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BrianH (OP)
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July 25, 2011, 06:07:10 AM |
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Anyone running 6 cards on a single board? Which board? Does it work without pin mods?
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mikeo
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July 25, 2011, 02:53:44 PM |
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No good at Cantonese. What brand and model is that board? |
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CanaryInTheMine
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between a rock and a block!
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July 25, 2011, 03:02:41 PM |
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ga-x58a-ud9
google it
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chungenhung
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July 25, 2011, 04:01:55 PM |
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that is chinese, not cantonese.
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BkkCoins
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July 25, 2011, 05:04:39 PM |
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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) |
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bleedkira
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July 25, 2011, 05:20:40 PM |
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But that would also mean more CPUs, PSUs, RAM, HDDs, etc. which eventually would likely total more than the one system build.
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mike678
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July 25, 2011, 05:56:52 PM |
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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. |
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CanaryInTheMine
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between a rock and a block!
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July 25, 2011, 06:17:28 PM |
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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. |
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mike678
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July 25, 2011, 06:37:18 PM |
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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. |
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mikeo
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July 25, 2011, 07:10:34 PM |
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that is chinese, not cantonese.
Maybe not Cantonese, but then that would make it Mandarin, right? AFAIK there is no "Chinese" language dialect ;-) |
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BrianH (OP)
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July 25, 2011, 07:20:27 PM |
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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?
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fitty
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July 25, 2011, 07:27:29 PM |
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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. |
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mike678
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July 25, 2011, 08:20:05 PM |
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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. |
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kokojie
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July 25, 2011, 08:31:05 PM |
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a lot of mobo can run 6 cards with proper risers.
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btc: 15sFnThw58hiGHYXyUAasgfauifTEB1ZF6
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BrianH (OP)
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July 25, 2011, 08:51:25 PM |
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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? |
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lowlevel
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July 25, 2011, 08:55:56 PM |
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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  |
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Xephan
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July 25, 2011, 09:07:26 PM |
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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)  |
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mike678
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July 25, 2011, 09:33:47 PM |
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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. |
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