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Thread: i7 870 vs i7 875k

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    Default i7 870 vs i7 875k

    Though it might be useless topic to some people, but I still need some help from tech gurus.

    The question is whats the difference between i7 870 and i7 875k?
    Is it like that only 875K is overclockable and 870 is not? I'm confused, someone please clear it out.

    I have planned to buy a i7 series desktop. So need some help with this.
    And also, is it worth to buy AMD Phenom II X6 1090T rather than i7 870 for :

    #1:Video Encoding
    #2:Multi-tasking(open ~40 tabs+MS Office+Gaming and small application)

    Last edited by salmanshah; February 21st, 2011 at 15:21.

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    Default Re: i7 870 vs i7 875k

    I don't know much but I would pick Phenom II X6 for encoding.


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    Default Re: i7 870 vs i7 875k

    Quote Originally Posted by salmanshah View Post
    Though it might be useless topic to some people, but I still need some help from tech gurus.

    The question is whats the difference between i7 870 and i7 875k?
    Is it like that only 875K is overclockable and 870 is not? I'm confused, someone please clear it out.

    I have planned to buy a i7 series desktop. So need some help with this.
    And also, is it worth to buy AMD Phenom II X6 1090T rather than i7 870 for :

    #1:Video Encoding
    #2:Multi-tasking(open ~40 tabs+MS Office+Gaming and small application)

    An AMD Phenom II X6 1090T is slower than an i7 870, and an i7 875k is faster than an 870 :/ So yeah :/

    AMD Phenom II X6 1090T < i7 870 < i7 875k.

    a Hexa-Core processor is not recommended in your cases, an i7 875k would do the job.


    Phenom II X6 1090T is compared with a Core i5-2400, so not worth it i guess :/
    Last edited by error; February 21st, 2011 at 18:13.

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    Default Re: i7 870 vs i7 875k

    but if I OC it I guess I can outperform i7 875K also? and Is 875K available in BD?

    btw I have also asked 1 more question. I think you didn't care to read that.

    The question is whats the difference between i7 870 and i7 875k?
    Is it like that only 875K is overclockable and 870 is not? I'm confused, someone please clear it out.

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    Default Re: i7 870 vs i7 875k

    Quote Originally Posted by salmanshah View Post
    but if I OC it I guess I can outperform i7 875K also? and Is 875K available in BD?

    btw I have also asked 1 more question. I think you didn't care to read that.
    Yes i did read that, didn't answer it coz i'm not sure about that :/

    and no 875k is not available afaik.

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    Default Re: i7 870 vs i7 875k

    No gurus there to help me out?
    I think I should open a new topic for my new configuration. I will link the post asap.

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    Default Re: i7 870 vs i7 875k

    Quote Originally Posted by salmanshah View Post
    No gurus there to help me out?
    I think I should open a new topic for my new configuration. I will link the post asap.
    Well, look, if you have the choice between an 875k and an 870, everyone will suggest you to buy the 875k. Moving to the latest platform will be far more better, and about overclocking the 870 to perform like an 875k, i won't recommend this. Anyway, your choice, i would get the 875k if i were you

    ---------- Post added at 19:01 ---------- Previous post was at 18:59 ----------

    owh and 870 khub rare and 875k available na, so i'm assuming these will be bought from abroad :S right?

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    Default Re: i7 870 vs i7 875k

    Quote Originally Posted by salmanshah View Post
    The question is whats the difference between i7 870 and i7 875k?
    Is it like that only 875K is overclockable and 870 is not? I'm confused, someone please clear it out.
    Yes it is, you got it right, "k" means unlocked. But there are some more things you have to consider before planning a purchase.

    Quote Originally Posted by salmanshah View Post
    I have planned to buy a i7 series desktop. So need some help with this.
    If you have already planned to buy an i7, then you might be unsatisfied with another product other than i7 for no good reason and blame yourself (and the person who suggested you). Just guessing, its normal.

    Quote Originally Posted by salmanshah View Post
    And also, is it worth to buy AMD Phenom II X6 1090T rather than i7 870 for :

    #1:Video Encoding
    #2:Multi-tasking(open ~40 tabs+MS Office+Gaming and small application)
    I am going to discuss the video encoding part in depth. Are you a professional video editor? If yes, then you have to consider CPU cost and power consumption cost at the same time for the sake of your business. If you are planning to overclock the CPUs (guessing from your inquiry about 870 and 875k) then you will also have to worry about additional cooling and insanely high power consumption. Even then, the modern video encoders do not even make the full use of CPU power, and also does not scale linearly. So, a 140% overclock might give you only 110-125% performance boost while consuming almost 2x the power. You would obviously hate that if you have to think about profit. See the graph below...

    Name:  graph9_575px.jpg
Views: 152
Size:  29.9 KB


    But if you just do some encoding once a week or so, then there is no need to OC, stock CPU will run them just fine. Overclocking is only worth the hassle for renderers as they will run 40% faster when run on a CPU with 40% higher clock. As you have not mentioned it, then I would suggest not to worry about overclocking.

    That being said, i7 875k just got itself disqualified. The battle is now between 870 and 1090T.

    In arithmetic apps like MS Office, all desktop CPUs will suck so don't worry about it. Browser with ~50 tabs have more to do with RAM than with CPU. In gaming, Intel almost always wins. In "small application ()", any CPU will do. So, get whatever you want. But Intel should be preferred as it will give you higher overall performance. But that does not mean 1090T is a waste, it is also a good choice at its price range. So, I am going to leave it to your personal taste.


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    Default Re: i7 870 vs i7 875k

    Last edited by salmanshah; February 22nd, 2011 at 02:19.

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