Need rig recommendations please help

socal

@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.

socal

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.

socal

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

socal

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

socal

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

m.imgur.com/a/Jnj4G

vaxman

@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).

ZapbuzZ

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.

RichBC

@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

socal

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)

haitch

@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.

socal

@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

haitch

@socal A used 280X is more than enough.

socal

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

haitch

@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

socal

@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.

rnahlawi

@socal Invest in GPU more than CPU

socal

@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.

socal

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.

haitch

@socal NAS drives are a good choice - they're engineered to deal with the vibrations the other drives in the system create.

vaxman

@socal said in Need rig recommendations please help:

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

like I said, an R280X will produce some 150 MB/s.
What does that even mean ?

It has 3 GB of local memory, so every 20 seconds it will flood your IO system to get rid of those 3 GB.
They have to go somewhere. And until that is done, it will not continue to compute.
So basically, when your Operating System is not able to manage enough disk buffers for writing , in this case : 3 GB, the overall speed will go down considerably.
compute 3GB -> flush to disk -> still flushing, -> still flushing -> compute next 3 GB

(I'm not so sure about Windows here, I had nasty 12,5% max buffer problem that couldn't be resolved. Linux doesn't have that problem in general, but depending on filesystem might need a mount option here or there).

So you buy this suuuper fast RXwhatever, yielding 300 MB/s.
These have to go somewhere.. you'd need a stripe for that, as disks typically max out at 150-180 MB/s. Otherwise your GPU waits for your mis-scaled IO system.