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Thread: New EP45-UD3P Build.




  1. #1
    FlyingHorse's Avatar
    FlyingHorse is offline Junior Member
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    Question New EP45-UD3P Build.

    I will soon start a new build with a GA-EP45-UD3P motherboard and Q9650 cpu. With my current system (EVGA 680i & Q6600) I am running 8GB (4x2GB) of OCZ Reaper HPC Edition DDR2 800.

    One of the problems with my 680i was the fact that by using all 4 memory slots I was limited in how fast I could clock my RAM hence the reason for using only DDR2 800 modules.

    My first set of questions are: does the EP45-UD3P have this same limitation when using all 4 slots? If I purchase something along the lines of 8GB's (4 x 2GB) of G.SKILL DDR2 1100 (seen here) will I be wasting my money? Like many others I am hoping to get the CPU to 4GHz.

    My second pair of questions relate to the G.SKILL RAM from above. Is there a good chance that it will be compatible with the EP45-UD3P? Should I consider a different brand or model?

    All input would be appreciated.
    Best regards,
    FlyingHorse

    GA-EP45-UD3P Q9650 450x9@2.40B BIOS: F10
    G.Skill F2-8800CL5Q-8GBPI (2GBx4) DDR2-1100
    EVGA 285GTX SSC Graphics + HP ZR24w + LG 32LH40
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  2. #2
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: New EP45-UD3P Build.

    Few memory manufacturers will guarantee that 4x2GB of memory will run at its full rated speed, check it out on their websites, forums, or contact their tech support people. G.Skill offers a 4x2GB DDR2-800 matched set and they state on the product page that there is no guarantee that running more than 2x2GB of memory will run at its rated speed. Most DDR2-1066 will run at 1000MHz speeds or higher, it all depends on the luck of the draw. With 1100MHz modules you will probably be fine.

    G.Skill memory is probably the most popular memory on our forum and I've seen very few problems with their DDR2 modules, probably far less on a percentage basis compared with other major brands of high performance memory.

    For 4.0GHz, your cpu speed will need to be at 445MHz, so you'll need your memory to run at 890MHz or higher. In some cases you might have to use somewhat looser memory timings than the rated 5-5-5-15 speeds. If you're lucky, you might be able to run your memory at 1068MHz (2.40 x 445). You might find that you get better overall performance with tighter memory timings at 890MHz instead of somewhat looser timings at higher speeds.

    Good luck with your new build.

    edit: The G.Skill website lists an 8GB (4x2GB) set, p/n F2-8800CL5Q-8GBPI
    Last edited by profJim; 07-07-2009 at 09:25 AM.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
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    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
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    .


  3. #3
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    Default Re: New EP45-UD3P Build.

    I have OCZ 'Reaper' 4x2gb 1066MHz,
    and I had a heck of a time overclocking this MB,
    and keeping the memory at it's rated bandwidth.

    I tried just about everything with a 9.5x400@2.66D BIOS config,
    and nothing would work. I suspect that if I pushed the MCH Core voltage high enough, it might have worked, however. (I did not consider anything over 1.32v)

    I think that to run all four slots at MHz of 1066 or greater, with an FSB 400 or greater; the MCH is always going to be the killer. If you're serious about it, maybe if you added supplemental cooling it might be viable?

    On the flip-side, once I conceded that I need to under-clock my DRAM; overclocking this MB became much easier. I was able to hit 9.5x433@2.00D without too much effort; and will run 9.5x422@2.00D 24/7.
    case: Gigabyte 'Triton 180'
    power: Corsair 'HX-620'
    motherboard: Gigabyte 'GA-EP45-UD3P' (rev.1.1, F9)
    cpu: Intel 'e8500' (E0)
    cooling: Xigmatek 'HDT-S1283'
    memory: OCZ 'Reaper' 4x2gb (OCZ2RPR10664GK)
    storage: Western Digital 'Black' (500gb)
    video: EVGA 'GeForce' GTX-260
    display: Samsung 'SyncMaster' 2333sw

  4. #4
    FlyingHorse's Avatar
    FlyingHorse is offline Junior Member
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    Default Re: New EP45-UD3P Build.

    Quote Originally Posted by profJim View Post
    edit: The G.Skill website lists an 8GB (4x2GB) set, p/n F2-8800CL5Q-8GBPI
    Thanks for that little tidbit. I've contacted G.Skill about both kits. I'll pass along what I find out.

    @corlay
    Thanks for the info. I feel more confident that my own OCZ Reapers will work if it comes down to it.
    Best regards,
    FlyingHorse

    GA-EP45-UD3P Q9650 450x9@2.40B BIOS: F10
    G.Skill F2-8800CL5Q-8GBPI (2GBx4) DDR2-1100
    EVGA 285GTX SSC Graphics + HP ZR24w + LG 32LH40
    HighPoint 2640x4 4-Port SAS RAID Controller
    Creative X-Fi ExtremeGamer Audio (PCI)
    Hauppauge WinTV-HVR 2250 Dual Digital Tuners
    2 WD 150GB Raptors RAID 0
    1 2TB Caviar Black

    3 1TB Caviar Blacks
    2 WD 500GB, 2 640GB, and 2 1TB Caviars in Icy Dock Mobile Racks
    LG GH22NS30 DVD Burner
    Lite-On iHOS104-08 Blu-ray Reader
    Corsair HX Series 1KW PSU
    Cooler Master ATCS 840 Full Tower
    Windows 8 Pro with Media Center

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