AM4 B350 / X370 VRM table

Discussion in 'AMD Processors' started by CAD4466HK, Mar 27, 2017.

  1. CAD4466HK

    CAD4466HK [H]ard|Gawd

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    VRM Table

     
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  2. Lordken

    Lordken n00b

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    Well I'm a bit confused, he states that only ASUS Prime B350-Plus has 4 phases but from table it looks like all boards have 4 as minimum , few has 6 and some Asrock 3x2 (though not sure whats difference between 6 and 3x2)
    So looking at that table I would assume that VRMs are not that big of deal on AM4 as they were on AM3? As even ROG and Aorus appears to have only 4 phases, BUT looking at ROG picture I can see 12 vrm chokes (or whatever it is called) and I was in the impression that this reflect to number of phases used by board...
     
  3. Formula.350

    Formula.350 [H]ard|Gawd

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    3x2 would no doubt mean 3 phases, doubled (ie: split) to create 6. It's sorta like taking a garden hose and putting a splitter valve on the end and running two more hoses at the same time.

    They're still important on Ryzen, just that it's a much more efficient design, that now less are actually needed.

    What I'm curious about is whether the non-APU Ryzens utilize all 8 phases, or if two of them just sit dormant and we're really only using 6. As, using my Titanium as an example, it's a 6+2+2, where if an APU was being run the 6 is CPU, the +2 is the iGPU and the last+2 is CPU-NB (memory controller). So I'm hoping when the chip is CPU-only, it's 8+2
     
  4. LigTasm

    LigTasm [H]ardness Supreme

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    I watched a video on this, the iGPU phases do other things on the CPU as well, but will also provide the power for the graphics component when present. I can't remember the specifics of it but they are active even with no integrated unit in the chip.
     
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  5. Formula.350

    Formula.350 [H]ard|Gawd

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    Awesome, I'm glad to hear that! Thanks :)
     
  6. Sodapopjones

    Sodapopjones [H]ard|Gawd

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    I still haven't gotten a clear concise answer on the Tomahawk B350 VRM's, its a 50/50 on whether or not the VRMS can hold the temps for a 4ghz clock speed on the CPU or not... I'm trying to be cheap on the first board I buy, until things get sorted.
     
  7. LigTasm

    LigTasm [H]ardness Supreme

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    My Asus B350 Prime which has a similar 4 phase design had no problem with 4ghz. The little bitty heatsinks didn't even get warm. Seems to be more on the CPU lottery and CPU cooling.
     
  8. Sodapopjones

    Sodapopjones [H]ard|Gawd

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    Interesting, as I had heard through overclocking.net that B350 boards are worthless due to VRM temps....
     
  9. LigTasm

    LigTasm [H]ardness Supreme

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    Well, I guess if you're pushing it hard and looking for that 4.1+ with high clocked RAM it won't work out well, my board only gets .200V max offset, no manual voltage.
     
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  10. CAD4466HK

    CAD4466HK [H]ard|Gawd

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    I've seen a lot of peeps running 4.0GHz on B350 mobos, including a mod Markfw @ Anandtech who's been running BOINC @ 100% since early March.
    Some are putting sinks on the VRM's w/ 40mm fans as some come naked. The ASRock AB350 Pro4 seems to be a popular choice.
     
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  11. DuronBurgerMan

    DuronBurgerMan [H]ard|Gawd

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  12. Sodapopjones

    Sodapopjones [H]ard|Gawd

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    The Tomahawk has enough fan headers to run extra fans anyway, solid idea might not look clean but hey, the board is only $95 atm.
     
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  13. CAD4466HK

    CAD4466HK [H]ard|Gawd

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    That's the [H]ard way of doing things. :D
     
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