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    P870TM1-G power draw with stock 330w

    Discussion in 'Sager and Clevo' started by almostoast, Apr 3, 2018.

  1. almostoast

    almostoast Notebook Guru

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    I've ordered a p870tm1-g with the prema bios and have seen a few examples of the power draw during benchmark exceeding the 330w rated for the stock power brick.
    should i be looking into the eurocom 780w power brick to get the best performance from this system?
     
  2. Danishblunt

    Danishblunt Guest

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    Kinda depends on OC and setup. I don't think you'll need moer than 330W when not modding custom vBIOS and doing some serious overclock on the CPU.
     
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  3. Prostar Computer

    Prostar Computer Company Representative

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    The 330W brick should work for a single GPU config at stock (or mostly stock) settings.
     
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  4. Meaker@Sager

    Meaker@Sager Company Representative

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    How did you measure the power consumption?
     
  5. almostoast

    almostoast Notebook Guru

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    I didn't measure anything @Meaker@Sager .

    I seent it on youtube!
     
  6. Falkentyne

    Falkentyne Notebook Prophet

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    A 6 core 8700K can easily exceed 100W on any 8 threaded 4.5 ghz benchmark, and that's a -tiny- overclock. Then you have a 200W GPU, and that doesn't leave much power left for the rest of the system. If you intend to overclock and push high clocks+gaming, you need a larger PSU.
     
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  7. poprostujakub

    poprostujakub Notebook Consultant

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    330W between the brick and laptop or 330W from the wall? All machines in our world are subject to the laws of physics - so they have power conversion efficiency below 100%. For high performance AC / DC converters, such as laptop PSU, the efficiency can reach 88-92% at full load, so power draw from wall can reach 370W and this is normal.
     
  8. Meaker@Sager

    Meaker@Sager Company Representative

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    Exactly, plus the Delta bricks are reliable at their rating.
     
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  9. Hterag

    Hterag Notebook Enthusiast

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    Running a single GTX 1080 in my P870TM(soon to be 1-G) and an 8086k at 4.5GHz stock voltage. Highest I've seen from the wall is ~340W so far. Even at 90% efficiency that'd be 306W coming out of it.

    I got excited recently because I've found a seller that sells essentially a smaller version of the Eurocom adapter rated for 560W with one fan instead of two, it's a bit longer but not as tall and a bit narrower than the stock 330W brick. I'm very close to getting one for myself but I want to see how much power my system will draw with dual GTX 1080s first. If it's above that then I'll have to go with 2x 330W because I have no way to get hold of the Eurocom one.
     
    Last edited: Sep 17, 2018
  10. Falkentyne

    Falkentyne Notebook Prophet

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    Two 1080's=400W..
    The 8086K will draw 150W maximum (unless you try to run FMA3 small FFT at 5 ghz @ 1.4v, please don't do that), so you are going to be very close if you are putting 120W through the CPU, leaving 40W for the rest of the system. The normal SLI system comes with 330W * 2 dongle right?

    You're going to overdraw that PSU if you ever upgrade to a 9900K. That's for sure. I would not try to bargain basement yourself now and then find out you need to buy another PSU in the future. Better to buy what you know you will need for the forseeable future and do it right at the beginning. I'd get the Eurocom one and relax in peace. The 560W one would be nice for a single 1080 + 9900K system (since you can pull 400W easily with an overclocked 9900K + video card).
     
  11. Papusan

    Papusan Jokebook's Sucks! Dont waste your $$$ on Filthy

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    Never heard about Eurocom adapter rated for 560W. But 780W AC adapter. And you will need 2x330w for 1080 Sli.

    Edit. The single 330w will give 330w pure power. Not 306w.
     
    Last edited: Sep 17, 2018
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  12. Hterag

    Hterag Notebook Enthusiast

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    I already said the Eurocom one isn't an option for me because I can't get it but I already have two 330W bricks from other systems.

    Sorry, perhaps I wasn't clear. It's not a Eurocom 560W, it's another brand but I think it's the same OEM.

    The single 330W supplies whatever is needed up to the point that it can't (like any PSU). I'm not saying it only supplies 306W max, I'm saying the maximum I actually read from a meter on the socket during my testing was about 340W (300-315W in 3DMark Time Spy test), which means even at 90% efficiency it was putting about 306W into the machine (out of a rated max of 330W). In other words, it was fine for one 330W.

    It actually came with two 230W PSUs and I don't know why, I'm not using them right now.
     
    Last edited: Sep 18, 2018
  13. Meaker@Sager

    Meaker@Sager Company Representative

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    That sounds about right, they give two supplies to increase low load efficiency (it only draws from one at low loads and a 240W is more efficient) and give headroom just in case.
     
  14. lsflp

    lsflp Notebook Geek

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    can you tell me whats seller o where I can buy one?