750W or higher for i7-8700k + GTX1080ti FTW3?

Is 750W PSU enough i7-8700k + GTX1080ti FTW3 for 1440p gaming + streaming + video editing build (CPU oc 5GHz, no OC on GPU)?

Ive seen in early reviews that i7-8700k can chug more than a healthy 300W of power when loaded on all cores. 1080ti FTW3 is said to draw max 280W.

I initially wanted to get myself 650W PSU but adding together just GPU and now CPU is awfully close to its limit (and i dont know how much rest of system takes, i have X62 cooling, 3 case fans and planning one LED strip).

Im settled to get 750W for sure but now thinking it shouldnt make it 850W. For the record, no SLI planned, build is for at least 3 years.

The PSU's im gonna pick are Seasonic Prime Gold units.
Reply to Zaporro
5 answers Last reply
More about 750w higher 8700k gtx1080ti ftw3
  1. A good 750W is plenty of power.

    Prime would be a great choice.
    Reply to SR-71 Blackbird
  2. Yes, a Seasonic Prime 750W Gold is fine.
    Reply to jankerson
  3. Zaporro said:
    I
    Ive seen in early reviews that i7-8700k can chug more than a healthy 300W of power when loaded on all cores. 1080ti FTW3 is said to draw max 280W.

    I bet you looked at what the whole system is using.
    Reply to Vic 40
  4. Vic 40 said:
    Zaporro said:
    I
    Ive seen in early reviews that i7-8700k can chug more than a healthy 300W of power when loaded on all cores. 1080ti FTW3 is said to draw max 280W.

    I bet you looked at what the whole system is using.


    I could have, few reviews would state "whole system with GPU being idle" and other would not say anything.

    Yeah this one says "whole system with GPU being idle http://www.guru3d.com/articles_pages/intel_core_i7_8700k_processor_review,27.html shows 312W in "Wildlands"

    Tom's own review does not say if its full system or not, http://www.tomshardware.com/reviews/intel-coffee-lake-i7-8700k-cpu,5252-12.html shows up to 170W in AVX without offset

    i expected to see more reviews (not counting those 2 page 'articles' that dont even dig into thermals or power consumptioon)
    Reply to Zaporro
  5. Zaporro said:


    I could have, few reviews would state "whole system with GPU being idle" and other would not say anything.

    Yeah this one says "whole system with GPU being idle http://www.guru3d.com/articles_pages/intel_core_i7_8700k_processor_review,27.html shows 312W in "Wildlands"


    Yeah i look at that one and he says the above then records 312watts when gaming so i doubt that the gpu is idle there.Maybe he tested also with Aida 64 or similar,but should show that as well when making remarks like that.

    Not saying that the psu chosen is a bad choice btw,was just making a statement that most reviews use system power usage,not only the usage of the part tested .
    Reply to Vic 40
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