Need rig recommendations please help



  • @rnahlawi OUTSTANDING!! The case was really where I was getting stuck but you have solved that problem nicely with your link good sir! Yes I'll do some hunting for motherboards and CPUs is there anything in particular I should be looking for like number of SATA or PCIe connectors?



  • @socal Motherboard: anyone will do (try to get one with as much SATA ports possible)
    CPU: I priced the i7 7700 (to be used for Plotting using Xplotter) and later to maintain the wallet or other related apps, you may go higher for XEON (but why?)
    GPU: RX480 8GB (Sapphire or XFX GTR models) to be used for Mining (don't settle for less).
    SATA/PCIE: That's tricky, you can get something simple like mine which will support Burst Mining mission (but not for intensive I/O operations) https://www.amazon.com/IO-Crest-Controller-Non-Raid-SI-PEX40064/dp/B01BBXMLQK
    Or something advanced like: http://www.highpoint-tech.com/USA_new/cs-series_DC7280.htm and relax .. @luxe can give you his advice from his own experience.



  • @socal

    for plotting:
    look at GPU support, forget CPU. I plotted a few hundred Terabytes with three (now ancient and cheap) R9-280x. Each of those cards yield > 150MB/s.
    You'd need 20 cores @ 2.1 GHz AVX2 to beat a single GPU. If your CPU has only SSE4 and no AVX2, double the number.

    for mining:
    My CPU (2x E5-2650v3ES) mines 108 MB/s per core (@2.1 GHz with AVX2 code, with SSE4 it is about 60 MB/s).
    I don't have any numbers for the jminer, but you can easily expect 8x increase.
    So depending on your target size (TB) and mining goal (scantime <NN seconds) you might get away with a cheap quadcore or should invest into a GPU (to avoid an overly pricey CPU).

    example:
    target size: 64 TB, target time: 20 seconds
    64*2^40 bytes / 4096 / 20s = 858993459 bytes/s
    ~850 MB/second must be read for a duration of 20s.
    This is a good candidate for GPU-assited mining.

    target size: 128 TB, target time: 90 seconds
    128*2^40 bytes / 4096 / 90s = 381774870 bytes/s
    380 MB/second must be read for 90 seconds.
    This is a good candidate for a quadcore with AVX2 support. BUT: System is at ~100% load for 90 seconds every 240 seconds.



  • @vaxman yes I'm planning on getting the i7-7700K in conjunction with a GTX 1070 and 32GB of RAM so there should be plenty of power for mining.



  • Build specs at this moment are coming out $3100 for a Brand New C&C computer and another 48TB of Mining capacity with room for another 72TB of internal mining capacity

    Please note this doesn't factor in any shipping costs or taxes.



  • I'm trying to stay away from externals for now I have too many already which is the point of getting the 15 bay case lol



  • Ok bedtime but before I go I will say I'm pleased with the rig I have picked out, I would have liked it if it were about $200 cheaper but I think I struck the best balance between cost, quality, and performance. Total rig cost (minus HDDs, tax and shipping) is $1295



  • Here is screen shots of the proposed rig and the components.

    m.imgur.com/a/Jnj4G



  • @socal
    I'd go for a larger board with more PCIe slots. No way to grow with that one.
    I'd ditch this expensive GPU and buy a used one, prefereably AMD.

    Have to admit that my experience with opencl code is limited to this exact scenario, but 2+ years ago.
    Please have a concentrated look into the mining section to find specifics and perhaps comparisons between
    various Nvidia and AMD chips. It might very well be that the most bang/buck is to be had with a 100$ used GPU(s).



  • Because your disks will be running 24/7 i recommend some cooling such as case fan arrangements or attach a cooling kit on the underside of them to keep the spindle bearings cooler.



  • @vaxman said in Need rig recommendations please help:

    I'd ditch this expensive GPU and buy a used one, prefereably AMD.
    Have to admit that my experience with opencl code is limited to this exact scenario, but 2+ years ago.
    Please have a concentrated look into the mining section to find specifics and perhaps comparisons between
    various Nvidia and AMD chips. It might very well be that the most bang/buck is to be had with a 100$ used GPU(s).

    I would go along with sticking with AMD, and seriously consider a used card.

    I have an old R9-290X and with 80TB the scan time is 10 seconds.

    Rich



  • Ok I have replaced the GTX 1070 with a GTX 1060 and I have replaced the 32GB of RAM with 16GB bringing total Rig Cost down to $1144 from $1410(minus HDDs, shipping, and taxes)

    I am also contemplating if I should just go ahead and get an 8 Port SATA controller now or if I should wait until I actually require it. Sorry I have a tendency to Futureproof (hence the original 1070 and 32GB RAM lol)


  • admin

    @socal As others have said, reconsider the nVidia card - AMD better proposition.

    Also avoid NAS - you're limited to network speed, and unless you have a 10Gb/s connection, you're going to be bandwidth limited.



  • @haitch yeah I'm staying away from NAS and I just can't let my Nvidia bias go lol ok ok I'll look for an RX 480


  • admin

    @socal A used 280X is more than enough.



  • @haitch oh that's all I'll need? I was told by several ppl to go with RX 480......


  • admin

    @socal If you want a new card, then a 470/480 is the way to go, but I'm still nicehash mining on a bunch of 280X's, and they're great for jMiner



  • @haitch I cranked it back to a 460 so total Rig cost (minus HDDs, shipping, and tax) is now $1110. I'm happy with that cost as it's well within the $1500 or so max budget I set.

    I will not compromise on the CPU/MoBo but everything else I can scale back, which I have done.



  • @socal Invest in GPU more than CPU



  • @rnahlawi well just in case I want to make sure I have a powerhouse of a CPU. I'm happy with the rig specs, should be plenty of power at a decent cost.


Log in to reply
 

Looks like your connection to Burst - Efficient HDD Mining was lost, please wait while we try to reconnect.