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Thread: Powersupply for 2x Titan X

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    Quote Originally Posted by DrVoidberg View Post
    On kitguru they tested pascal sli with:
    - Corsair 1000W RMx Series Modular 80 Plus Gold
    - i7-6850K
    and measured 650W

    Nvidia website recommended 600 W for one Titan.
    I guess the KG example doesn't fit perfectly.

    First of all, you know, that oc'ed, 6 cores Broadwell-E drew easily about 60-80W more than your CPU right from idle. Then, the highest value was recorded with syntethic stress test, not real life loads (as gaming), and that may add around 50-60W over those latter. Last but not least, as you know that were the AC figure, making a well educated guess the conversion losses add further 50W on top of that.

    Whether that were reasonable, if we do the math we'd get 650 - (60 + 50 + 50) = 490: all in all the KitGuru review is not in contraddiction with other available data, is it?

    BTW, do what you think best: more than one finding told me that with a frugal 1231 you don't need a very high capacity but, as ridgid pointed out, money are yours and not mine. Even better, if there are a few bucks leftover, pick a power meter, please: I'd love to receive an actual check for such a setup!
    Best, Luca

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    I went for the evga p2 750.
    when everything is assembled i can measure the current through the wall adapter no problem!

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    If you went with the RM750i, you could measure it on your PC and not have to rely on a wall adapter.

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    Quote Originally Posted by jonnyGURU View Post
    If you went with the RM750i, you could measure it on your PC and not have to rely on a wall adapter.
    You mean hx750i? I don't think RM750i competes with 750 p2 in efficiency..

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    Quote Originally Posted by ridgid13579 View Post
    You mean hx750i? I don't think RM750i competes with 750 p2 in efficiency..
    I meant RMi. It doesn't compete on efficiency, but it does in everything else.

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    Quote Originally Posted by jonnyGURU View Post
    I meant RMi. It doesn't compete on efficiency, but it does in everything else.
    Are you also implying that HXi is inferior to RMi (in everything else but efficiency)?
    Best, Luca

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    Quote Originally Posted by quest for silence View Post
    Are you also implying that HXi is inferior to RMi (in everything else but efficiency)?
    Nope. But efficiency is such a minor bulletpoint. Clearly someone is buying based on efficiency vs. features if they're going to choose a P2 vs. RMi. The RMi's "lack of efficiency" is negligible for what someone is going to save on their electric bill. If someone wasn't being cost conscious, there's certainly better choices than either the P2 or the RMi.

    Thus my suggestion for RMi.

    But this is a moot point. OP bought a more efficient, albeit feature-lacking, PSU for a decent price.

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    I would say 1000watts is way to go. Even though the test sli used the same. It recomended that you dont load 100% all the time psu are going to run fine at that load but for how long the longer full load the quicker it will worn out.

    Since the nvidia recomedation itself 600watts. But it doesnt imply adding another card will do 1200watts.

    Its safer with 1200watts. But 1000watts is minimum recomended.

    Say your load fluctuates between 700-850 watts it better 1000watts than 850x series.

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    Quote Originally Posted by Dirtymacho View Post
    I would say 1000watts is way to go.
    Why?
    Best, Luca

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