Motherboard of choice for 6 or more GPU's

[Grim]

I would also like info on your 6 gpu setup.  I have ordered 2 MSI 990FXA-GD65 V2 hoping to populate 6gpus without to many issues. If this Mobo does not work looks like the MSI Z77A-GD65 is in my near future.

Can anyone confirm the version 2 board will work I see above the normal version works with no problems. But they didnt state enviroment.

Seeing yours looks stable you mind sharing.  Also what PSU you using?

That mobo has a 6 pin (pcie) power connector on the board, will you use it or will you useuse powered riseres instead?

[jaywaka2713]

I would also like info on your 6 gpu setup.  I have ordered 2 MSI 990FXA-GD65 V2 hoping to populate 6gpus without to many issues. If this Mobo does not work looks like the MSI Z77A-GD65 is in my near future.

Can anyone confirm the version 2 board will work I see above the normal version works with no problems. But they didnt state enviroment.

Seeing yours looks stable you mind sharing.  Also what PSU you using?

That mobo has a 6 pin (pcie) power connector on the board, will you use it or will you useuse powered riseres instead?

Both would be the safest route and ensure the highest hashrate, as that built in power connector still wont feed more than the motherboard would if it wasnt there.

[endriuska]

I'm in the market for 6GPU(7950) setup as well, so what PSU are you guys recommending? I would like to use 1 PSU per rig if that is possible.

So is 4GB ram enough for scrypt mining or no? what about CPU? is crappy CPU ok? or do i need to push up a level?

Thanks

[jaywaka2713]

I'm in the market for 6GPU(7950) setup as well, so what PSU are you guys recommending? I would like to use 1 PSU per rig if that is possible.

So is 4GB ram enough for scrypt mining or no? what about CPU? is crappy CPU ok? or do i need to push up a level?

Thanks

I would recommend 8 with 6 GPUs. also don't use a total shit CPU. Use a intel sandy bridge series processor at the least. doesn't have to be a good one, but i'd recommend it. With the recommended boards you've seen such as the MSI Z77A-G45, a sandy bridge processor is a must. Also, I recommend using a server power supply (1600W min). Or just ground two 1000 W PSUs together.

[endriuska]

jaywaka - Thanks, I put together a what i think will work for me(note i switched from 7950 to 6870), could you take a look and see if it make sense?

https://bitcointalk.org/index.php?topic=200684.msg2104287#msg2104287

Thank you

[jaywaka2713]

jaywaka - Thanks, I put together a what i think will work for me(note i switched from 7950 to 6870), could you take a look and see if it make sense?

https://bitcointalk.org/index.php?topic=200684.msg2104287#msg2104287

Thank you

Replied, gave advice. Hopefully it helps.

[Ultraviolet]

I would recommend 8 with 6 GPUs. also don't use a total shit CPU. Use a intel sandy bridge series processor at the least. doesn't have to be a good one, but i'd recommend it. With the recommended boards you've seen such as the MSI Z77A-G45, a sandy bridge processor is a must. Also, I recommend using a server power supply (1600W min). Or just ground two 1000 W PSUs together.

Honest question, why do you need a Sandy Bridge?

[jaywaka2713]

I would recommend 8 with 6 GPUs. also don't use a total shit CPU. Use a intel sandy bridge series processor at the least. doesn't have to be a good one, but i'd recommend it. With the recommended boards you've seen such as the MSI Z77A-G45, a sandy bridge processor is a must. Also, I recommend using a server power supply (1600W min). Or just ground two 1000 W PSUs together.

Honest question, why do you need a Sandy Bridge?

I was under the impression that he was going to do some Scrypt mining. Sandy Bridge processors aren't crap for it from what I've heard.

[Marrs]

I would recommend 8 with 6 GPUs. also don't use a total shit CPU. Use a intel sandy bridge series processor at the least. doesn't have to be a good one, but i'd recommend it. With the recommended boards you've seen such as the MSI Z77A-G45, a sandy bridge processor is a must. Also, I recommend using a server power supply (1600W min). Or just ground two 1000 W PSUs together.

Honest question, why do you need a Sandy Bridge?

I was under the impression that he was going to do some Scrypt mining. Sandy Bridge processors aren't crap for it from what I've heard.

The reason someone would want to use an IVY bridge CPU is if the motherboard they have disables one of the pcie slots if an IVY bridge CPU isn't being used.

All CPUs that fit in a socket 1155 board are at least sandy bridge, even the low end one core celeron g440.

[jaywaka2713]

I would recommend 8 with 6 GPUs. also don't use a total shit CPU. Use a intel sandy bridge series processor at the least. doesn't have to be a good one, but i'd recommend it. With the recommended boards you've seen such as the MSI Z77A-G45, a sandy bridge processor is a must. Also, I recommend using a server power supply (1600W min). Or just ground two 1000 W PSUs together.

Honest question, why do you need a Sandy Bridge?

I was under the impression that he was going to do some Scrypt mining. Sandy Bridge processors aren't crap for it from what I've heard.

The reason someone would want to use an IVY bridge CPU is if the motherboard they have disables one of the pcie slots if an IVY bridge CPU isn't being used.

All CPUs that fit in a socket 1155 board are at least sandy bridge, even the low end one core celeron g440.

OK. The board has 7 slots, but 1 pcie x1 slot is hard-disabled even with the ivy bridge if the 3 pcie x16 slots are used in conjunction with the other 3 pcie x1

[CartmanSPC]

I found this thread helpful on the MSI Z77A-G45

https://bitcointalk.org/index.php?topic=97154.0;all

[jaywaka2713]

I found this thread helpful on the MSI Z77A-G45

https://bitcointalk.org/index.php?topic=97154.0;all

Just note when you read that thread that you can ONLY use 6 GPUs on that board. Scroll down and read a bit and it will be explained. Nice find though!

[CartmanSPC]

Yup, picture says it all:



I do wonder... if you use a x16 riser in the orange highlighted slot will you still need to PCIe presence short it?

I'm actually running this board now with two 7970s in a HAF XM until I get powered risers and a custom case. The card between the CPU and second GPU runs about 6-7c hotter.

Plan to use the MSI 890FXA-GD70 in the custom case I plan to build so wont be using more than two cards on the MSI Z77A-G45 until I build a second many months down the road.

[jaywaka2713]

I do wonder... if you use a x16 riser in the orange highlighted slot will you still need to PCIe presence short it?

I actually am running this board now with two 7970s in a HAF XM until I get powered risers and a custom case. The card between the CPU and second GPU runs about 6-7c hotter.

Plan to use the MSI 890FXA-GD70 in the custom case I plan to build so wont be using more than two cards on the MSI Z77A-G45 until I build a second many months down the road.

You will need a PCIe presence short even with a x16 riser. I wouldn't recommend using an x1 riser anyways LOL.

Also, make sure you look into the power distribution of that MSI 890FXA-GD70 board. Sometimes if you occupy 6 slots one will shut down. Make sure you know which one. Also look around to try and find other rigs with that board.

[boozer]

I do wonder... if you use a x16 riser in the orange highlighted slot will you still need to PCIe presence short it?

I actually am running this board now with two 7970s in a HAF XM until I get powered risers and a custom case. The card between the CPU and second GPU runs about 6-7c hotter.

Plan to use the MSI 890FXA-GD70 in the custom case I plan to build so wont be using more than two cards on the MSI Z77A-G45 until I build a second many months down the road.

I dont know about the MSI Z77A-G45, but I do know that on the MSI Z77A-G65 you can use all 7 slots with an Ivy bridge processor and no presence pin shorting is required on any slot!  I use 7 1x to 16x risers, 4 of them are powered, 3 get power from the board.

[jaywaka2713]

I do wonder... if you use a x16 riser in the orange highlighted slot will you still need to PCIe presence short it?

I actually am running this board now with two 7970s in a HAF XM until I get powered risers and a custom case. The card between the CPU and second GPU runs about 6-7c hotter.

Plan to use the MSI 890FXA-GD70 in the custom case I plan to build so wont be using more than two cards on the MSI Z77A-G45 until I build a second many months down the road.

I dont know about the MSI Z77A-G45, but I do know that on the MSI Z77A-G65 you can use all 7 slots with an Ivy bridge processor and no presence pin shorting is required on any slot!  I use 7 1x to 16x risers, 4 of them are powered, 3 get power from the board.

The G45 only allows 6 of the 7 slots. I haven't heard anything about the G65. Have you confirmed that all 7 cards run at full hashpower? Can you post your system config and all its hardware?

[boozer]

The G45 only allows 6 of the 7 slots. I haven't heard anything about the G65. Have you confirmed that all 7 cards run at full hashpower? Can you post your system config and all its hardware?

sveetsnelda made the post on the previous page and I am building rigs so I decided to try the board.
https://bitcointalk.org/index.php?topic=186877.msg1990544#msg1990544

I have 7950's on it.  I'm busy with the build but hopefully can find time to create a thread with the boards I have made 6 and 7 card rigs on soon as quite a few are interested.

[mc_lovin]

big bang marshal b3 is my weapon of choice.

[ISAWHIM]

MSI Z77A-G45

It just works. lol, sort-of... has one trick-slot Middle slot 16x needs a presence jumper when used as 1x with all 6 slots full. Only 6 of the 7 are able to be populated. One 1x slot disables, when a 16x slot is filled. But they are worth every penny.

[ssateneth]

I wouldn't recommend using an x1 riser anyways LOL.

Why not? What makes 16x risers so much better? IMO they're more difficult to plug in, causing unnecessary stress to the riser and video card and possibly break. I broke all my 16x risers because they were too difficult to plug in (No I didn't break them in a fit of rage. They broke because they required too much force. The wires that were soldered on would break off)