Need rig recommendations please help
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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.
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@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.
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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.
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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
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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 $1295
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Here is screen shots of the proposed rig and the components.
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@socal
I'd go for a larger board with more PCIe slots. No way to grow with that one.
I'd ditch this expensive GPU and buy a used one, prefereably AMD.Have to admit that my experience with opencl code is limited to this exact scenario, but 2+ years ago.
Please have a concentrated look into the mining section to find specifics and perhaps comparisons between
various Nvidia and AMD chips. It might very well be that the most bang/buck is to be had with a 100$ used GPU(s).
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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.
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@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
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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)
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@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.
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@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
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@socal A used 280X is more than enough.
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@haitch oh that's all I'll need? I was told by several ppl to go with RX 480......
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@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
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@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.
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@socal Invest in GPU more than CPU
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@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.
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As for the HDDs I'm thinking of going with 8TB NAS drives. The NAS drives are a better quality than desktop drives and are engineered specifically for always on, 100% usage, whereas regular Desktop drives are not meant for constant usage, like Burst Mining does.
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@socal NAS drives are a good choice - they're engineered to deal with the vibrations the other drives in the system create.


