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FOR SALE Core I7-3960x System

Discussion in 'Hardware' started by Saundie, Nov 30, 2013.

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FOR SALE Core I7-3960x System

Discussion in 'Hardware' started by Saundie, Nov 30, 2013.

  1. Saundie

    Saundie Prototype Staff Member Tagged

    Good morning, gentlemen. I have decided that now is the time to part ways with my desktop system. I can no longer deny the fact that it is overkill for the tasks I put to it, and so I am selling it on. Based on the x79 platform, the system can accommodate up to 64GB and Quad-SLI for an entirely beastly setup. I doubt there is going to be much interest here, given the nature of this beast, but I figure it was worth at least offering it to you.

    Before I list the full specification, I have to make a confession. It seems that there may be a problem with the CPU, albeit a minor one. The system requires a large increase in vcore in order to get it to run in a stable fashion with all of the memory sockets populated. With all eight populated, I had to push the vcore to 1.4v. With six populated, it still required 1.35v (which is within Intel's specification for the CPU). With four populated, everything works normally; even at 100% load in OCCT the vcore doesn't stray above 1.25v, and all the cores turbo up to 3.6GHz as expected. I suspect it's because the memory is from different batches with different timings, and the x79 platform is extremely fussy when it comes to memory. With a full set of matched memory the problem may be resolved - I don't have the resources at the moment to test this theory. As such, the system will be sold with 16GB in order to allow me to sell it as stable.

    With that out of the way, here is the specification;

    Intel Core i7-3960x
    Asus P9X79 PRO Intel X79 (Socket 2011) DDR3 Motherboard
    Gigabyte WindForce GTX 670 2GB
    Corsair Carbide 500R Midi Tower Case - Black (CC-9011012-WW)
    Corsair Vengeance Arctic White 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (CML8GX3M2A1600C9W) x 2 (total of 16GB RAM)
    Noctua NH-D14-2011 Dual Radiator CPU Cooler with PWM Fans
    Crucial M4 256GB
    1TB SATA drives x 2
    Creative Sound Blaster X-Fi Titanium
    DVD-RW drive
    3.5" bay fan controller
    Hiper Type-M 780w PSU

    I have the boxes for the memory, processor, motherboard and graphics card, which you may have. The PSU is about 5 years old and so is out of warranty, otherwise I am pretty sure everything else is in warranty. Collection from Croydon is the only way I can sell this, as it's just too much of a risk to ship it. In light of the issue with the memory/CPU I am asking only £1000 - to build the system from scratch would cost over £1800, so I think my asking price is quite reasonable.

    If you have any questions, please do not hesitate to ask!
  2. GoRedwings

    GoRedwings Tagged Donator

    OMG I have only just seen this thread. Damn I wish I lived near to Croydon. Is this only being sold as a complete setup?

    Anyways here's why I am really here in this thread.

    There is in fact nothing wrong with your cpu at all in fact it running as it should. Let me explain. The reason why you need more vcore to get it to run stable with all slots loaded is actually nothing to do with the different batches of memory but in fact to do with the onboard memory controller inside your cpu. The problem has existed for a very long time and as far back as I remember as well.

    Before Intel shifted the memory controller on die there was the exact same problem to the northbridge. And also one of the reason if you are an overclocker you never fully populate the rams slots if you want the max speed possible. In most cases most people have to run their cpu at a slower speed then what is achievable to get the system play nicely.

    I am not sure if this would affect the price but it might be something to consider to help you get a better price for your setup.
  3. Saundie

    Saundie Prototype Staff Member Tagged

    Are you interested in the system, GorkedWings19? It sounds as though the memory controller on the CPU is ****ed - do you think I should be able to RMA it?
  4. GoRedwings

    GoRedwings Tagged Donator

    Hi James,

    The RMA will fail and just cause you more inconvienience. THe memory controller on your cpu is fine. Honestly it is. It is a well known overclocking thing that happens when you have fully populated slots. It is because of the fully populated memory slots your setup is unstable without more vcore.

    Most enthusiast overclockers or benchers run their setup pretty much to the edge of what is deemed stable and what is not. They are also at the same time trying to achieve low volts to give them more headroom for overclocking and also lower load temps if been run under strain. So when you mix another memory modules into the setup regardless of cas states, dram voltage, brand it will not make a difference. This is because you can mix and match ram which I don;t personally advise but most motherboards have the facility to manually set them so they all run the same speed or all have the same voltage etc.

    So this extra memory puts more strain on the memory controller which means to stabilise it you have to increase memvoltage on die to compensate although now the general off set of this is higher temps and possibly less overclocking potential. Not a certain but could be a factor.

    If I remember correctly it also was a problem on the socket 939 setup when I used AMD. Everyone was using the Corsair dd2 cas 2.5 ram which at the time was the bees knees. But add 4 sticks of it into the equation and that was the overclock screwed or what not.

    But your issue is unique as you don;t really overclock and generally need the ram for the stuff you do I guess.

    As for your setup, I was interested but I live far away and don;t have a car and also I figured you would want to sell it as a whole setup instead of faffing around individual items as some of it took my fancy. I was more specifically interested in the cpu and mb only. But GL with your sale and I hope I have cleared up the cpu/memory query.
  5. Scorpiain

    Scorpiain Tagged Donator

    Would you consider selling just the graphics card (once i check it will slot into my system?)
    I work in Feltham, so Croydon isnt too bad to get to from there...
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