edited by Chike; 02-24-2011 at 06:49 PM.

  8. #8
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    Quote Originally Posted by profJim View Post
    With 8GB of memory, MCH Core = 1.28 - 1.34 might be needed.
    Reference volt settings are fine using AUTO, unless you o/c to 4.0GHz or higher.
    My preference is to manually set the primary memory timings and tRD (Static tRead Value).
    By Reference volt settings do you mean:
    CPU Reference ------- 0.755V* -- [Auto] <-- Auto Will set this correctly
    CPU Reference2 ------ 0.800V* -- [Auto] <-- Auto Will set this correctly
    So far I haven't touched those ones.

    So far the memory settings are the ones claimed by Corsair although at a lower speed.
    Any suggestions for tRD?

    Quote Originally Posted by Chike View Post
    I would leave Advanced Timing Control auto.
    SPD says 1.5v for a single module so maybe 1.6v is not needed?
    I the table I saw many settings change. Stick with the winning horse, try t change as few settings as possible.
    Chasing the memory advertised specs is pointless. Try to find a balance between memory settings and you CPU OC goal or limit.
    Performance is what you are after (at least I am) not a number on memory sticker.

    EDIT: there is a newer beta BIOS F8i in the beta BIOS sticky, try to track what changes made since jan 2010, there were several BIOS updates for most of the boards with memory compatibility fixes. To use it or not it's up to you.
    Advanced Timing Control - they get pretty loose on auto so I haven't tried it in a while.
    So still set the Standard Timing Control?

    Yeah I got the ****s with the memory so whacked it up to 1.6v as it seems to be the biggest culprit of instability. I'll move it down once I get where I want to go.
    I think maybe a lot of the voltages are too high at the moment, recommendations would be good :)

    The system settings on the spreadsheet are kind of milestones or dead ends. Things change slower in between although I have made some big jumps in the hope I hit gold :)

    I tried the F8l bios a couple of days ago but it corrupted some settings on the Integrated Peripherals page and would lock up the computer when moving around in BIOS so I went back F8C which I got from the Gigabyte webpage. I was never able to find what had changed between F7 --> F8C and F8l.

    What I am looking for:
    3600mhz (423x8.5), ram at 1410. Most voltages apart from NB and CPU could stay at auto or stock?

    Or 3800 (447x8.5), ram at 1488. That is still under spec speedwise for the ram so it could stay at stock voltage (1.5v)

    What do you think is the highest CPU speed I could go on Auto or defualt CPU voltage?
    It would be nice to have the system lower the CPU voltage when idle through EIST and C1E.
    Intel 3930k
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    2 x Sapphire 7970 Dual-X OC
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    OCZ Vertex 4 256GB
    2 x Samsung F1 500GB
    Silverstone Fortress FT02S

  9. #9
    profJim's Avatar
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    In post #5, Memset shows tRD = 10 for each memory channel.

    Here are some general possible settings for EP45 DDR2 systems, YMMV.
    From 400MHz and higher you can use the "B" or "D" memory straps. Some find that it's easier to get their systems stable when using the D-strap.
    With cpu bus speed:
    • 400 ~ 420, tRD = 7 with the B-strap.
    • 421 ~ 460, tRD = 8 with the B-strap.
    • 461 ~ 500+, tRD = 9 or 10 with the B-strap.
    • With the same cpu bus speed and using the D-strap, tRD will need to be set +1 step higher than the B-strap setting up to about 480MHz.
    • ~ 480MHz and higher with the D-strap, tRD can usually be set 1 step lower than the B-Strap.
    • Lower (tighter) tRD settings give somewhat better memory performance in benchmarks.


    Tweaking Advanced memory timings should be done after you've reached a "final" stable overclock. These tweaked settings should result in a modest improvement, but this will take a lot of extra time with stability/stress testing.
    Tweaking Reference Volt settings usually isn't needed until until your running at 3.90 - 4.00+ GHz.

    Most Q9950/EP45 setups easily o/c to 3.80 - 3.90 GHz.

    You have the following B/D memory strap options:
    2.00B, 2.40B, 3.20B, and 4.00B
    2.00D, 2.66D, 3.33D

    You might find the following setup gives the best overall performance (without going to extremes):
    450MHz x 8.5 = 3.825GHz cpu speed
    450MHz x 3.33(D) = 1495MHz memory speed (tRD = 9 or 10)
    450MHz x 3.20(B) = 1440MHz memory speed (tRD = 8 or 9)

    You'll probably find that higher cpu bus speeds with somewhat lower memory speeds will give you the best system performance.
    With the exception of some benchmarking utilities, most programs won't be noticeably faster when using the highest possible memory speeds.

    Re your questions:
    1.60 memory voltage might not hurt your memory, see if your system is stable with 1.50 - 1.52 volts.
    When your system is stable with bios version Fxx, flashing to another bios version usually/often requires some bios tweaks to be stable.
    Rather than worry about stock cpu voltages, you can have multiple stable saved bios profiles and just load the saved profile when you want lower versus higher performance settings.
    Check out http://forums.tweaktown.com/gigabyte...tml#post293487, post #31 for more information.
    Last edited by profJim; 02-25-2011 at 04:09 PM.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  10. #10
    Chike is offline Senior Member
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    Default Re: EP45T-UD3P, Q9550 and CMZ8GX3M2A1600C9 - overclock and stability

    There are other beta BIOSs between 8c and 8i, see in the EP45 previos beta BIOS link in page 1 of beta BIOS.
    Auto will set timings as they should be, especialy if you select XMP profile1, for most standard timings too excluding CAS.
    DDR-1410 may be possible with CL 8but you may need the higher voltage.

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