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Topic: Mobo that can handle 4x 7970's? (Read 2868 times)

member
Activity: 70
Merit: 10
March 15, 2012, 11:12:18 PM
#25
I believe the 7970 uses less power then the 5870 so the Mobo shouldn't have an issue. Do you use the extenders with Molex (http://cablesaurus.com/index.php?route=product/product&product_id=28)? I'm thinking about buying this for my next rig. Have you used it with a USB Flash drive. I've had problems with some MoBo (Gigabyte specifically) not booting from the USB Flash Drives.

Thanks for the info!
 
sr. member
Activity: 472
Merit: 250
March 15, 2012, 09:53:02 PM
#24
I simply use $60 MSI mATX h61-p21 boards. I have two of them and each runs 4x5870s. If you're going to use 4x7970s I may consider putting them on risers with Molex plugs.

This is what im looking for! thanks man, cheap and runs the cards

I bought one new and one open box. I figured if either failed I could send it in as the new one. It saved about $20, but at this point they've been solid. With 4x7970s I would definitely put the cards on Molex risers though. I think I have to be pushing the boundaries of these little boards to supply power to 4x5870s.
member
Activity: 119
Merit: 10
March 15, 2012, 08:20:45 PM
#23
being able to hold down the power switch for 5 seconds to turn off a hung rig is valuable to me...   

You can always turn the switch on the PSU.

Excactly. Besides, if it comes to that you're doing something wrong.
newbie
Activity: 44
Merit: 0
March 15, 2012, 02:04:29 PM
#22
I simply use $60 MSI mATX h61-p21 boards. I have two of them and each runs 4x5870s. If you're going to use 4x7970s I may consider putting them on risers with Molex plugs.

This is what im looking for! thanks man, cheap and runs the cards
sr. member
Activity: 472
Merit: 250
March 14, 2012, 05:33:18 PM
#21
I simply use $60 MSI mATX h61-p21 boards. I have two of them and each runs 4x5870s. If you're going to use 4x7970s I may consider putting them on risers with Molex plugs.
That looks like a pretty good miner platform for those with extender cables, as it is all PCIe 1x slots with no legacy PCI, and a Celeron G440 can go in that ($65+$41 free ship on NewEgg). I started looking at AMD boards figuring that a Sempron plus the least-expensive brand-name 4xPCIe motherboard would be cheaper than an Intel platform.
For later resell though, a motherboard with two 16x PCIe slots plus a 2.8GHz AMD CPU will sell easier than a mATX no-PCI-slot board with a 1.6GHz Celeron - you can sell the AMD with GPUs as a crossfire gaming system, but the Intel can't even be a media PC (only VGA out).

that is tru, but the 2 I listed has on mobo start and reset buttons for caseless rigs.
I've got your reset switch right here:

For power, just set the BIOS to power on after power loss.

I have two of those boards with G440s. I had to flash the bios for the boards to post with the G440s, but it was extremely simple. Other than that they have been working fine. I use a screwdriver to start the machines as well.
legendary
Activity: 3472
Merit: 1727
March 14, 2012, 02:07:48 PM
#20
being able to hold down the power switch for 5 seconds to turn off a hung rig is valuable to me...   

You can always turn the switch on the PSU.
legendary
Activity: 1876
Merit: 1000
March 14, 2012, 02:05:12 PM
#19
that is tru, but the 2 I listed has on mobo start and reset buttons for caseless rigs.

I just short the powerpins with a screwdriver/knife. It's not hocus pocus. Save yourself some money and buy a cheap board and risers

$4: http://www.newegg.com/Product/Product.aspx?Item=N82E16812201029

Last time i had use for a powerswitch was sometime late 2011. You can set your computer to boot from your mouse if you want to.

being able to hold down the power switch for 5 seconds to turn off a hung rig is valuable to me...   
member
Activity: 119
Merit: 10
March 14, 2012, 01:40:02 PM
#18
that is tru, but the 2 I listed has on mobo start and reset buttons for caseless rigs.

I just short the powerpins with a screwdriver/knife. It's not hocus pocus. Save yourself some money and buy a cheap board and risers

$4: http://www.newegg.com/Product/Product.aspx?Item=N82E16812201029

Last time i had use for a powerswitch was sometime late 2011. You can set your computer to boot from your mouse if you want to.
legendary
Activity: 1876
Merit: 1000
March 14, 2012, 12:26:59 PM
#17

there are other reasons I like the higher end mobo

1.  resale value.  the gd70 is a great gamer mobo
2.  2 nics
3.  more slots: Don't you want more then 4 cards on a rig?



how about 6.  2460 Mh


e21
member
Activity: 105
Merit: 10
March 14, 2012, 11:45:56 AM
#16
that is tru, but the 2 I listed has on mobo start and reset buttons for caseless rigs.

I just short the powerpins with a screwdriver/knife. It's not hocus pocus. Save yourself some money and buy a cheap board and risers

$4: http://www.newegg.com/Product/Product.aspx?Item=N82E16812201029
member
Activity: 119
Merit: 10
March 14, 2012, 06:41:09 AM
#15
that is tru, but the 2 I listed has on mobo start and reset buttons for caseless rigs.

I just short the powerpins with a screwdriver/knife. It's not hocus pocus. Save yourself some money and buy a cheap board and risers
legendary
Activity: 1512
Merit: 1036
March 13, 2012, 11:53:03 PM
#14
I simply use $60 MSI mATX h61-p21 boards. I have two of them and each runs 4x5870s. If you're going to use 4x7970s I may consider putting them on risers with Molex plugs.
That looks like a pretty good miner platform for those with extender cables, as it is all PCIe 1x slots with no legacy PCI, and a Celeron G440 can go in that ($65+$41 free ship on NewEgg). I started looking at AMD boards figuring that a Sempron plus the least-expensive brand-name 4xPCIe motherboard would be cheaper than an Intel platform.
For later resell though, a motherboard with two 16x PCIe slots plus a 2.8GHz AMD CPU will sell easier than a mATX no-PCI-slot board with a 1.6GHz Celeron - you can sell the AMD with GPUs as a crossfire gaming system, but the Intel can't even be a media PC (only VGA out).

that is tru, but the 2 I listed has on mobo start and reset buttons for caseless rigs.
I've got your reset switch right here:

For power, just set the BIOS to power on after power loss.
sr. member
Activity: 472
Merit: 250
March 13, 2012, 10:32:34 PM
#13
I simply use $60 MSI mATX h61-p21 boards. I have two of them and each runs 4x5870s. If you're going to use 4x7970s I may consider putting them on risers with Molex plugs.
legendary
Activity: 1876
Merit: 1000
March 13, 2012, 07:58:20 PM
#12
that is tru, but the 2 I listed has on mobo start and reset buttons for caseless rigs.
legendary
Activity: 1512
Merit: 1036
March 13, 2012, 06:54:30 PM
#11
If you are going to buy the extender cables, you don't need a motherboard with all 16x slots, you can use a mobo like this one with 1x->16x adapters for 4 cards:



legendary
Activity: 1876
Merit: 1000
March 13, 2012, 06:47:38 PM
#10
Sweet... Where do I get them PCI cables? Or what the hell are they called?
amazon
hero member
Activity: 490
Merit: 500
... it only gets better...
March 13, 2012, 06:09:39 PM
#9
Cool, thanks... Couldn't think of the name..
legendary
Activity: 3472
Merit: 1727
March 13, 2012, 06:03:34 PM
#8
Sweet... Where do I get them PCI cables? Or what the hell are they called?

PCIe extenders/ribbons/risers

ebay (either cheap and wait 2-3 weeks, or wait a few days and pay much more) or 9mart.com
don't overpay at cablesaurus

hero member
Activity: 490
Merit: 500
... it only gets better...
March 13, 2012, 05:49:39 PM
#7
Sweet... Where do I get them PCI cables? Or what the hell are they called?
legendary
Activity: 1876
Merit: 1000
March 13, 2012, 05:44:46 PM
#6
hero member
Activity: 490
Merit: 500
... it only gets better...
March 13, 2012, 05:40:48 PM
#5
How do you fit 5 on there?
legendary
Activity: 1876
Merit: 1000
March 13, 2012, 02:24:29 PM
#4


I have 5 7970's on this one:  http://www.newegg.com/Product/Product.aspx?Item=N82E16813130274R

I have 5 7970's on this one:  http://www.newegg.com/Product/Product.aspx?Item=N82E16813131735



I tried to put a 6th 7970 on the gd70, but even tho the drivers appear to load, windows devices disabled one of the cards each time..  did not figure out why, just kept the 5 running
newbie
Activity: 44
Merit: 0
March 13, 2012, 01:56:13 PM
#3
hero member
Activity: 490
Merit: 500
... it only gets better...
March 13, 2012, 01:35:41 PM
#2
P9X79WS
newbie
Activity: 44
Merit: 0
March 13, 2012, 01:05:43 PM
#1
I've seen this: http://www.newegg.com/Product/Product.aspx?Item=N82E16813128514

But it seems way more expensive than I probable need and not sure if the pci cards are going to be spaced enough to hold 4 of these massive cards, can you guys give me some advice? ..Maybe look into extenders???
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