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Thread: Ud3p + e8400




  1. #1

    Default Ud3p + e8400

    Hey I have been looking around, this is my 1st Intel rig comming from old AMD socket 939 on a DFI board. I have been learning about the different terms like Vtt/PL, ect..


    I have a UD3P, E8400(E0), 2x2GB OCZ 1066 platinum
    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............:Auto(others wont boot)
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 400x9 3600
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 400Mhz
    PCI Express Frequency (Mhz) .........:100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 
    PCI Express Clock Drive.................: <<< 
    CPU Clock Skew (ps)....................: <<< 
    MCH Clock Skew (ps)...................: <<< 
    
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: 400[Auto]
    System Memory Multiplier ..............: 2.66D
    Memory Frequency (Mhz) ..............: 1066
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................4
    tRAS..........................................14
    
    Advanced Timing Control
    tRRD...........................................Auto
    tWTR..........................................Auto
    tWR............................................Auto
    tRFC...........................................52
    tRTP...........................................Auto
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................Auto
    
    Channel A
    Static tRead Value.........................:8
     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.........................:8
     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
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:1.200
    CPU Termination…..... 1.200V*.......: 1.200
    CPU PLL…………………....1.500V*.......: 1.500
    
    CPU Referen.…………....0.755V*.......: Auto
    
    CPU Reference2………,,0.800V*.......:Auto
    MCH/ICH
    MCH Core…………….....1.100V...........: 1.24
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave
    
    DRAM
    DRAM Voltage ……....1.800V............: 2.10V
    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave
    
    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] 
    
    Integrated Peripherals
    Legacy USB Storage Detect ..............[Enabled]
    I can do 3.6Ghz on low volts, but anytime I try and go higher it wont boot. I lower the multi and keep the memory at 1066 or I even tried 800 and it still wont boot. Its very strange, I tried giving more volts to everything and still nothing, so I have just been lowering volts on everything @3.6Ghz to see what my minimums are, lol.

    The other thing that is crazy is when I look for Static tRead sometimes it will be 8, sometimes 6 sometimes 10, this is all with the same 400FSB, wth?? I have it manually set to 8 but have used memset to do 7
    Last edited by SpeedEuphoria; 12-10-2008 at 10:11 PM.

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Ud3p + e8400

    Performance enhance will change your static Tread setting, aside from that what you see in the BIOS may differ at many times and wont be used in windows always if you use Auto for that. So manually set it always and you should be fine

    How high are you wanting to go?

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............:Auto(others wont boot)
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.8-4.0
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 425-450Mhz
    PCI Express Frequency (Mhz) .........:100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 800
    PCI Express Clock Drive.................: <<< 900
    CPU Clock Skew (ps)....................: <<< 50
    MCH Clock Skew (ps)...................: <<< 150
    
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: 400[Auto]
    System Memory Multiplier ..............: 2.66D
    Memory Frequency (Mhz) ..............: 1066
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................15/18
    
    Advanced Timing Control
    tRRD...........................................3-4
    tWTR..........................................3-6 (May need 12 first time you set it)
    tWR............................................4-6 (May need 14 first time you set it)
    tRFC...........................................52-62
    tRTP...........................................3-6
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................1066 (Test/benchmark 800 and 1200 as well)
    
    Channel A
    Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
     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.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
     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
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:1.175 << More of course, much more for 4Ghz as with vdrop you may need to set 1.38 or so to get 1.32 actual.  Of course not all chips are the same, Some do 4Ghz on 1.25 some need 1.34
    
    CPU Termination…..... 1.200V*.......: 1.100 << Way more for 3.6, and more for 3.6+ for sure (1.28-1.34 for 4Ghz)
    
    CPU PLL…………………....1.500V*.......: 1.350 << Try stock of 1.5
    
    CPU Referen.…………....0.755V*.......: Auto
    
    CPU Reference2………,,0.800V*.......:Auto
    MCH/ICH
    MCH Core…………….....1.100V...........: 1.20 (1.24-1.28 for 2x2GB)
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< 1.55-1.6
    ICH Core…………...……1.100V............: <<<1.1x-1.2
    
    DRAM
    DRAM Voltage ……....1.800V............: 2.0-2.10V
    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave
    
    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] 
    
    Integrated Peripherals
    Legacy USB Storage Detect ..............[Enabled]

  3. #3
    Join Date
    Nov 2008
    Location
    London, UK
    Posts
    41

    Default Re: Ud3p + e8400

    May need to Disable Legacy USB Storage Detect perhaps?
    Intel E8400 E0 3GHz @ 4.0GHz (444x9) stable (provisionally), max 4.4GHz (489x9), Zalman CNPS 9700 (core temp 46c @ max load @ 4.0GHz),
    Gigabyte GA-P35-S3G F5b BIOS + 40mm fan on MCH, Geil Black Dragon DDR2-PC8500C5 (2x1GB) @ 1066MHz (444x2.4)
    Sapphire ATI HD 4850 Dual Slot Cooler (64c @ max load), Dell 3007WFP 30" (2560x1600)
    Seagate 500GB SATA2 7200rpm 32MB cache, Samsung 500GB SATA2 7200rpm 16MB cache, LG GH22LP20 22x DVD+/-RW
    Corsair TX 650W, Antec Three Hundred + 2x120mm front fans, WinXP SP3 Home

  4. #4

    Default Re: Ud3p + e8400

    Quote Originally Posted by Lsdmeasap View Post
    Performance enhance will change your static Tread setting, aside from that what you see in the BIOS may differ at many times and wont be used in windows always if you use Auto for that. So manually set it always and you should be fine

    How high are you wanting to go?

    OK on that performance enhance, it always defaults to turbo so thats why i see different things sometimes.

    I just passed Prime blend for 8+hrs on the above settings that I posted @3.6(F7a bios), just to get a reference point. I think I can go a little lower on a couple voltages but just wanted a starting point for reference.


    I'm looking to go to 4Ghz+, but I was having trouble getting 3.83 even. I'll give it another try in a sec. Like what would be the major things I would need to change if running 500 FSB, like to run 500x8. I just give more to the MCH and cpu/vtt/pll

    Quote Originally Posted by Pum View Post
    May need to Disable Legacy USB Storage Detect perhaps?
    Why do you say that? The only reason I know its on is b/c I checked as I just flashed it to F7a bios
    Last edited by SpeedEuphoria; 12-12-2008 at 07:49 PM.

  5. #5
    Join Date
    Nov 2008
    Location
    London, UK
    Posts
    41

    Default Re: Ud3p + e8400

    I've seen it recommended in other post on OCing, by Lsdmeasap, I think. He seems to know his stuff, so I assume it can help.
    Intel E8400 E0 3GHz @ 4.0GHz (444x9) stable (provisionally), max 4.4GHz (489x9), Zalman CNPS 9700 (core temp 46c @ max load @ 4.0GHz),
    Gigabyte GA-P35-S3G F5b BIOS + 40mm fan on MCH, Geil Black Dragon DDR2-PC8500C5 (2x1GB) @ 1066MHz (444x2.4)
    Sapphire ATI HD 4850 Dual Slot Cooler (64c @ max load), Dell 3007WFP 30" (2560x1600)
    Seagate 500GB SATA2 7200rpm 32MB cache, Samsung 500GB SATA2 7200rpm 16MB cache, LG GH22LP20 22x DVD+/-RW
    Corsair TX 650W, Antec Three Hundred + 2x120mm front fans, WinXP SP3 Home

  6. #6

    Default Re: Ud3p + e8400

    OK the main thing that confuses/frustrates me is coming from the old AMD rig, if the memory is set for a certain speed then if you play w/ multipliers as long as you keep it at/near the same speed the settings will be close. On this board I keep the mem at 1066 but use a different multi and higher fsb and it wont get to windows, I guess I can understand the PL level.

    I just tried everything to get 444x8 and it hosed my windows, lol. It made it in a couple times but never more than a minute or 2, reduced to 440x8 just to see and nothing either

    This is the loosest setting I tried w/ no luck, 1st was 444x8 then 440x8 just to see.

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............:Auto
    CPU Clock Ratio ..........................: 8
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 440x8 3520, 444x8 3552
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 440-444Mhz
    PCI Express Frequency (Mhz) .........:100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800
    PCI Express Clock Drive.................: 900
    CPU Clock Skew (ps)....................: 50 
    MCH Clock Skew (ps)...................: 150
    
    
    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) ..............: 1056-1066
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5-7
    tRP'...........................................5-7
    tRAS..........................................15-18
    
    Advanced Timing Control
    tRRD...........................................6
    tWTR..........................................12, 4
    tWR............................................14, 6
    tRFC...........................................52-72
    tRTP...........................................4-6
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................Auto/1066
    
    Channel A
    Static tRead Value.........................:8-10
     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.........................:8-10
     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
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:1.2-1.25
    CPU Termination…..... 1.200V*.......: 1.2-1.28
    CPU PLL…………………....1.500V*.......: 1.5-1.57
    
    CPU Referen.…………....0.755V*.......: Auto
    
    CPU Reference2………,,0.800V*.......:Auto
    MCH/ICH
    MCH Core…………….....1.100V...........: 1.28-1.3
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave
    
    DRAM
    DRAM Voltage ……....1.800V............: 2.10V
    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave
    
    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] 
    
    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled]
    I think my memory sucks, lol or I'm missing something??
    Last edited by SpeedEuphoria; 12-10-2008 at 11:51 PM.

  7. #7
    Lsdmeasap's Avatar
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    Default Re: Ud3p + e8400

    You need to use the D strap after 400 FSB and likely more vcore as that 1.25 may be less then 1.00 even

    Try 401 FSB again with 9 CPU multi and 2.66D for now with more Vcore and see how you get along. That should be 3.6 with your ram at 1066.

    You are just not going to find stability on that B strap unless you stay under 400 FSb

  8. #8

    Default Re: Ud3p + e8400

    I just turned back on the LLC. Now I have 1.216 in windows idle and load. W/o LLC I got 1.20 and load of 1.186 or something.

    I also have done some extensive testing and found that so far, only switching from the 2.000D to the 2.00B on good settings causes a no boot so I have been sticking to 2.00D. I also have been just sticking with 1:1 memory.


    I have found that the MCH reff is the most important setting as well as "Cpu Clock drive". I changed the clock skew from 800mv(default setting) to 900 or 700 on good settings and it would not boot at all.

    The MCH ref for me is the most important setting, after finding that which whatever it takes to get a ".700v" in ET6. The thing is that the value changes w/ Cpu termination, so leave that and set the MCH ref to ".700v", then if you change the Cpu termination it will change this value but will still be in the correct ratio which will allways show as .70v in ET6.

    All of the other reff values are fine on auto for me, I changed many of them even the Dram reff ones, but till I try to tweak my ram further I'll leave those.Heres my main settings.

    So far I primed it at 464x9 for 2hrs same basic settings just more vcore. But went back to see what I could run at near stock voltages. So far with LLC off 410x9 is the best I can do on 1.25v. W/ LLC on I'm working on 422x9.

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............:Auto
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 410x9 3710, 420x9 3780 LLC
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 410 420Mhz LLC
    PCI Express Frequency (Mhz) .........:100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800 important!
    PCI Express Clock Drive.................: 900 also important? leave at default
    CPU Clock Skew (ps)....................: 50 not so much?
    MCH Clock Skew (ps)...................: 150 not so much?
    
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 2.00D
    Memory Frequency (Mhz) ..............: 840
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................4 
    tRAS..........................................14 
    
    Advanced Timing Control
    tRRD...........................................6
    tWTR.......................................... 4
    tWR............................................ 6
    tRFC...........................................52
    tRTP...........................................4
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................Auto
    
    Channel A
    Static tRead Value.........................:8
     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.........................:8
     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
    
    CPU
    Load Line C..(LLC)...................: Enable
    CPU Vcore….……….........................:1.25(normal)
    CPU Termination…..... 1.200V*.......: 1.20 very important
    CPU PLL…………………....1.500V*.......: 1.35 or 1.5 or 1.57
    
    CPU Referen.…………....0.760V*.......: Auto
    
    CPU Reference2………,,0.800V*.......:Auto, not sure I have this?
    MCH/ICH
    MCH Core…………….....1.100V...........: 1.28-1.32
    MCH Reference….…….0.800V...........;Must be .74-5when Cpu term is 1.2,shows.70 in ET6, very important!!
    MCH/DRAM Ref.…......0.900V...........:auto, for now
    ICH I/O……………….....1.500V............: 1.350 or stock 1.50
    ICH Core…………...……1.100V............: <<< Leave
    
    DRAM
    DRAM Voltage ……....1.800V............: 2.06V
    DRAM Termination .…0.900V............: auto for now
    Channel A Reference 0.900V............: auto for now
    Channel B Reference 0.900V............: auto for now
    
    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] 
    
    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled]
    Last edited by SpeedEuphoria; 12-13-2008 at 01:15 AM.

  9. #9
    Lsdmeasap's Avatar
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    Default Re: Ud3p + e8400

    Ya, over 400 FSB makes using B strap very unstable

    Set your driving strengths that may help, as well as you for sure need to add some Vtt to get 4Ghz, I use 1.32-1.34 for 4Ghz

    And yes, Vtt and All ref's are tied together so you have to set Vtt first, then adjust your ref's

  10. #10

    Default Re: Ud3p + e8400

    Now stable @ 424x9 3816, still on stock Vcore

    All I changed was CPU termination(VTT) to 1.22, MCH to 1.32, MCH Ref to .66(when CPU term is 1.2, or what ET6 shows)

    ET6 will always show you MCH ref and CPU ref assuming that CPU term is 1.2. So if you like for me If I set CPU term(VTT) to 1.2 and CPU ref to .76 and MCH ref to .66, then change CPU term(VTT) to 1.22, the ref numbers will raise slightly, but ET6 will still report them the same. I try to think of it as a divider/strap/multiplier as its locked at that ratio but it still changes when you change CPU termination(VTT). Basically ET6 will show .76 cpu ref no matter what VTT if its set on auto.

    Also from what I have read its best to have CPU termination set just below the Vcore. So for me going to 1.22 added a little stability. When using more Vcore then you should raise the VTT higher.

    People were saying on another forum that with high FSB the "B" strap may be more stable. Since I'm so close to 400 FSB, the "B" strap is not stable at all and wont boot, lol. I think its only when you get to 500FSB or higher that you can try the "B" strap again and it may be more stable.


    As of now I have turned to adjusting the Clock Skew as I think I have the other settings pretty dialed in for now. I know that 500ps is too much as it wont boot. I'm priming 300ps now as 200ps seemed to work well.

    This is with 9x428 3852, still stock Vcore!
    Last edited by SpeedEuphoria; 12-14-2008 at 11:48 PM.

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