Memory Timings question.

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fasadglas

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Memory Timings question. Sunday, March 04, 2012 2:31 AM (permalink)
Hello, I'm confused regarding memory timings, I've got 48Gb of DDR3-1333 Adata XPG Gaming series RAM.
On the Adata website, it says that the memory timings of my ram is 9-9-9-24, but for me in my setup it's 7-7-7-20. And also on the website it says that the max speed of the modules are 2000MHz but from what i understand my modules are at 533Mhz witch is disappointing. Keep in mind that I have no knowledge what so ever about memory timings  (And I'm sure these are stupid questions). My question is really should I manually change the timings in BIOS to 9-9-9-24 ? And why is my modules at 533MHz when it "should be" 2000Mhz?
 
Heres' exactly what AIDA64 says about my ram
Memory Timings: 7-7-7-20  (CL-RCD-RP-RAS)
DIMM1-12: A-Data DDR3 1600G    4 GB DDR3-1333 DDR3 SDRAM  (8-8-8-22 @ 609 MHz)  (7-7-7-20 @ 533 MHz)  (6-6-6-17 @ 457 MHz)
 
Thanks
 
#1
    alan_a1

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    Re:Memory Timings question. Sunday, March 04, 2012 8:26 AM (permalink)
    Hi Fasadglas, it would be nicer if you provide more details about ur pc, what Bios/cpu do you use?

    Anyway, Im assuming that you don't overclock and your PC is running at stock speed. ur memory speed now is 1066Mhz, you can check in AIDA Menu :Motherboard --> Motherboard : and look for Effective clock.
    (This is ur memory speed)DDR technology allows the memory to process twice per clock cycle. real clock x 2 = 533Mhz x 2 = 1066Mhz


    here is how memory speed is calculated in SR2 Bios: 
    Memory Speed = bclock(CPU frequency setting) x System Memory Multiplier (Memory frequency)
    Memory Multiplier or Memory frequency as in SR2 Bios is quite tricky and not direct:
    800Mhz = x6
    1066Mhz = x8
    1333Mhz = x10

    In ur case at stock speed:bclock(133Mhz) X System Memory Multiplier (x8) = 1064Mhz (shows 1066Mhz)
    If you are not going to overclock, the maximum memory speed you can achieve is 1333Mhz by changing the memory Multiplier (Memory frequency) in the bios to x10.
     
     
    Overclocking Guides :

      3 Step Overclocking Guide  (Read & understand this one first)
     SR2 OC BIOS Template
    <message edited by alan_a1 on Sunday, March 04, 2012 8:29 AM>
     
    #2
      fasadglas

      • Total Posts : 9
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      Re:Memory Timings question. Sunday, March 04, 2012 1:21 PM (permalink)
      Hi, thanks a lot for the info.. I feel enlightened !
      I'll try to overclock I think.
       
      alan_a1

      Hi Fasadglas, it would be nicer if you provide more details about ur pc, what Bios/cpu do you use?

      You're right, I totally forgot that
      And I have dual X5680's, A56 bios and a Corsair AX1200 psu.
      <message edited by fasadglas on Wednesday, March 21, 2012 5:57 PM>
       
      #3
        fasadglas

        • Total Posts : 9
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        Re:Memory Timings question. Wednesday, March 21, 2012 5:55 PM (permalink)
        Sorry for starting such an old thread again.. But I didn't really get if I should manually change my memory timings manually to 9-9-9-24 ? Since that's what the stock CAS says... From what I understand lower is better but then again I'm not sure about this either...I feel so stupid buying such hi end hardware and not really knowing how to tweak it.
         
        And if someone could, it would be nice to point me in the right direction to overclock my RAM to 2000Mhz.
         
        I'd also like to oc my cpus to 4 or 4.2 Ghz.
        If someone has done this with tho x5680s
        I would appreciate if you could post your settings.
         
        My idle temp is 26c
        And it never goes beyond 32c.
         
         
        My setup is:
        1x Corsair AX1200
        2x Xeon x5689
        2x AMD HD6970 (in crossfire mode)
        12x 4Gb DDR3-1333 Adata XPG Gaming series
         
        The cooling setup is:
        2x EK-Supreme HF Nickel CPU blocks
        2x EK-FC6970 Acetal gfx Blocks
        1x EK-FB SR-2 Mobo block
        2x Alphacool VPP655 Pumps with EK-D5 Dual tops
        2x XSPC RX480 Quad Radiator (With 4 Gentle Typhoon's (1150rpm) on both sides each, is this overkill? should I remove those who doesn't push air in i.e those who sucks out air?)
        1x EK-Multioption RES X2 400 Basic
         
        The watercooling has a separate PSU:
        Seasonic X-Fanless PSU 400w
         
        The case is: Lian-LI PC-v2120X
         
        I might add that im not done with the water cooling, the radiators lies beside the case on a table, so the tubing is too long. In other words it's not as "tight" as it should be, I think I could bring the heat down a couple of degrees when it's done. I have two radiators because the cpu blocks and mobo blocks has one cycle to one of the radiators and the gfx blocks has another cycle to the other radiator..
         
        Also, if someone knows a good forum where I can post pictures of my setup and maybe get advice on what fittings I need to proceed to get things tighter, and other tips on how to "finish" the cooling. Because it look terrible now.
         
        Sorry for my bad English.
         
        Thanks
        Best Regards
        F
         
        #4
          TheWolf

          • Total Posts : 2609
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          Re:Memory Timings question. Wednesday, March 21, 2012 10:33 PM (permalink)
          If you leave the memory settings/speed as they are leave 7-7-7-20
          lower timing is better.
          Since your running at a lower speed than you memory is rated for, plus the fact you still have the timing set to auto.
          It will auto reduce/lower the memory timing to better suite the speed there running at.
           
          #5
            fasadglas

            • Total Posts : 9
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            Re:Memory Timings question. Thursday, March 22, 2012 2:35 AM (permalink)
            TheWolf


            If you leave the memory settings/speed as they are leave 7-7-7-20
            lower timing is better.
            Since your running at a lower speed than you memory is rated for, plus the fact you still have the timing set to auto.
            It will auto reduce/lower the memory timing to better suite the speed there running at.

             
            Ah ok thanks. Because I tried before to manually set the timings to what the stock value says, and that gave me problems.
             
            #6
              fasadglas

              • Total Posts : 9
              • Joined: 3/26/2011
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              Re:Memory Timings question. Thursday, March 22, 2012 3:23 AM (permalink)
              alan_a1


              Hi Fasadglas, it would be nicer if you provide more details about ur pc, what Bios/cpu do you use?

              Anyway, Im assuming that you don't overclock and your PC is running at stock speed. ur memory speed now is 1066Mhz, you can check in AIDA Menu :Motherboard --> Motherboard : and look for Effective clock.
              (This is ur memory speed)DDR technology allows the memory to process twice per clock cycle. real clock x 2 = 533Mhz x 2 = 1066Mhz


              here is how memory speed is calculated in SR2 Bios: 
              Memory Speed = bclock(CPU frequency setting) x System Memory Multiplier (Memory frequency)
              Memory Multiplier or Memory frequency as in SR2 Bios is quite tricky and not direct:
              800Mhz = x6
              1066Mhz = x8
              1333Mhz = x10

              In ur case at stock speed:bclock(133Mhz) X System Memory Multiplier (x8) = 1064Mhz (shows 1066Mhz)
              If you are not going to overclock, the maximum memory speed you can achieve is 1333Mhz by changing the memory Multiplier (Memory frequency) in the bios to x10.


              Overclocking Guides :
               
                (Read & understand this one first)


              Hi again, first of all I don't have the "Memory multiplier" option. Only thing that has the options you said is "CPU Uncore frequency multiplier" or something like that, when i set this to "x10 1333Mhz" and reboot.
              The bios says the current memory frequency is 800Mhz...
               
              So i tried changing the CPU0 and CPU1 DIMM Voltage from 1.5V to 1.65V (the stock volt), and rebooted (still 800Mhz).
               
              Then I tried to manually set the timings again to stock values (After changing the CPU uncore multiplier to x10 1333Mz, and CPU0 and CPU1 DIMM voltages to 1.65V) and rebooted, but it still says Current memory frequency is 800Mhz.
               
              So i changed everything to default as it was before, and the current memory frequency is 1066Mhz. Btw is the CPU0 and CPU1 DIMM Voltages the voltage settings for the ram or am I totally wrong?
               
              And what am I doing wrong here? Why doesn't the memory frequency go up to 1333Mhz?
               
              Thanks
              Best regards
              F
               
              #7

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