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Thread: Help w/ 3.2B Multi on EP43-DS3LR




  1. #1

    Default Help w/ 3.2B Multi on EP43-DS3LR

    Good evening fellow oc'ers. I'm trying to run 333 x 10 on the 333 Mhz strap with 3.2B Multiplier. My GA-EP43-DS3LR doesn't want to boot with 3.2B, but it will post with 2.4B at this speed. My RAM I'm using is OCZ Fatal1ty PC2-8500 1066 Mhz @ 6-7-7-20 2.0V. I have manually set my timings and voltage for my RAM and when I tried 333 x 10 with the 333 Mhz strap and 3.2B multi, it won't boot. What could be causing my board from posting when using the 333 Mhz strap and 3.2B multi?

    I was previously doing 266 x 12.5 on the 266 Mhz Strap with a multiplier of 4.00A. I wanted to see if trying out 333 x 10 on the 333 Mhz strap would yield more performance. I'm currently doing 333 x 10 on the 333 Mhz strap with a multi of 2.4B. My RAM is running stable at PC2-6400 800 Mhz @ 5-5-5-15 1.8V The only benchmark I have ran so far is Super Pi (probably isn't good to measure memory bandwidth), but it seems stable. I know every board varies as to what strap should be used, but does anyone have any suggestions?
    Last edited by RoscoP; 06-21-2009 at 12:34 PM.

  2. #2
    Chike is offline Senior Member
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    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    I had lots of issues overclocking at first, this post helped.

  3. #3

    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    Chike, thanks for the reply. I checked the post you gave me a link to. I changed my BIOS to have those recommended settings. I still can't boot with 3.2B multiplier. Also, I noticed that -

    CPU Termination ---------- 1.200V* ----- : [Auto] <--- set to the value to the left (Auto over-volts this too much when overclocking) Auto is OK if not overclocking
    CPU PLL ------------------ 1.500V* ----- : [Auto] <--- set to the value to the left (Auto over-volts this too much when overclocking) Auto is OK if not overclocking

    What is a good CPU Termination and CPU PLL for the overclock I am doing ? I notice the asterisk next to the 1.200V and 1.500V... are those recommended or the Auto settings?

    I was able to confirm that using the 333 Mhz strap does give real world performance gains over the 266 Mhz strap I was using. Crysis gives me a few more FPS in the Crysis Benchmark Tool 1.5 (cpu_benchmark & gpu_benchmark). I'm really wanting to run my RAM at 1066 Mhz via the 3.2B multiplier to see if I get any more gains.

    Any suggestions or input will be greatly appreciated. Thanks.

    /edit
    I realize that I have not changed my MCH Vcore from the default yet. I am running a 2x2GB OCZ PC2-8500 kit. Maybe I need to up the MCH Core to 1.200V? I don't see why I would be stable with 333x10 on the 333 Mhz strap with 2.4B, and not be able to post with 333x10 on the 333 Mhz strap with 3.2B, regardless of MCH core....
    Last edited by RoscoP; 06-21-2009 at 11:48 PM.

  4. #4
    Chike is offline Senior Member
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    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    All I know is that untill I have set the voltages as recomended in that post to the values on the left, and the PCI frequency to 100, I wasn't able to boot at 333Mhz and the 3.2 multiplier as well (I have E7200).
    I haven't tried to pin point wich of them did the trick, I changed them all as recomended.

    I'd suggest you set everything like in that post suggest, and then if you manage to boot and have stability, you can start eperimenting which is needed or not. You may need to raise vcore for 333Mhz, or maybe leave this value on auto (works for me with CPU EIST Function enabled.)

    From my personal eperience don't expect much performence gain (if at all) by raising memory speed. If memory bendwidth is your concern you will get it, but for normal use you won't notice a diference.

    DDR 1066 does not add much compared to DDR 800 at 266Mhz bus frequecy, but with 333Mhz you may have an extra 1,5GB/s or even more, and a little lower latnecy.

  5. #5
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    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    Different straps (MCH timings) do require different MCH voltages. It's just the same as RAM requiring 1.8V to do 5-5-5-18 but needing 2.1V to go 4-4-4-12. Increase MCH core to at least 1.2V with 4Gb of RAM.

    To be honest, I'm not liking your RAM much. 6-7-7-20 for 1066.... makes me wonder if OCZ got the chips out of the reject bin. Sounds like it's very old RAM released when 1066 was new, and is probably average quality DDR800 with a timing and voltage increase. I'm not being disrespectful about your components, just warning you to bear in mind, thet it may be the cause of your issues. The primary reason I avoid OCZ RAM is because of the half-way ranges they supply with unconventional timings like yours and 5-6-6-18 etc. Just seems that they're using anything they can find and adjusting timings to suit the quality of the the RAM rather than specifying RAM timings they want and finding IC's that deliver that speed.

    The only answer as to what CPU termination and PLL voltages you should use is "the ones that are stable". There is no formula, no way to guess or calculate what voltages you need unfortunately.

    Don't feel that you need to stick to the "right strap for the FSB" either. I'm perfectly stable with a 411 FSB and 2.66C RAM multi.
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  6. #6

    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    Quote Originally Posted by Psycho101 View Post
    Different straps (MCH timings) do require different MCH voltages. It's just the same as RAM requiring 1.8V to do 5-5-5-18 but needing 2.1V to go 4-4-4-12. Increase MCH core to at least 1.2V with 4Gb of RAM.

    To be honest, I'm not liking your RAM much. 6-7-7-20 for 1066.... makes me wonder if OCZ got the chips out of the reject bin. Sounds like it's very old RAM released when 1066 was new, and is probably average quality DDR800 with a timing and voltage increase. I'm not being disrespectful about your components, just warning you to bear in mind, thet it may be the cause of your issues. The primary reason I avoid OCZ RAM is because of the half-way ranges they supply with unconventional timings like yours and 5-6-6-18 etc. Just seems that they're using anything they can find and adjusting timings to suit the quality of the the RAM rather than specifying RAM timings they want and finding IC's that deliver that speed.

    The only answer as to what CPU termination and PLL voltages you should use is "the ones that are stable". There is no formula, no way to guess or calculate what voltages you need unfortunately.

    Don't feel that you need to stick to the "right strap for the FSB" either. I'm perfectly stable with a 411 FSB and 2.66C RAM multi.

    Hey, don't feel bad about letting me know the truth on my RAM. I made the mistake when I ordered it :-( If I could order again I would order DDR2-800 that does 4-4-4-12. I got suckered into ordering this "Fatal1ty" OCZ RAM because it had a nice combo deal from newegg. Prior to my current setup I was stuck on a Socket A rig that I had since 2003. I used to have a mobile Barton 2500+ in an Abit NF7. I am glad to be learning how to OC newer hardware. Anyways, I'd like to not learn from mistakes, but I do learn "better" from mistakes.

    I was able to get 3.2B multi whenever I upped the MCH Vcore to 1.2V. I have not seen any performance increases in games though. If I do not see any real world difference between my multi @ 3.2B (RAM @ 1066 6-7-7-20 2.0V) and 2.4B (RAM @ 800 5-5-515 1.8V) should I run the 2.4B multi and keep my RAM at 1.8V to give it a longer life?

    Does anyone think my GA-EP43-DSL3LR could do the 400 Mhz strap with stock cooling on the Northbridge? I havn't applied AS5 to the Northbridge or anything. The board's specs says it can do 1600 OC... maybe its worth a shot? Can the E5200 even handle a 400 Mhz strap?

    Thanks for the info Chike & Psycho :-)

  7. #7
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    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    If you'd like to continue running at DDR-800, I'm sure the performance would be almost equal to 1066 due to the not so good timings you'd have to use to get 1066.

    FSB strap and FSB speed are different. A FSB strap is simply a set of optimised timings, similar to RAM timings (wait states) applied to the northbridge to optimize performance for the FSB speed indicated in the straps name. An actual FSB increase is the main stay of overclocking, as you know, and it's this rather than strap settings that will overclock the system.

    I'm sure your board would be more than happy at a 400MHz bus speed, but I'm not 100% sure your CPU would be OK there. You may be able to get it stable, but it could be difficult. I'd recommend using a 300MHz FSB and a multiplier of 12 to give 3.6GHz. Setting a 2.66 RAM multiplier will bring you up to DDR-800. I'd estimate fromwhat I've seen that you'd need to give the CPU about it's max rated voltage of 1.3625V to be stable.

    My favourite e-tailer (UK based) sells E5200 systems pre overclocked to 3.75GHz at 1.3625V on a Gigabyte GA-EP43-S3L. It does have a good CPU cooler fitted, the Scythe Kama Angle, and according to the review in Custom PC magazine, runs at a near perfect 67c at load. Aslong as your heatsink is up to it, you should get similar results. Notrthbridge heat shouldn't be an issue. Use the least amount of northbridge voltage as possible to be stable, and as long as you have good case airflow, you'll be fine.
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  8. #8

    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    Do you typically expect to see a gain in overall performance when using a higher strap? Sorry to ask such a simple question...

  9. #9
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    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    The EP43 mobo will probably top out at about 420Mhz cpu host frequency.
    At this speed you'll want to use 2.00D or 2.00B System memory multipliers to run your memory at slightly above 800MHz with tighter memory timings.
    The 2.00B MCH strap will give you a bit more memory performance than the 2.00D strap.
    You might find it easier to get your system stable if you first try the 2.00D strap.

    We can help you maximize your memory's performance with some additional bios settings once your system is stable.
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  10. #10

    Default Re: Help w/ 3.2B Multi on EP43-DS3LR

    Quote Originally Posted by profJim View Post
    The EP43 mobo will probably top out at about 420Mhz cpu host frequency.
    At this speed you'll want to use 2.00D or 2.00B System memory multipliers to run your memory at slightly above 800MHz with tighter memory timings.
    The 2.00B MCH strap will give you a bit more memory performance than the 2.00D strap.
    You might find it easier to get your system stable if you first try the 2.00D strap.

    We can help you maximize your memory's performance with some additional bios settings once your system is stable.
    I tried to do 400 Mhz strap w/ 2.00D multi (400x8 = 3.2Ghz CPU, 400x2.00 = 800 Mhz RAM) to achieve the 1:1 FSB:DRAM ratio, but my board won't post. I also tried the 2.66D multi on the 400 Mhz strap (300 x 11 = 3333Mhz CPU, 300 x 2.66 = 800 Mhz RAM) and I was unable to get it to post.

    I am afraid my E5200 just won't work on the 400 Mhz strap. I've heard about the E5XXX chips only being able to max out at about 330-340 FSB. Is this true? I'm sure my EP43 can handle the 400 Mhz strap, I think it's the E5200 stopping it from posting. Can anyone else confirm this? Is it possible that I need to up the MCH Vcore to 1.300V to achieve the 400 Mhz strap? I really don't want to put anymore vcore to my northbridge...

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