Agree, but no mother board will take more than 2 cards
You might want to look at one of the 4-Way SLI /Crossfire MotherBoards. Eg. http://www.gigabyte.com/Motherboard/GA-X99P-SLI-rev-10#ov
Thou they generally don't come cheap (unless used). And you may need a CPU with more than 16 PCIe lanes (also not the cheapest). Some of the older X99 CPUs have 28 or 40 lanes for example. Plus, powering the GPUs directly from the PSU... And a Case with enough slots etc... And more cooling...
@BeholdMiNuggets Eh, I keep all my builds in simple text files so I mostly just copied and pasted from those and didn't bother with a picker list. :) Going E-ATX for a Burst miner is certainly ambitious, but it's also probably overkill. Once you get into high-end workstation or server builds, you start to run into large diminishing returns for your investment (unless you already have the hardware, plan to use it for other things, etc). Burst mining is meant to run on low-end machines and not draw a lot of power or resources, so I would advocate building multiple cheaper machines with normal ATX hardware rather than one monster machine. Besides inherently giving you more redundancy should a machine fail, there's also a limited number of add-on cards and devices you can connect to any given machine before things start bottlenecking or you just run out of IRQs, even if you still have slots or ports left on your mobo. Once you've stacked about 100TBs on one machine and you want more, it's probably going to be cheaper and easier just to build a second machine.
i wrote a tutorial about rejuvenation it increases throughput of any written drive. Just used it on my MyBook 8TB External. Although marginal, it increased the drives gain and i got a slightly faster throughput. Also, I deliberately did away with NTFS for exfat and transferred its plot from an internal pc drive using a 3rd party copying application to prevent fragmentation by using a large memory buffer adjustable in the app. NTFS can be a bottleneck on external disks is why exfat was invented. A fusebundle is available for linux to read them too.
@newsense2004 It's not cheaper if they all fail a year from now and you have to buy new ones. :) Also, 2 year warranty on the backup plus hubs, vs 1 year warranty on the regular expansions... minus two extra ports.
if you could set it up as a Burst mining contract or similar and get it listed above such that it had the shortest payback period, then it would turn heads and do wonders for Burst and your asset at the same time. You have the technical know how and contacts to pull it off, plus the investors would be buying in Bitcoin, so the Burst price would not be affected by your setup costs.
the onboard GPU of the motherboard : H81 Pro BTC. it says it has a intel HD graphics onboard, I'm not sure which one, I think 4400/4600. And yes both of these, internal harddrives by sataIII, external harddrives by usb 3.0
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