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Thread: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

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    Question Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    Yes kind folks it's this thread again! I am in a little bit of a hurry so I'll summarise:

    I calculated my max system power draw at somewhere around 650-660w (with 100w headroom and mobo power consumption - ?)

    EDIT: It seems that this may well be complete overkill. There's some question marks around this calculation. Later on I list actual components of my system|desktop.

    I need a tier 1 850w (?) or 1000w PSU from the UK or Western Europe. I would prefer to use Scan, Ebay, or Amazon. It appears I have a ground loop problem with my current ageing 1000w PSU. Though that might not be the problem I'm experiencing some instability. Yesterday when I plugged in a USB Headphone amp and DAC the system blue screened. I had just also turned on an amplifier somewhere nearby electrically (on a nearby socket or extension kind of thing).

    So it's for troubleshooting. As you can imagine I don't want to spend too much on it. There was a fancy looking EVGA 1000 G2 recently for under £90.

    Hit me with your expertise!
    Last edited by Millennium; 03-05-2018 at 01:59 AM.
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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    650W consumption for a 6600K & a 390? Sounds a lot like overkill:

    https://hexus.net/tech/reviews/graph...nitro/?page=11

    Hexus used an OC'd 4770K, which should be comparable to your chip

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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    Thank you for looking into this for me and posting a helpful reply.

    My Hexus profile is outdated. Here are some specs:

    AMD R 1700 @ 3.9 GHz @ about 1.4V
    AMD Vega 56, overclocked
    MSI B350 Gaming Plus
    2*8GB DDR4 3200 Million Cycles/second Samsung B die. I think I may be at 1.35V on that
    3 7200 RPM HDD
    SSD: Samsung 850 Pro
    Sound card (Asus Xonar)
    SATA Expansion card
    no lights
    Cooler with 2 fans
    I think 2 system fans


    I think I covered it let me know if any reader needs more information on this. Maybe a 750 watt PSU will cover this. Like this one?

    Best wishes
    Naveen
    Last edited by Millennium; 02-05-2018 at 11:41 AM.
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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    Gigabyte don't make their own PSUs. The one you linked seems to be a rebrand of a CWT unit. Personally I stick to SeaSonic or Super Flower. They are often the OEM behind other brands like Antec, Corsair, EVGA too. Takes a bit of investigation to see who actually makes the PSU. RealHardTechX has a regularly updated list that is handy to find out who makes what: http://www.realhardtechx.com/index_a...wDatabase.html

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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    I didn't get the clocks or voltages exactly correct but feel free to check this link - looks like a 1000w is my requirement and I'm very close to that power draw sometimes!

    https://outervision.com/b/NQhWIs

    You know I haven't been that impressed with PSU calculators before but this one looks pretty well made | done.

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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    if you go to our home page, you can filter on the PSU section and on reviews only

    https://hexus.net/tech/cat/psu/type/reviews/

    like that

    Our reviews for PSU's are very hightly rated across the industry.

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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    I see the monitor is included on that list - monitors usually have their own PSU, so shouldn't be included in the main calculations (it may not be of course - but it isn't clear)
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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    Quote Originally Posted by Zak33 View Post
    if you go to our home page, you can filter on the PSU section and on reviews only

    https://hexus.net/tech/cat/psu/type/reviews/

    like that

    Our reviews for PSU's are very hightly rated across the industry.
    Thank you Zak

    I'm in a funny mood today and on some pretty powerful meds. I appreciate the direct link and will check it out later when I am at home on a more comfortable seat....
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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    Quote Originally Posted by peterb View Post
    I see the monitor is included on that list - monitors usually have their own PSU, so shouldn't be included in the main calculations (it may not be of course - but it isn't clear)
    Agreed but I think it's for the cost calculation functions they're also doing rather than the PSU power draw requirement calculation. Hopefully
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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    That's a high voltage, AMD recommends a "safe" limit of 1.35V for long-term overclocks, Ryzen can take up to 1.45V, though it doesn't recommend this for long-term use.

    there's a thread here about ryzen overclocking and power consumption https://arstechnica.com/civis/viewto...?f=8&t=1384163
    Granted they are only talking CPU+SoC power draw

    The AMD Vega 56 overclocked can pull a lot esp in spikes, up to 300ish watts

    Still 550-650w is all you should need.

    double check models on the psu review data base http://www.realhardtechx.com/index_a...wDatabase.html

    A UPS might be a good idea, If just to act as a layer of filtering for your wall power

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  16. #11
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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    You don't need so much power!! A mate has a 550W Antec Truepower new PSU which is probably 5 years old,and for the last few years its been running an overclocked FX6350 and a Powercolor R9 390 fine.

    I am running an IB Xeon E3 1230 V2 and a GTX1080FE off a Corsair SF450 450 SFX PSU.

    So a 550W PSU will be plenty,and if you want to go OTT a 650W would be more than what you probably need!


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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    Thank you Pob255. When I get home I'll try and accurately provide the correct voltages and clocks to the outervision psu calculator service.

    If I remember

    Then I'll post up a new link and picture maybe we should go from there. Feel free to post meanwhile, it's all good fun

    edit: based on the recommendations from PeterB, CAT-THE-FIFTH and others I'm inclined to not really believe the result of this calculator. A good 750w PSU should be plenty for this system.
    Last edited by Millennium; 05-05-2018 at 07:00 PM.
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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    This is the card my mate has:

    http://hexus.net/tech/reviews/graphi...0-pcs/?page=11



    That is at the wall with an overclocked Core i7 4770K.

    Hexus reviewed the Vega56 and Vega64 with an overclocked Core i7 6700K:

    http://hexus.net/tech/reviews/graphi...on-rx-vega-56/



    Even with a Vega64 look at the power consumption. A stock Vega56 card consumes less power than an R9 390.

    It would not surprise me if the overclocked FX6350 my mate uses consumes more power than the overclocked Ryzen 7 1700 you are using.


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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    CAT-THE-FIFTH friend, the information you provide is exactly why I didn't refer to a PSU Calc site first when making my post. I checked graphs for peak power draws. I didn't check if that was component draw or full system draw.

    Thank you. I might just get a 750w PSU for kicks. Though, Scan's web presence (it's too cool to be a site lol) suggests 750w~+ PSUs are a dual GPU card component.

    This is too confusing!

    Peter what do you think maybe?
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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    OK,I am just going to say this - a lot of this arguing on tech forums about power consumption is usually relative,not the actual figures,so its lead to a situation where people think you NEED a 1.21 jigawatt PSU.

    However,if you look at absolute numbers,especially with consumer level CPUs,it tends to show really don't need mahoosive PSUs.

    The overclocked FX6350 and R9 390,is hardly an efficient setup,but that system has been running that config since 2015,and the PSU was probably two years already at the time.





    Ryzen is far more efficient in comparison.
    Last edited by CAT-THE-FIFTH; 02-05-2018 at 12:44 PM.


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    Re: Need a value Tier 1 PSU of 850w or 1000w (overkill?)

    I would suggest looking at the Seasonic Focus 650W:

    https://www.scan.co.uk/products/650w...hoCje4QAvD_BwE

    The 750W version is not massively more expensive,but the 650W one should have more than enough extra power,unless something is going weird with your system!!


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