6 cards, 1 board

[BrianH]

Anyone running 6 cards on a single board? Which board? Does it work without pin mods?

[macbook-air]

Here is a board with 7 PCI Express and two 12V input: http://item.taobao.com/item.htm?id=12232520473

[mikeo]

Here is a board with 7 PCI Express and two 12V input: http://item.taobao.com/item.htm?id=12232520473

No good at Cantonese. What brand and model is that board?

[CanaryInTheMine]

ga-x58a-ud9
google it

[chungenhung]

that is chinese, not cantonese.

[BkkCoins]

You must be kidding. $481 for one board?
You could buy 7 of the popular Biostar A870U3 for less and that gives you 28 slots for GPUs.
(or numerous other options)

[bleedkira]

But that would also mean more CPUs, PSUs, RAM, HDDs, etc. which eventually would likely total more than the one system build.

[mike678]

But that would also mean more CPUs, PSUs, RAM, HDDs, etc. which eventually would likely total more than the one system build.

I haven't run the numbers but I'm almost positive it isn't justifiable because you can get 6 slots for less then half. That means your paying 280 for 2 extra slots which is definitely more then all the other parts required to build a server. Also if you argue the psu should be included keep in mind that with 8 gpu's you would most likely need 1500+ watt psu and those things are fucking expensive.

[CanaryInTheMine]

But that would also mean more CPUs, PSUs, RAM, HDDs, etc. which eventually would likely total more than the one system build.

I haven't run the numbers but I'm almost positive it isn't justifiable because you can get 6 slots for less then half. That means your paying 280 for 2 extra slots which is definitely more then all the other parts required to build a server. Also if you argue the psu should be included keep in mind that with 8 gpu's you would most likely need 1500+ watt psu and those things are fucking expensive.

Ummm... You'll need at least 2 very good PSUs if not even 3 if you want to run 8 GPUs within efficiency range.

[mike678]

But that would also mean more CPUs, PSUs, RAM, HDDs, etc. which eventually would likely total more than the one system build.

I haven't run the numbers but I'm almost positive it isn't justifiable because you can get 6 slots for less then half. That means your paying 280 for 2 extra slots which is definitely more then all the other parts required to build a server. Also if you argue the psu should be included keep in mind that with 8 gpu's you would most likely need 1500+ watt psu and those things are fucking expensive.

Ummm... You'll need at least 2 very good PSUs if not even 3 if you want to run 8 GPUs within efficiency range.

I said 1500+ I realize you cant really get higher then around 1500 and you would need more. Also you technically can put 8 5770's on one psu

That being said you are just making my point more concrete and proving its not worth it to mine 8 gpu's on one board.

[mikeo]

that is chinese, not cantonese.

Maybe not Cantonese, but then that would make it
Mandarin, right? AFAIK there is no "Chinese" language dialect ;-)

[BrianH]

It does not really matter if the board has 20 PCI-E slots, if only 5 of them work.

So back to the original question... does anyone have 6 cards working on a board?

[fitty]

You must be kidding. $481 for one board?
You could buy 7 of the popular Biostar A870U3 for less and that gives you 28 slots for GPUs.
(or numerous other options)

He never asked if it was a good idea, he asked what boards can do it.

I've done a few builds and 3 seems to be a good number where you can get a $30-$50 mobo, $50 psu (good quality). As you go up to 4, 5, 6 you need a much more expensive board and much more expensive psu.

The main problem becomes the number of systems. I can build a 3x gpu systems that are cheaper then the 4x gpu setups but is it worth having 2-3 extra rigs to save a few hundred?

I have  5 3xgpu, 1 x5 gpu, 1 4xgpu and while the 4/5x gpus were more expensive in terms of dollar per mhash, my next few systems I'm leaning towards 5x gpus. It's less rigs to manage, less space, easier to focus cooling.

You can get 6 gpu boards for under 200 as long as you have risers. It really comes down to how much money you have and how much space. If you can only have a max of 4 rigs then I'd go for 5-6x gpu rigs no question.

[mike678]

You must be kidding. $481 for one board?
You could buy 7 of the popular Biostar A870U3 for less and that gives you 28 slots for GPUs.
(or numerous other options)

He never asked if it was a good idea, he asked what boards can do it.

I've done a few builds and 3 seems to be a good number where you can get a $30-$50 mobo, $50 psu (good quality). As you go up to 4, 5, 6 you need a much more expensive board and much more expensive psu.

The main problem becomes the number of systems. I can build a 3x gpu systems that are cheaper then the 4x gpu setups but is it worth having 2-3 extra rigs to save a few hundred?

I have  5 3xgpu, 1 x5 gpu, 1 4xgpu and while the 4/5x gpus were more expensive in terms of dollar per mhash, my next few systems I'm leaning towards 5x gpus. It's less rigs to manage, less space, easier to focus cooling.

You can get 6 gpu boards for under 200 as long as you have risers. It really comes down to how much money you have and how much space. If you can only have a max of 4 rigs then I'd go for 5-6x gpu rigs no question.

I have no clue where you got $50 for a good power supply. Assuming you want to use the most efficient card(5830) you would need around a 750 watt psu. The lowest good power supply on newegg is around $90 (http://www.newegg.com/Product/Product.aspx?Item=N82E16817182067). As for the mobo you could get a 50 dollar mobo but I'm not seeing any that wont require risers so add around 36 more dollars to that which is 86.

86-mobo+risers
60- case
90-psu
130*3 -5830
30- cpu
10- ram
10- flash drive
=676
330*3/616=1.4645


95- mobo
60-case
12*6-risers
200- psu
130*5 -5830
95 -6770
30- cpu
10- ram
10- flash drive
=1222
((330*5)+230)/1162=1.5385

If your willing to show a mobo that doesn't require risers for 3 cards at 50 bucks show me and same goes for a quality psu at 750w for 50. I'm not sure if those exists however.

[kokojie]

a lot of mobo can run 6 cards with proper risers.

[BrianH]

a lot of mobo can run 6 cards with proper risers.

Theoretically, but they seem to have problems with deactivating ports. This is the closest I have seen so far:
* Gigabyte GA-990FXA-D3 - 5 working, 1 PCI-E not working(?)
* MSI 890FXA-GD70- 5 working, 1 requires pinmods?
* Unknown board - not working

Focus... 6 cards, 1 board. Anyone running one?

[lowlevel]

I have no clue where you got $50 for a good power supply. Assuming you want to use the most efficient card(5830) you would need around a 750 watt psu. The lowest good power supply on newegg is around $90 (http://www.newegg.com/Product/Product.aspx?Item=N82E16817182067). As for the mobo you could get a 50 dollar mobo but I'm not seeing any that wont require risers so add around 36 more dollars to that which is 86.

Well, I've been pulling 312 Mhashes/sec out of a 5830 with an 430watt powersupply for 2+ months. (Thermaltake TR-2)
Hope it doesn't burn out 

[Xephan]

that is chinese, not cantonese.

Maybe not Cantonese, but then that would make it
Mandarin, right? AFAIK there is no "Chinese" language dialect ;-)

Technically, the words are in Chinese, as a written language. Since Mandarin only refers to the spoken dialect that's been chosen as the "common" spoken language. So we speak in Mandarin but write in Chinese (Simplified or Traditional)

[mike678]

I have no clue where you got $50 for a good power supply. Assuming you want to use the most efficient card(5830) you would need around a 750 watt psu. The lowest good power supply on newegg is around $90 (http://www.newegg.com/Product/Product.aspx?Item=N82E16817182067). As for the mobo you could get a 50 dollar mobo but I'm not seeing any that wont require risers so add around 36 more dollars to that which is 86.

Well, I've been pulling 312 Mhashes/sec out of a 5830 with an 430watt powersupply for 2+ months. (Thermaltake TR-2)
Hope it doesn't burn out 

The 750 watts is for 3 5830's if your just running one 430 watts should be fine.