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Thread: Voltage tweeks for memory ddr2 on AM2+ Gigabyte Boards

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    Default Voltage tweeks for memory ddr2 on AM2+ Gigabyte Boards

    I was shopping for a Gigabyte motherboard recently and noticed they don't post memory voltage and decided to get a list together to help me make a decision on purchasing another AM2+ board. I already have the cpu and memory so I needed to find the right board to match. The Kingston hyperx memory that I purchased needed to be at 2.2 volts to run at 1066mhz. I had to download the motherboard manuals to find these numbers. I decided to share my list:


    DDR VOLTAGE for AM2+

    Chip set Motherboard DDR2 Bios Adjustments
    NV nForce 750a GA-M750SLI-DS4 1.8v +0.05V ~ +0.35V
    NV GeForce 8200 GA-M78SM-S2H 1.8v +0.1V ~ +0.3V
    AMD 770 GA-MA770-DS3 1.8v +0.025V ~ +0.35V
    AMD 770 GA-MA770-DS3P 1.8v +0.025V ~ +0.35V
    AMD 770 GA-MA770-S3 1.8v +0.025V ~ +0.35V
    AMD 770 GA-MA770-UD3 1.8v +0.025V ~ +0.375V
    AMD 780 GA-MA780G-UD3H 1.8v +0.1V ~ +0.5V
    AMD 780 GA-MA78G-DS3H 1.8v +0.1V ~ +0.5V
    AMD 780 GA-MA78G-DS3HP 1.8v +0.1V ~ +0.5V
    AMD 780 GA-MA78GM-S2H 1.8v +0.1V ~ +0.3V
    AMD 780 GA-MA78GM-S2HP 1.8v +0.1V ~ +0.3V
    AMD 780 GA-MA78GM-US2H 1.8v +0.1V ~ +0.3V
    AMD 780 GA-MA78GPM-DS2H 1.8v +0.1V ~ +0.3V
    AMD 780 GA-MA78GPM-UD2H 1.8v +0.1V ~ +0.3V
    AMD 790 GA-MA790X-DS4 1.8v +0.025V ~ +0.375V
    AMD 790 GA-MA790X-UD4 1.8v +0.1V ~ +0.5V
    AMD 790 GA-MA790X-UD4P 1.8v +0.1V ~ +0.6V
    AMD 790 GA-MA790FX-DQ6 1.8v +0.05V ~ +0.5V
    AMD 790 GA-MA790FX-DS5 1.8v +0.05V ~ +0.5V
    AMD 790 GA-MA790FX-UD5P 1.8v +0.1V ~ +0.7V
    AMD 790 GA-MA790GP-DS4H 1.8v +0.05V ~ +0.55V
    AMD 790 GA-MA790GP-UD4H 1.8v +0.05V ~ +0.55V

    The 1.8v is slightly higherthan 1.8v
    If you need any other ones I suggest you go to the motherboard web site and download the motherboard manuals. Happy shopping!
    Last edited by artdrivers; 29-04-2009 at 22:46. Reason: title

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    cH1ooo (18-10-2009)

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    Default Help with DRAM configuration

    Athlon II X-4 620 overclock to 3.0 GHz

    Under: Dram Configuration I chose Manual
    I got the
    DDr2 Voltage Control set to 1.900 v.
    Now i have: Northbridge Volt control [normal]
    Southbridge Volt Control [Normal]
    CPU NB VID Control [Normal}
    CPU Voltage Control [Normal]

    I tried change the memory settings and could not boot.

    Memory Clock says 920Mhz 1225Mhz, Shouldn't that be 1066Mhz

    My Memory is DDR2 Patriot Gseries Extreme Performance PC2-6400 800MHz

    My Dram Timing Control doesn't seem right. Memory package says 5-5-5-15
    The bios says 5-5-5-12

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    CPU: Phenom 4x 9600 w/ Thermaltake Big Typhoon Pro 14 CPU Cooler
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    Default


    I tried change the memory settings and could not boot.

    Memory Clock says 920Mhz 1225Mhz, Shouldn't that be 1066Mhz

    My Memory is DDR2 Patriot Gseries Extreme Performance PC2-6400 800MHz

    My Dram Timing Control doesn't seem right. Memory package says 5-5-5-15
    The bios says 5-5-5-12
    [/quote]

    When you change the CPU bus speed or frequency to from 200 to 230. The memory, northbridge, and HTlink will change with it. So if the memory mulyiplier is at x4.00 It would be 230X4.00=920Mhz but at 5.33 it would be 230X5.33=1225Mhz You may want to run CPUZ and check the HT Link speed. It may be to high at 230Mhz. Also the NB frequency which on cpuid is under the memory tab. On HT link, and NB, and DRAM you can reduce the multiplier to help with the overfrequency. The HT link is normally at x10. So if it was 200X10=2000x2 for double data rate (4000). You oc the bus to 230X10=2300X2 for DDR (4600). Too high it will overheat and shorten the life of the cpu. set HT link and northbridge to 9X230=2070 This will be a safer setting and the DRAM to 4.00 if errors go to 3.33X230=766Mhz If the memory multiplier is set to 4.00 set the timmings looser as in 5-5-5-15 and change trc=(row cycle time) to 20T If it is at 3.33 set it to 5-5-5-12 trc to 17T.
    http://www.techpowerup.com/articles/overclocking/64
    Last edited by artdrivers; 14-02-2010 at 10:50.

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    polaray (14-02-2010)

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    Default CPUZ Views


  7. #5
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    Default

    OK in bios you should change the HT link to 9X and the NB to 900 and the memory timing to 5-5-5-15-20trc

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    Default

    When you change the CPU bus speed or frequency to from 200 to 230. The memory, northbridge, and HTlink will change with it. So if the memory mulyiplier is at x4.00 It would be 230X4.00=920Mhz but at 5.33 it would be 230X5.33=1225Mhz You may want to run CPUZ and check the HT Link speed. It may be to high at 230Mhz. Also the NB frequency which on cpuid is under the memory tab. On HT link, and NB, and DRAM you can reduce the multiplier to help with the overfrequency. The HT link is normally at x10. So if it was 200X10=2000x2 for double data rate (4000). You oc the bus to 230X10=2300X2 for DDR (4600). Too high it will overheat and shorten the life of the cpu. set HT link and northbridge to 9X230=2070 This will be a safer setting and the DRAM to 4.00 if errors go to 3.33X230=766Mhz If the memory multiplier is set to 4.00 set the timmings looser as in 5-5-5-15 and change trc=(row cycle time) to 20T If it is at 3.33 set it to 5-5-5-12 trc to 17T.
    http://www.techpowerup.com/articles/overclocking/64
    well said

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    Default

    Change Dram to 3.33 Multiplier. changed trc to 17c Changed bus speed 225 13x mutliplier.
    Not clear on the Ht Link and NB.

    Thanks for the help i'm get closer I think.
    Athlon II X 4 620

    Gigabyte GA-MA74GM-S2 rev. 4.0
    Last edited by polaray; 14-02-2010 at 12:43. Reason: To ad meemory shot

  10. #8
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    Default

    I am looking at your NB frequency on your CPUZ memory tab it is to high.
    You will want to make these changes. Your HT link and NB frequencies are off. It is possible your HT link is at the maximum on that motherboard. Please check the HT link and see if you can go up higher and adjust the NB frequency down to 9x. This will help on that memory controller. Then try setting the memory mutiplier back to 4.00
    When you first go into BIOS Press and hold the Ctrl and press the F1 = (Ctrl + F1) Do this each time you enter bios.

    Code:
    MB Intelligent Tweaker(M.I.T.)
    }Advanced Clock Calibration (Note) [Press Enter] HT Link Frequency [Manual] X9 CPU Clock Ratio [Auto] CPU NorthBridge Freq. [Manual] X9 CPU Host Clock Control [Auto] x CPU Frequency(MHz) 225 PCIE Clock(MHz) [Auto] VGA Core Clock(MHz) [400] Set Memory Clock [Auto] x Memory Clock 4.00 800Mhz }DRAM Configuration [Press Enter] Press Enter System Voltage Control [Manual] x DDR2 Voltage Control Auto x NorthBridge Volt Control Auto x SouthBridge Volt Control Auto x CPU NB VID Control Auto x CPU Voltage Control Auto Normal CPU Vcore 1.3250V
    Code:
                        DRAM Configuration
    DCTs Mode (Note) [Unganged] 
    DDRII Timing Items [Manual] SPD Auto
    x CAS# latency 5T 5T 5T
    x RAS to CAS R/W Delay 5T 5T 5T
    x Row Precharge Time 5T 5T 5T
    x Minimum RAS Active Time 15T 15T 15T
    x 1T/2T Command Timing Auto -- --
    x TwTr Command Delay Auto 3T 3T
    x Trfc0 for DIMM1 Auto 105ns 105ns
    x Trfc2 for DIMM2 Auto -- --
    x Write Recovery Time Auto 5T 5T
    x Precharge Time Auto 3T 3T
    x Row Cycle Time 21T 21T 21T
    x RAS to RAS Delay Auto 3T 3T 
    CKE Power Down Mode [Disabled] 
    
    After setting the timing items save and exit be sure to press the y reboot and go back into bios.
    Check to see if changes are made. If not make the rest again especially the timing items.
    Last edited by artdrivers; 14-02-2010 at 13:55.

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    Default

    Thank you..I changed most of what you said. I left FSB at 220 13 multiplyer. Under NB frequency i didn't have a choice of x9. My options were Auto, 200Mhz 400Mhz, 600Mhz, 800Mhz and 1Ghz.
    I deleted the pics in image shack, not thinking they were still linked.
    Last edited by polaray; 14-02-2010 at 19:59.

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    artdrivers (14-02-2010)

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