New here - Want to build a rig!
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i have that card its great for mining. buy as many as you can afford to invest in. i recommend 3 to a machine. you can go for 4 but those cards stock use around 300 watts. so a pretty big power supply is needed for 4. unless you under volt the cards
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Make sure you get risers ;)
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I’m pretty certain you would get a heat problem, if you put 4 of those cards in a midi tower. Probably you would have issues with three as well. For four cards, you might want to build an open rig instead of putting it in a tower.
And as tomsamadhi says, risers are a good idea, so you will be able to get more space between the cards.
I’m mainly using 7970’s, and with two of those in a midi tower, I have to leave the side off and put a large fan next to it to help it get rid of the warm air. And still, the GPU’s are currently running at 82 and 86C… and they are making a lot of noise keeping the temperature down.
However, the cards you are considering there might be cooler. But if they use 300w each, they should get pretty hot too and might be a problem in a midi tower.
I’m only 1 week into the mining game though, so I might be wrong.
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[quote name=“HizzleFizzle” post=“43298” timestamp=“1386821946”]
I’m pretty certain you would get a heat problem, if you put 4 of those cards in a midi tower. Probably you would have issues with three as well. For four cards, you might want to build an open rig instead of putting it in a tower.And as tomsamadhi says, risers are a good idea, so you will be able to get more space between the cards.
I’m mainly using 7970’s, and with two of those in a midi tower, I have to leave the side off and put a large fan next to it to help it get rid of the warm air. And still, the GPU’s are currently running at 82 and 86C… and they are making a lot of noise keeping the temperature down.
However, the cards you are considering there might be cooler. But if they use 300w each, they should get pretty hot too and might be a problem in a midi tower.
I’m only 1 week into the mining game though, so I might be wrong.
[/quote]Also using 2x7970s in a case, had to take off the side panel and place a fan next to it. running at 73 and 63(the second card is always 8-10 degrees cooler, wonder if that could have a bad effect ?)its been 1 week for me too ! (bonding moment:P).
Anyway,back on topic. Id also say 4xcards in case is a HUGE NO. As you can see were having temperature trouble with only 2 cards inside a case. if you’re going for 4 or even 3 cards you have to build an open rig and use some pci-e risers for adequate spacing between the cards, to keep the temperature down.
A Riser is basically a cable that inserts into a pci-e slot and takes a pci-e card on the other side, (extension)[url=http://www.ebay.com/itm/25CM-PCI-E-1X-To-16X-Powered-Riser-Cable-Ribbon-Extender-Adapter-Riser-Card-/191000040013]http://www.ebay.com/itm/25CM-PCI-E-1X-To-16X-Powered-Riser-Cable-Ribbon-Extender-Adapter-Riser-Card-/191000040013[/url].
CPUs arent really important in mining rigs, id say go for the cheapest compatible one. unless you intend to use the pc for other uses too. PSU is a really important part, everyone here would recommend going for a single-rail (only one 12v rail) design, the Seasonic x-1250 is the best out there right now.
Cheers!
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Thanks for comments!
Well, after looking at MB, I’ve ordered only 3 VGA’s. Not going to use any risers, at least for the moment.
I will use mid tower. Keeping side open is not an issue. Sound is not an issue. Temperature… Well, it will be standing next to my air conditioning unit, so I think it should be OK…
However all of it will arrive only for the next year as VGA’s are pre-order for 27th december… -
[quote name=“Kiwis” post=“43382” timestamp=“1386844133”]
Thanks for comments!
Well, after looking at MB, I’ve ordered only 3 VGA’s. Not going to use any risers, at least for the moment.
I will use mid tower. Keeping side open is not an issue. Sound is not an issue. Temperature… Well, it will be standing next to my air conditioning unit, so I think it should be OK…
However all of it will arrive only for the next year as VGA’s are pre-order for 27th december…
[/quote]Sounds like it should work out just fine then :)
Good luck! -
[quote name=“Kiwis” post=“43382” timestamp=“1386844133”]
Thanks for comments!
Well, after looking at MB, I’ve ordered only 3 VGA’s. Not going to use any risers, at least for the moment.
I will use mid tower. Keeping side open is not an issue. Sound is not an issue. Temperature… Well, it will be standing next to my air conditioning unit, so I think it should be OK…
However all of it will arrive only for the next year as VGA’s are pyre-order for 27th december…
[/quote]My mobo has 5 pci-e slots but without risers I’m only able to fit x2 R9 280X vapor x.
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dedicated mining without building a case… you should get a workbench case.
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So it has arrived :) 3 VGA’s does not fit without risers :'( bought some, waiting to be delivered.
For now trying with 2 VGA’s. Problem is that it only runs ~520 KH/s.
As I see, people talk about flashing bios, but I have no idea what files to use for that.
Tried searching, but can’t find any decent info apart 7970 flashing.
Could anyone point me to the right direction to achieve 700+ KH/s? :) -
[quote name=“Kiwis” post=“48457” timestamp=“1388430878”]
So it has arrived :) 3 VGA’s does not fit without risers :'( bought some, waiting to be delivered.
For now trying with 2 VGA’s. Problem is that it only runs ~520 KH/s.
As I see, people talk about flashing bios, but I have no idea what files to use for that.
Tried searching, but can’t find any decent info apart 7970 flashing.
Could anyone point me to the right direction to achieve 700+ KH/s? :)
[/quote]What kind of config are you running? You’d only want to flash if you had a locked bios and would want to overclock or drop the voltage. I would start with the miner configs first.
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using gui miner. the only setting I’ve managed to find do myself is:
–gpu-memclock 1550 --gpu-engine 1070 -
Have a go with this and let me know how you get on
[code]–gpu-memclock 1500 --gpu-engine 1050 -I 13 -g 2 -w 256 --thread-concurrency 11200[/code]
UM
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I use currency 8192.
With the one you suggested it actualy dropped by 15 kh/s -
OK so post up your complete command string so we can see whats going on
UM
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–scrypt -u Kiwis.1 -p xxx -o stratum+tcp://pool.d2.cc:3333 --gpu-platform 0 -d 0 -w 256 -v 1 -I 13 -g 1 -l 1 -T --gpu-memclock 1550 --gpu-engine 1070 --thread-concurrency 8192
this one runs on around 570 kh/s.–scrypt -u Kiwis.1 -p xxx -o stratum+tcp://pool.d2.cc:3333 --gpu-platform 0 -d 0 -w 256 -v 1 -I 13 -g 1 -l 1 -T --gpu-memclock 1550 --gpu-engine 1150 --thread-concurrency 8192
this one runs around 605-610 kh/s.trying to increase gpu engine further drivers starts crashing instantly…
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[quote name=“Kiwis” post=“48584” timestamp=“1388455422”]
–scrypt -u Kiwis.1 -p xxx -o stratum+tcp://pool.d2.cc:3333 --gpu-platform 0 -d 0 -w 256 -v 1 -I 13 [glow=red,2,300]-g 1[/glow] [glow=green,2,300]-l 1[/glow] -T --gpu-memclock 1550 --gpu-engine 1070 --thread-concurrency 8192
this one runs on around 570 kh/s.–scrypt -u Kiwis.1 -p xxx -o stratum+tcp://pool.d2.cc:3333 --gpu-platform 0 -d 0 -w 256 -v 1 -I 13 -g 1 -l 1 -T --gpu-memclock 1550 --gpu-engine 1150 --thread-concurrency 8192
this one runs around 605-610 kh/s.trying to increase gpu engine further drivers starts crashing instantly…
[/quote][glow=red,2,300]Set this to 2[/glow]
[glow=green,2,300]Is this another intensity statement in the same line?[/glow]
So what happens if you replace all of the above with this?
[code]–scrypt -u Kiwis.1 -p xxx -o stratum+tcp://pool.d2.cc:3333 --gpu-memclock 1500 --gpu-engine 1050 -I 13 -g 2 -w 256 --thread-concurrency 11200[/code]Your going to find life much easier if you write yourself a cgminer.conf file and put it in the same dir as cgminer, something like the below will give you a reasonable starting point to work from.
[code]{
“pools” : [
{
“url” : “stratum+tcp://pool.com:3333”,
“user” : “username”,
“pass” : “password”
},
{
“url” : “stratum+tcp://pool2.com:3333”,
“user” : “username”,
“pass” : “password”
}
],“auto-fan” : true,
“temp-target” : “70”,
“temp-cutoff” : “81”,
“temp-overheat” : “85”,
“api-listen” : true,
“scrypt” : true,
“intensity” : “13”,
“thread-concurrency” : “11200”,
“worksize” : “256”,
“gpu-engine” : “1050”,
“gpu-memclock” : “1500”,
“gpu-threads” : “2”,
“gpu-powertune” : “0”,
“kernel-path” : “/usr/local/bin”
}[/code]starting cgminer is as simple as just that type cgminer into your command line from the correct directory and away it goes
Also gives you the advantage of controlling the separate cards a little better should you wish too.
UM (it’s get very late and sleep might give you a better explanation)
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Thank You! running at 710 KH/s! wonderful!
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Hm, the dedicated rig is doing 710 KH/s, however I have another PC running the same single VGA, and there same settings for some reason only bumps it up to 580 KH/s :)
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[quote name=“Kiwis” post=“48626” timestamp=“1388476856”]
Thank You! running at 710 KH/s! wonderful!
[/quote]Who would have thought you could tune another 100Mh/s out of a rig from hundreds of miles away, with no sleep ;)
Now you have yourself a good starting point, look in the cgminer directory on your machine for “scrypt-readme.txt” and do exactly that read it. The go get a coffee come back to the machine and read it again, arm yourself with a couple of hours and a bit of paper and you should be able to get that up by another 40Mh/s easily.
[quote author=Kiwis link=topic=5863.msg48627#msg48627 date=1388477497]
Hm, the dedicated rig is doing 710 KH/s, however I have another PC running the same single VGA, and there same settings for some reason only bumps it up to 580 KH/s :)
[/quote]Again if you want help your going to have to post more details, CPU, Mem, O/S, CGMiner version, Driver Version, Complete command line etc
Happy mining
UM
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Everything is working perfectly, however electricity usage went through the roof :o
I was expecting increase, but not a 100£ in 3 days increase…
Could it be that I’m wasting power because I have 1300w psu, and only 2 vga’s connected?
Also, how much could I undervolt it if anybody done that?