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Thread: X48 DQ6 E0 E8500 at 4085Mhz




  1. #241
    Join Date
    Oct 2008
    Location
    Nimbin, Australia
    Posts
    339

    Default Re: X48 DQ6 E0 E8500 at 4085Mhz

    Ah guys, we already did that washer mod.

    That Prime95 76C cpu was at 32C ambient. I was impressed it stayed stable in that - and still is. We're having a heatwave here, already, in November.

    Psycho, I think u said before faster fans wouldn't help much?

    I am thinking to leave it running another week, then see if vcore can be lowered at all.
    Last edited by Salty; 11-28-2009 at 07:42 PM.





    CPU
    =
    i7 950 - DO stepping - Batch #3014A844
    Cooling = EK HF Full Nickel
    - XSPC RX360 - Laing DDC 18W - XSPC Bay Reservoir
    Motherboard = GA-X58A-UD3R Revision 2
    , BIOS Version = Award FC
    Ram = 3x2gig Corsair TR3X6G1600C8D G
    Video = 2 X Palit GTX460 Sonic Platinum 1GB OC sli
    Monitor = 22" LG Flatron W2242T 1680 x 1050 Case = Coolermaster CM690
    PSU = Corsair HX850
    OS = Windows 7 Professional x64


  2. #242
    Join Date
    Apr 2009
    Location
    J'Habite En Angleterre
    Posts
    2,431

    Default Re: X48 DQ6 E0 E8500 at 4085Mhz

    Faster fans may help, but likely the high temp is because the HS is at or near saturation. This would mean a large amount of air flow increase would be needed.

    The NF12's produce more static pressure than most decent fans of other brands. This means that in all likelihood, moving to say some Scythe 70 CFM would actuallt be a downgrade as the obstruction caused bt the fins really kills CFM figures on lower static pressure fans.

    A couple of tweaks can help. The first would be to use electrical tape and seal the sides of the TRUE so that the only way air can get in and out is via the fans. This cuts off another 1-2c for me. One tweak I haven't yet tried is to move the fan(s) further away from the heat sink and use a couple of ducts to maintain a seal. All fains have a "dead" spot in the centre where the fans Hub is, unavoidable as it houses the motor. Moving the fan further away eliminates this dead zone. You see similar things sold for water cooling radiators. They look like a fan frame but without a fan or support bars in them. This allows air fo be forced through the whole 120x120 surface with virtually zero dead zone.
    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

  3. #243
    Join Date
    Oct 2008
    Location
    Nimbin, Australia
    Posts
    339

    Default Re: X48 DQ6 E0 E8500 at 4085Mhz

    Same old post, same rig, best oc I can manage without water or phase in a hot climate. May have found something useful, maybe not.

    So far this summer in Northern NSW Australia its either been really hot or really wet.
    At ambient temperatures >35c for 3 days 4.42GHz overclock would bluescreen on a reboot, guaranteed. Ritually play with GTLs till reboot. Once it booted could run prime or occt for days, but a few really hot days would be too much. I've been told high temps can affect gtl integrity, so maybe that's it.
    4.33 could do the same bluescreen thing but less often. Same old story for months.

    Seems to have changed. Installed chipset drivers for 64bit vista dated 2009/11/16 from GA-X48-DQ6 - GIGABYTE - Support&Download - Motherboard - Driver round xmas.

    Didn't boot the first time on last settings after install - bluescreen - so back to -3% gtl and it booted. Not unusual. Usually shuffling between -3 and -6 would yield a clean boot. Just booting in and out of a setting seemed to be enough of a change to get a win.

    But since then I have not had the reboot bluescreens, even during the succession of Vista updates I had on hot days in January, so maybe the new mobo/chipset driver fixed something? I have been rebooting for over a month at 4.33GHz without a single bluescreen to spoil it.

    Anyway, just in case it's useful.

    18/4/2010
    Didn't last. Temperature decides. Ambient <24 degrees c, 4.33GHz reboots fine, gets fussy with reboot if hotter. Then Ambient <20 degrees c, 4.44GHz reboots fine, but gets fussy if hotter. Once booted 4.44 needs about three days over ambient 30 degrees c to bluescreen. Once 4.33 has booted it's fine.
    Last edited by Salty; 04-18-2010 at 11:03 AM.





    CPU
    =
    i7 950 - DO stepping - Batch #3014A844
    Cooling = EK HF Full Nickel
    - XSPC RX360 - Laing DDC 18W - XSPC Bay Reservoir
    Motherboard = GA-X58A-UD3R Revision 2
    , BIOS Version = Award FC
    Ram = 3x2gig Corsair TR3X6G1600C8D G
    Video = 2 X Palit GTX460 Sonic Platinum 1GB OC sli
    Monitor = 22" LG Flatron W2242T 1680 x 1050 Case = Coolermaster CM690
    PSU = Corsair HX850
    OS = Windows 7 Professional x64


  4. #244
    Join Date
    Oct 2008
    Location
    Nimbin, Australia
    Posts
    339

    Default Re: X48 DQ6 E0 E8500 at 4085Mhz

    The fussy bit for this PC was a 3B bluescreen at boot sometimes. Especially after an update or an instal that needed a restart. Once in, Prime95 would run forever, but not a totally stable boot. Now working on the assumption that is a driver loading problem, but whatever.

    Today, took a break from the i7-950 to play with this older PC:



    The only real changes in bios were 1.4625v vcore (1.424 in CPU-Z) and 50ps cpu clock skew. (Played with it before, but first time it has been really needed)

    Code:
    Robust Graphics Booster________________ [Auto]
    CPU Clock Ratio _______________________ [9] 
    Fine Clock Ratio ______________________ [0.5]
    CPU Host Clock Control_________________ [Enabled]
    CPU Host Frequency (MHz)_______________ [474] 
    PCI Express Frequency (Mhz)____________ [100]
    C.I.A. 2_______________________________ [Disabled]
    System Memory Multiplier (SPD)_________ [2.00D]
    DRAM Timing Selectable_______ SPD _____ [Manual]
    
    Performance Enhance =                   [Standard]
    
    CAS Latency Time_______________________ 5
    Dram RAS# to CAS# Delay________________ 5
    Dram RAS# Precharge Delay______________ 5
    Precharge Delay (tRAS)_________________ 15
    
    ACT to ACT Delay (tRRD)________________ 3
    Rank Write to READ Delay_______________ 3
    Write to Precharge Delay_______________ 6
    Refresh to ACT Delay___________________ 52 
    Read to Precharge Delay________________ 3
    Static tRead Value_____________________ 9
    Static tRead Phase Adjust______________ [Auto]
    
    CPU/PCIEX Clock Driving Control         [800mV]
    CPU Clock Skew Control                  [50ps]
    GMCH Clock Skew Control                 [Normal]
    
    System Voltage Control_________________ [Manual]
    DDR2 OverVoltage Control_______________ [+0.300V] 
    PCI-E OverVoltage Control______________ [+0.1V] 
    FSB OverVoltage Control________________ [+0.1V] 
    (G)MCH OverVoltage Control ____________ [+0.225V]
    CPU GTRLREF1 Voltage Ratio ____________ [-3%] 
    CPU GTRLREF2 Voltage Ratio ____________ [Normal]
    CPU Voltage Control____________________ [1.46250]
    
    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] Enabled if you use Vmware/Virtual PC
    
    Integrated Peripherals
    Legacy USB Storage Detect______________ [Disabled] *Note* Must be enabled to flash from USB
    Thermalright True 120, washer mod, 2 x Noctua push/pull fans, CM690 case, EVGA GTX460 (GTX280 died)
    G-Skill 1100MHz ram, X48-DQ6 mobo, Antec 550W True 2.0 PSU

    It's on the other side of the room. Prime has been running for four hours atm. The ambient is 22C, and the Max Coretemp is 81C. Would need water to go higher.

    I figure it'll be fine untill a reboot after a change, like a Vista upgrade or some install. It will have to finish loading it at stock, and then it can be put back to its OC till next time. That's what I'm used to.

    My i7 has no such glitch. Just give it more volts somewhere and keep it cool.

    Keep on overclockin'





    CPU
    =
    i7 950 - DO stepping - Batch #3014A844
    Cooling = EK HF Full Nickel
    - XSPC RX360 - Laing DDC 18W - XSPC Bay Reservoir
    Motherboard = GA-X58A-UD3R Revision 2
    , BIOS Version = Award FC
    Ram = 3x2gig Corsair TR3X6G1600C8D G
    Video = 2 X Palit GTX460 Sonic Platinum 1GB OC sli
    Monitor = 22" LG Flatron W2242T 1680 x 1050 Case = Coolermaster CM690
    PSU = Corsair HX850
    OS = Windows 7 Professional x64


  5. #245
    Join Date
    Oct 2008
    Location
    Nimbin, Australia
    Posts
    339

    Default Re: X48 DQ6 E0 E8500 at 4085Mhz

    At the limit for 24C ambient:
    Right click, view image for full size.








    CPU
    =
    i7 950 - DO stepping - Batch #3014A844
    Cooling = EK HF Full Nickel
    - XSPC RX360 - Laing DDC 18W - XSPC Bay Reservoir
    Motherboard = GA-X58A-UD3R Revision 2
    , BIOS Version = Award FC
    Ram = 3x2gig Corsair TR3X6G1600C8D G
    Video = 2 X Palit GTX460 Sonic Platinum 1GB OC sli
    Monitor = 22" LG Flatron W2242T 1680 x 1050 Case = Coolermaster CM690
    PSU = Corsair HX850
    OS = Windows 7 Professional x64


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