Running Win10 by Intel s478 CPU Now And Maybe Older CPU In The Future

Discussion in 'Windows 10' started by wytiwx, Apr 7, 2020.

  1. wytiwx

    wytiwx MDL Novice

    Feb 15, 2020
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    no study on mobile platform yet, I think that will have many differences.
     
  2. Mahdi1944

    Mahdi1944 MDL Junior Member

    Aug 13, 2012
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  3. esasoft

    esasoft MDL Novice

    Aug 9, 2012
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    #63 esasoft, Jul 12, 2020
    Last edited: Jul 12, 2020
    It's not as good as you think.
    Yes, it supports all S-478 processors, even mobile ones. But it's major flaw is that it can support only up to 95W TDP CPUs.
    Without some manual rework it's power phases will burn out in about 10-15 minutes of full load if you install any Prescott ~2.7 GHz or higher CPU.
    To use all top-of-the-line 478 CPUs with Biostar G31-M4 you must do the following:
    1. Replace all the capacitors in power phases with solid state ones (use the same voltage but slightly higher capacity);
    2. Attach a little (or some custom made big) heat sinks to ALL transistors in power phases using a thermal glue (be careful not to shorten their pins !) and add some active cooling to them.
    After that Biostar G31-M4 will work good with all 478 CPUs.

    By the way - despite Biostar G31-M4 is based on G31 chipset that supports up to 8 Gb of RAM, it's BIOS will not allow to use more than 4 Gb, at least with x86 CPUs (haven't test it with x64 CPU).
    It's a BIOS limitation (not hardware). I think that some BIOS patch can solve this problem.
     
  4. wytiwx

    wytiwx MDL Novice

    Feb 15, 2020
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    I saw someone used no-mod G31-M4 running P4 3.4EE fine.

    I tested x86 and x64 s478 cpu on G41, P35 and P45 platform by CPU adapter, system crashed at POST screen or just got 3.X GB available if RAM is 4GB+. Only one no-name s478 G41 board can see 4GB+ RAM, but that board failed to load x64 Win7 OS, no matter with x64 s478 CPU.

    I really hope that it is some BIOS issues rather than HW problems.
     
  5. esasoft

    esasoft MDL Novice

    Aug 9, 2012
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    I really DON'T RECOMMEND to use unmodified G31-M4 with Prescott P-4 CPUs !!! You WILL burn it ! Believe me, I know what I'm talking about.
    G31-M4 sees 4Gb of RAM only if 8Gb is installed (works fine, without problems). If 4 Gb is installed, G31-M4 sees only ~3.7 Gb (works fine too), no matter what you use - 2x2 GB or 1x4 Gb RAM modules. So I think that this is a software problem (bugs in BIOS).
    Did you do a pinmod on the CPU adapter (for correct VCC adjusting) ?
     
  6. wytiwx

    wytiwx MDL Novice

    Feb 15, 2020
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    I think G41, P35, P45 mobo separate 4GB+ memory into two parts: base memory + extend memory. Max base memory is 3072MB, extend memory can be up to 5000MB, that's why we can see 8GB memory if we used LGA775 CPU, and extend memory may be involved in memory remapping of BIOS. But for s478 CPU, mobo BIOS can not do the same routine in memory recognizing, that's why we only get 3.XGB instead of 4GB+ even we installed 8GB, sometime system crashed at boot up.

    As to 478-775 CPU adapter, no VCC mod on it, because my mobo VRM contain both VRD10.1 and VRD11.
     
  7. wytiwx

    wytiwx MDL Novice

    Feb 15, 2020
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    I think Athlon 64 CPU has NX, SSE2, PAE, right? If so, it would not be so hard to run Win10 x64.
     
  8. esasoft

    esasoft MDL Novice

    Aug 9, 2012
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    What pinmod ? Please tell us about it.
     
  9. esasoft

    esasoft MDL Novice

    Aug 9, 2012
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    No. As of my expirience, when I use my G31-M4 with 8Gb of RAM installed, the BIOS (and OS) sees 4Gb (not 3.x Gb), and system works good and stable.
     
  10. wytiwx

    wytiwx MDL Novice

    Feb 15, 2020
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    Well, not all mobo will do the same, I just talked about my boards, and I have never used G31-M4 yet.
     
  11. wytiwx

    wytiwx MDL Novice

    Feb 15, 2020
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    I think we can decrease CPU Vcore by pinmod, so as to make CPU power consumption lower and keep mobo safe.
     
  12. esasoft

    esasoft MDL Novice

    Aug 9, 2012
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    Please tell us how did you overclock the CPU on this board ? What software did you use ?
    I'm asking about it because I know that BIOS on this motherboard doesn't allow to do overclocking.
     
  13. weest044

    weest044 MDL Novice

    Jun 24, 2016
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  14. weest044

    weest044 MDL Novice

    Jun 24, 2016
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    It wouild be very great. I have Asus K8N-DL mobo, it's dual 940 socket mobo from 2005, it can carry two dual core cpu's at 2.8GHz with overclock feature and 24GB of total RAM. Would be nice to see Win10 x64 on it.
     
  15. Carlos Detweiller

    Carlos Detweiller MDL Spinning Tortoise

    Dec 21, 2012
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    The mentioned CPU feats should enable Windows 8.1/10 32bit to run. Windows 8.1/10 64bit addtionally requires 64bit mode, CMPXCHG16b, PrefetchW and LAHF/SAHF support.
     
  16. max1024

    max1024 MDL Novice

    Jul 13, 2019
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    I found Biostar G31-M4 (S478 + G31) Validation with Win7x64 valid.x86.fr/uz9ru6 is an interesting board, but on the correct memory sticks for Intel, 2x4GB, the system says that 3 GB out of 8 is available. I have not yet deeply immersed myself in this question, I will ask here is it possible to see all 8 GB?
     
  17. max1024

    max1024 MDL Novice

    Jul 13, 2019
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    There just a picture below.
     
  18. esasoft

    esasoft MDL Novice

    Aug 9, 2012
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    Any news or progress ?