Which motherboards can support 4-6 graphics cards?

[N[e]wBie]

I don't see many cards that have even four PCIE slots, but I am hearing some people put up to six on a single board! How is this possible? Which boards will work? Thanks! 

[Kenshin]

This is what you need. http://uk.msi.com/product/mb/Z77A-GD65.html

You can have 7 GPUs in this one.

[empoweoqwj]

This is what you need. http://uk.msi.com/product/mb/Z77A-GD65.html

You can have 7 GPUs in this one.

Yep, i have one of those .... just not with 7 GPU's fitted!

[Feneusens]

Can this motherboard work with window?

[pletharoe]

Yes it works with Windows (you'll be hard pushed to find a mobo which won't)

Yes it will accept 7 GPUs (like many many other mobos with 7 PCI-E slots)

Yes, they will all overheat because they're too close together (buy yourself powered PCI-E risers for all the cards and find a way of giving them more space)

Don't forget about power - you'll need a behemoth of a PSU to run 7 GPUs.

[empoweoqwj]

Yes it works with Windows (you'll be hard pushed to find a mobo which won't)

Yes it will accept 7 GPUs (like many many other mobos with 7 PCI-E slots)

Yes, they will all overheat because they're too close together (buy yourself powered PCI-E risers for all the cards and find a way of giving them more space)

Don't forget about power - you'll need a behemoth of a PSU to run 7 GPUs.

Like pletharoe says, although it supports 7 cards, I wouldn't recommend sticking 7 in unless you want to start a fire. You really need to get into advanced cooling techniques if you want to run 7 cards from one motherboard.

[Colin Miner]

Like pletharoe says, although it supports 7 cards, I wouldn't recommend sticking 7 in unless you want to start a fire. You really need to get into advanced cooling techniques if you want to run 7 cards from one motherboard.

One other reason for spreading your GPUs over several motherboards is for diversity of your mining power.

If you have all your GPUs in one board and it fails you have lost 100% of the mining capability.

Have the same GPUs spread over 3 motheboards and loose one motherboard, you still have 66.6% of your mining capability running, bringing in an income while you make repairs to the broken rig.

[takagari]

Also looking for a motherboard.
But I'm fine with running 4, And would like recomend's on a cheap gpu/cpu eaily found on ebay for example. As I plan to order a couple.

I like having spares!

[ssateneth]

The MSI 990FXA-GD65V2 supports 6 GPU, and has dedicated power plug for powering pci-e slots. No more burned ATX power connector. Getting all 6 GPU to mine is the responsibility of the OS and drivers.

[sadycz]

and ... how many GHS will this do?

[mejim]

and ... how many GHS will this do?

6 gpu at 700 = 0.0042 GHS or did you mean 4200 MHS?

[takagari]

and ... how many GHS will this do?

Motherboard does not do hashes... That's based of number and model of your GPU

[Slander]

Run more rigs with less cards. Trust me, much easier and more efficient. Those who say different have not done both.

[empoweoqwj]

Run more rigs with less cards. Trust me, much easier and more efficient. Those who say different have not done both.

Certainly much easier and less likely to blow up. Whether more efficient is open to debate. Motherboards costs money.

[takagari]

Does anyone have a name for a mobo that works well, 4 pci, sub $100 range with a cheap cpu option?

Seems a waste to buy 7 pci slot's if I may never use them

[N[e]wBie]

I don't think you need 4 PCIe, just 4 total GPU slots possibly if you are using risers, so maybe asrock extreme 3 ? I am defintiely not sure about this, but check it out.

[empoweoqwj]

Does anyone have a name for a mobo that works well, 4 pci, sub $100 range with a cheap cpu option?

Seems a waste to buy 7 pci slot's if I may never use them

Yeah, that mobo is certainly overspecced for the job, overspecced for almost any job. There are many much cheaper motherboards that will take 4 graphic cards. http://www.msi.com/ is one producer, there are several others. Sure someone here owns a sub-$100 borad that does the job?

[takagari]

Does anyone have a name for a mobo that works well, 4 pci, sub $100 range with a cheap cpu option?

Seems a waste to buy 7 pci slot's if I may never use them

Yeah, that mobo is certainly overspecced for the job, overspecced for almost any job. There are many much cheaper motherboards that will take 4 graphic cards. http://www.msi.com/ is one producer, there are several others. Sure someone here owns a sub-$100 borad that does the job?

I'm sure there's plenty. But loikinng for one someone has used. Hate to grab one with issues.

[barabashko]

this one will manager 5 cards without power risers with 2 x 1kwt psu ?
(r9 290)
MSI FM2-A85XA-G43

[empoweoqwj]

this one will manager 5 cards without power risers with 2 x 1kwt psu ?
(r9 290)
MSI FM2-A85XA-G43

How much is that roughly?