My mining rig build.... What do you think?

[bitcoinmineey]

Already ordered, can always return if something is wrong, would love your input

10x - XFX - Ultra OC Radeon 7850 1GB DDR5 PCI Express 3.0 Graphics Card

2x - ASRock FM2A88X Extreme6+ FM2+ / FM2 AMD A88X (Bolton D4) HDMI SATA 6Gb/s USB 3.0 ATX AMD Motherboard

4x - Logisys 480W 20/24-pin ATX Power Supply

2x -     AMD Sempron 145 Processor (SDX145HBGMBOX)

10x - pci 1x 16x powered molex risers

2x - Vantacor Dual PSU Adapter Cable 24 Pin 2-way

Some old hard drive and ram I have lying around

ubuntu linux



Questions-

Will there be enough molex ports on those power supplys to plug in all the cards?

I noticed that some graphics cards have power plugs in the top, do I need to plug those into the psu and the molex risers into the psu? Am i missing something here

Do you think I could get 7 cards on those motherboards, would i run into too many other complications?



***I will continue to upgrade this thread with pics as I go.

Thanks!

[bitcoinmineey]

nothing?

[thejepper]

You ordered all that without checking basic stuff like card layout and psu demand?

There are splitters available: http://www.linuxappliance.net/molex-splitter.html

[atp1916]

A couple issues, OP.

Your current boards can only do 4 cards max.  Return those boards and use this one.  I've had great stability running it with 5 cards.  It also has a molex powering the PCI-e Lanes.  With that board you can do 2 down, 3 up for good airflow and minimal riser use.

Your APU will hog a GPU driver slot that you really can't afford as you will be running 5 cards per rig.  Return those and go for the Athlon X2 340.

Logisys power supply is a no-no.  You only theoretically need a good 850w for each rig of 5 cards. 7850 is ~110-120w per card.  No need to run x4 PSUs. x2 Seasonic 850w, 1 per rig is all you need. Killer deal.

[balanghai]

Hey why did you order the APU? You could always have the semprons. They are hard to configure if you don't know what your doing because they do have built-in GPUs and the settings of your 7850 on intensity will cause the APU drivers to crash, thus crashing the miner. You can work around it by disabling the APU in the settings.

Also if you intend to mine the APU together with the GPU, you will have bottleneck and sometimes will cause your pc to freeze and also it will greatly reduce your hash on the 7850s because the apu cannot handle the task while every gpu is plugged and hashing.

[MisO69]

For my builds I use these, yes I know they are more expensive.

MSI Z87-GD65 gaming
6 x R9 280x or R9 290
2 x Corsair HX1050 PSU
64GB SSD
8GB ram.
Core i3 or celeron if I can find one. cheapest CPU.
All 6 on powered risers. LOOK!! -> https://www.hashratestore.com/shop/cables/usb-pci-e-riser-powered-molex-60-cm/  <-- New ones!

Use Windows 8.1 with NO AMD drivers. just the ones that come with Winbloze
AMD App SDK
Cgminer
done.

[actudoran]

good stuff. how does one get a hold of 280x or 290 in EU ...?

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[bitcoinmineey]

Thank you so much for your replies and help.

I did not mean to buy the apu, thanks for pointing that out

There seems to be 7 pci slots on that board, can I not use them all?http://www.newegg.com/Product/Product.aspx?Item=N82E16813157461
What's wrong with my power supply? Why is ot a no no,  it is so much cheaper!
Do I need to plug in the power from the gpu and the Molex connectors?

[atp1916]

Thank you so much for your replies and help.

I did not mean to buy the apu, thanks for pointing that out

There seems to be 7 pci slots on that board, can I not use them all?http://www.newegg.com/Product/Product.aspx?Item=N82E16813157461
What's wrong with my power supply? Why is ot a no no,  it is so much cheaper!
Do I need to plug in the power from the gpu and the Molex connectors?

You can only use the pci express slots, that board has 2 x1 and 2 x16.  You cannot use the regular PCI slots unless you use a pci-pcie x1 converter card which generally is not a good idea.

About the PSU: Your power supply is about the only thing in your system that can kill it immediately.  Do not skimp on a bad quality supply.  Your rig is an investment.  This is sound wisdom and you can take it for what it is, but those are terrible power supplies and you have been advised as such.  Any vet miner will tell you this.

Your cards appear to have 1 6 pin.  With that seasonic PSU, you would do a single 6 pin into each card (4 total), and then a molex -> 6 pin connector on the other 2.  

[bitcoinmineey]

Thank you for all the clarification. So your saying that the cards that are connected to the risers will need a molex and a 6 pin wire attached to them? How do I attach so many wires to the psu? Should I purchase some type of Y cable. Also using the cheaper power supply, what is my worst case scenario, can it destroy my hardware or will I just need a new power supply sooner than later, it is rated silver.

I bought the asrock mobo that you recommended and bought this cpu     AMD Sempron 145 Processor (SDX145HBGMBOX)


Again thanks for the input you have saved me so much time!