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    Ram volt mod, anyone done it?

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by moral hazard, Jul 9, 2010.

  1. moral hazard

    moral hazard Notebook Nobel Laureate

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    I have seen ram volt mods done on desktop motherboards, but never on a notebook.

    Has anyone tried it?
     
    moral hazard, Jul 9, 2010
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  2. G73Guy

    G73Guy Notebook Consultant

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    No I have not. Have you seen the app that lets you change some things? I forgot the name on my other notebook.
     
    G73Guy, Jul 9, 2010
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  3. moral hazard

    moral hazard Notebook Nobel Laureate

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    You mean thaiphoon burner?

    Because my ram has WP enabled on the SPD EEPROM and I can't flash a new spd.

    Hardware mod is my only option to increase the ran voltage.
     
    moral hazard, Jul 9, 2010
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  4. G73Guy

    G73Guy Notebook Consultant

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    You need a BIOS? I have never heard of on a notebook. The app I was talking about would let me change clocks/L2 but without voltage support kind of dangerous.
     
    G73Guy, Jul 9, 2010
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  5. moral hazard

    moral hazard Notebook Nobel Laureate

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    moral hazard, Jul 9, 2010
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  6. darnok44

    darnok44 Notebook Consultant

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    Actually I have done vmod for sodimm in my laptop. In what laptop You wanne do this - in your msi??
     
    darnok44, Jul 9, 2010
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  7. moral hazard

    moral hazard Notebook Nobel Laureate

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    Yes my msi, did you mod the sodimm or your motherboard?
     
    moral hazard, Jul 9, 2010
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  8. darnok44

    darnok44 Notebook Consultant

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    I moded voltage regulator on motherboard soldering proper potenciometer instead one resistor what give me ability to regulate voltage from stock 1.8V to 2 -2.2V or something like that. If You look here http://laptop-schematics.com/view/2420/ You will find schematic of your laptop. Its not very clear but You can see that for Vdimm is responsible TPS51124 regulator.
     
    darnok44, Jul 9, 2010
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  9. moral hazard

    moral hazard Notebook Nobel Laureate

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    moral hazard, Jul 9, 2010
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  10. darnok44

    darnok44 Notebook Consultant

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    I did it few months back and I might not remember it. But it will be probably output VO2 1.5 V/10 A on the schematic on left side. In this output circuit You have feadback loop connecting output with pin5 VFB2. Thera 2 resistors coming from this pin creating divider. What I remember that lowering resistans one of it was decrising Vdimm and lowering second one was increasing Vdimm. I did it in that way that i found point on the motherboard where i coud measure Vdimm and shade one resistor with pencile (pencile mod) and looked on multimeter and did it that same with second one. But You have to be careful with shadering resistors. In my case resistance 12.9kohm is giving default V=1.8v and for example 11kohm is giving 2.15v. About how much that give me headroom for ram I dont remember exactly. Wasnt that so spectacular improvement what I expected but it give me some room.
     
    darnok44, Jul 10, 2010
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