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Thread: GA-EP35C-DS3R & (2x2gb) pc12800 DDR3 1600Mhz




  1. #1
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    Default GA-EP35C-DS3R & (2x2gb) pc12800 DDR3 1600Mhz

    Hello people .

    The question is simple , did any one installed PC12800 1600MHZ memory,
    on the EP35C-DS3R or any other P35 based board and worked well ?

    The long story in sort , I need better memory modules.
    Currently I found better pricing and timings like 7-7-7-20,
    at the 1600MHZ memory than the 1333 , that is the maximum supported speed of this motherboard.

    And so I do wonder , if it is possible to work ?

    And if I get further .... is it possible the 1600MHZ memory at the 1333MHZ to work at cas 6 latency ?



    .
    Last edited by Kiriakos; 11-23-2010 at 07:10 PM.
    EP35C-DS3R F4 | Q6600 | ProlimaTech Armageddon
    HYPER-X KHX1600C8D3T1K2 /4GX
    PC3-12800 1600MHz (1066 CL 6-6-6-21)
    ATI HD 5770 Vapor - X| X-Fi music |RAID-1 WD Raptors
    HIPER HPU-4M780-PE

    XP PRO 32bit

  2. #2
    kick's Avatar
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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    1.
    edit.

    nm I just noticed later in your post that the mbrd is a C hybrid version.

    No idea on DDR3 memory and p35+p45 chipsets ,there shouldnt be any problem underclocking memory tho even if the board wont allow it to run at 1600 mhz.

    If you are sticking with the 32 bit OS only 3.3G of memory will be "used"
    Last edited by kick; 11-23-2010 at 05:04 PM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    Hello .

    The "C hybrid version " stands for the fact that it supports DDR II + III ?

    Thanks for the tip about the 32 bit OS limit.

    My only practical problem with the memory selection , are that almost at the same price ,
    I can find 2X1GB DDRII 1066 7-7-7-20 modules,
    ......... or 2X2GB DDRIII pc12800 1600 7-7-7-20

    Does the DDRIII runs cooler, or using less energy , than the DDR II at those speeds ?
    EP35C-DS3R F4 | Q6600 | ProlimaTech Armageddon
    HYPER-X KHX1600C8D3T1K2 /4GX
    PC3-12800 1600MHz (1066 CL 6-6-6-21)
    ATI HD 5770 Vapor - X| X-Fi music |RAID-1 WD Raptors
    HIPER HPU-4M780-PE

    XP PRO 32bit

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    kick's Avatar
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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    Someone who runs ddr3 memory could answer you better but

    1.DDR3 memory can run at higher speeds so timings arent as tight like 7-7-7-20 altho i thought they ran even looser like cl8 or 9.
    DDR2 runs at lower speed but usually has tighter timings like 5-5-5-15 for 1066 or at worst 6-6-6-18 for 1066,
    The 2x 1 G DRR2 memory you mention sounds terrible if it needs those timings.

    The DDR3 memory may or may not run at 1333mhz at 6-6-6-18 but even if you have to run it at 7-7-7-20 it sounds ok.
    My board is supposed to be able to run DDR2 memory at 1333mhz+ .. haha finding sticks like that is hard,maybe gskill ripjaws but i dont think any 1400mhz ddr2 is gonna appear.
    DDR2 memory now seems more expensive per G than DDR3 reversing the situation when DDR3 first came out.
    You cant mix the ddr2 and ddr3 so you only have 2 slots for ddr2 or 2 slots for ddr3,but thats all you really need and right now a "C" board seems like it was a good buy.
    I wouldnt buy new ddr2 memory now,its too expensive and the sticks I have are ok for me.If I had the option of putting in DDR3 I might tho .

    As long as the memory works ok with your board DDR3 2x2 G looks like the way to go.
    4G or even 3.3 is better than 2G.

    Also you may be able to use the DDR3 again if you decide to upgrade sometime.

    On the power consumption and temp there must be reviews of the memory you are thinking of buying,on the web.
    DDR3 memory uses lower voltages like 1.5-1.6V.DDR2 minimum is supposed to be 1.8V ,so I would expect it to use less power/generate less heat per G.
    Last edited by kick; 11-24-2010 at 12:56 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  5. #5
    Lsdmeasap's Avatar
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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    Yes, DDR3 runs off of less voltage, so it would consume less energy if that is what you are concerned with.

    1333Mhz DDR3 is the better option, unless you can get 1600Mhz for a similar price. I say this because your board probably can't run 1600Mhz memory, so it would be better to go with 1333Mhz.

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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    The truth are that I am very confused about the " bond " of the Q6600 + P35 + DDR3
    After reading for hours or days ...lots of info.

    My understanding are , that I can Use the Q6600 at stock clocks and set only the memory to the max supported setting,
    that is the DDR3 at 1333Mhz Bus ( with true bus clock the 667 )

    DDR3 SDRAM - Wikipedia, the free encyclopedia

    Currently I am skeptic because I have a bit low memory bandwidth scores with the DDRII 533
    Everest ..
    Read:5164
    Write :4817
    Copy:4420
    Mem latency :97.8ns

    And I have the feeling , that if I managed to get about 8000 as memory score I would had get the maximum possible performance at stock speeds .

    Luckily the Everest 4.60 includes the score tests, of another EP35C-DS3R with DDR3 1066 8-8-8-20 .
    This system gets an score at memory read 7079 and Write 4860 ..

    I bet that with better DDR 3 like 7-7-7-20 I could get higher than that.

    The point is that I have no reference data about an similar system , running DDR3 1333 7-7-7-20 , so to know what to expect !!




    .
    Last edited by Kiriakos; 12-02-2010 at 06:05 AM.
    EP35C-DS3R F4 | Q6600 | ProlimaTech Armageddon
    HYPER-X KHX1600C8D3T1K2 /4GX
    PC3-12800 1600MHz (1066 CL 6-6-6-21)
    ATI HD 5770 Vapor - X| X-Fi music |RAID-1 WD Raptors
    HIPER HPU-4M780-PE

    XP PRO 32bit

  7. #7
    Lsdmeasap's Avatar
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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    If you leave the Q6600 at stock FSB and only use a 266 or 333 based memory multiplier, the largest multiplier is 4.00 so you can only run 1066Mhz unless you raise the FSB to 333 on the CPU

  8. #8
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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    I think lsd is saying go for the DDR3 1600mhz stuff,since you say its cheaper for you.
    The memory should be able to run at the 1600 timings at 1333mhz ,if it will run at tighter timings at 1333 you will probably have to test yourself .
    Your the first poster ive seen with a ddr3 capable p35 board so I wouldnt hold my breath waiting for replies from other p35 DDR3 users.

    edit
    ahh ok I thought there were seperate ddr2 and ddr3 multipliers.. yeh to get the 1333 speed on memory u would need the cpu ref at 333mhz ,but the board is capable of 1333mhz fsb yes? so

    If you want to run the cpu at stock speed its a case of turning down the cpu multiplier on the cpu ref speed of 333.

    The memory you have now wont,or peobably wont run at that speed because the minimum ddr2 speed would be 667 or actually 666 ie 333x2.

    Yeh youre right that bandwith and memory ns is terrible.

    It should improve a lot.
    Last edited by kick; 11-24-2010 at 01:23 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    Quote Originally Posted by Lsdmeasap View Post
    If you leave the Q6600 at stock FSB and only use a 266 or 333 based memory multiplier, the largest multiplier is 4.00 so you can only run 1066Mhz unless you raise the FSB to 333 on the CPU
    This goes for DDRII and DDRIII as same rule ?

    Or better, lets just forget the DDRII.

    Lets talk only for the best memory configuration for the Q6600 stock ,
    and the DDR3 best supported by the motherboard ( faster ), at stock speed.
    EP35C-DS3R F4 | Q6600 | ProlimaTech Armageddon
    HYPER-X KHX1600C8D3T1K2 /4GX
    PC3-12800 1600MHz (1066 CL 6-6-6-21)
    ATI HD 5770 Vapor - X| X-Fi music |RAID-1 WD Raptors
    HIPER HPU-4M780-PE

    XP PRO 32bit

  10. #10
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    Default Re: Ga-ep35-ds3r & (2x2gb) pc12800 1600mhz

    Ya the memory multi is based on the chipset, so the same for either.

    I'd get the 1600 as kick mentioned if you can afford it, it will underclock to better timings at 1333 for sure, and you'll have better memory for future upgrades too.

    I would not buy a 1066Mhz DDR2 kit rated with those timings, those are terrible as mentioned previously :)

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