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Showing 20 of 124 results by darkpandora
Rig 1 - 1 X 5970 (upper) & 1 X 6990 (Lower):
Rig 2 - 2 X 6990 (1 PowerColor LCS 6990 [lower], 1 XFX 6990 with Koolance water block [upper]):
More pics of the same here: http://s1236.photobucket.com/albums/ff441/DirtRiderB/Bitcoin%20Mining%20Rigs/
Sorry for the crappy quality images.
Rig 2 - 2 X 6990 (1 PowerColor LCS 6990 [lower], 1 XFX 6990 with Koolance water block [upper]):
More pics of the same here: http://s1236.photobucket.com/albums/ff441/DirtRiderB/Bitcoin%20Mining%20Rigs/
Sorry for the crappy quality images.
nice rig. =)
what are the temperatures on the 2x 6990?
How many Mhash/s do you get out of the blue leds?
[/cheap irony]
[/cheap irony]
Hahah! I normally leave the UV cathode off. Had it on for looks.
what temp do they run at? Running mine at 950/386 at around 420Mhash/sec and don't have any temp problems with just air cooling.
Will
Will
The one mining 469 MHash/s is averaging 38°C. The other is at 34°C.
very good temperatures, i want water cooling for my 2 6990, i want to overclock but i cant because the temprature are 70 on all of them.
+1
Absolutely. Someone has a creative wife.
+1
haha this mining rig made my day
I have bought 6 pci express 1x to 16x powered USB raisers. I plugged all in correctly, but when i hit start button, the computer does not power on, all it does is give a small push to the fans for a split second and nothing happens. the fans turn on for a split second then powers off.
the computer does not even boot or start or show anything on the screen. it simply does not start at all.
specification:
Motherboard: Gigabyte GA-Z87X-UD3H
Powesully: 3x xfx 850W
GPU: 6x r9 290
Raisers: 6x http://www.ebay.com/itm/PCI-express-1x-to-16x-16x-1x-mining-Extender-Riser-Card-Power-USB3-0-cable-/271378879332?pt=LH_DefaultDomain_0&hash=item3f2f711364
Raiser info: the raisers have jumper installed so i dont need to do a jumper on the pci e 1x for the motherboard to recognize the card.
the computer does not even boot or start or show anything on the screen. it simply does not start at all.
specification:
Motherboard: Gigabyte GA-Z87X-UD3H
Powesully: 3x xfx 850W
GPU: 6x r9 290
Raisers: 6x http://www.ebay.com/itm/PCI-express-1x-to-16x-16x-1x-mining-Extender-Riser-Card-Power-USB3-0-cable-/271378879332?pt=LH_DefaultDomain_0&hash=item3f2f711364
Raiser info: the raisers have jumper installed so i dont need to do a jumper on the pci e 1x for the motherboard to recognize the card.
Re: BTC Guild - 0% Fees, Long polling, SSL, JSON API, and more [~2800 gH/sec]
i get this error when starting the mining:
failed to connect, retrying.
is this pool really fixed or whats going on?
failed to connect, retrying.
is this pool really fixed or whats going on?
which server are you trying to connect to?
eu.btcguild.com
but now its working fine after connecting to uswest.btcguild.com
Re: BTC Guild - 0% Fees, Long polling, SSL, JSON API, and more [~2800 gH/sec]
im mining at eu.btcguild.com:8332/ and on my mining rig my Mhash/sec is 1670. but on btcguild it dont show my total Mhash/s or Estimated Rewards.
is it counting my shares or should i change pool?
is it counting my shares or should i change pool?
Re: 6990 clock 970,870 running around 63C, win7 or ubuntu?
Did you try with the latest drivers?
Catalyst 11.6 seems to have the restriction removed (you don't even need amdoverdrivectrl)
Catalyst 11.6 seems to have the restriction removed (you don't even need amdoverdrivectrl)
Adapter 0 - AMD Radeon HD 6990
Core (MHz) Memory (MHz)
Current Clocks : 955 1250
Current Peak : 955 800
Configurable Peak Range : [500-1200] [1250-1500]
GPU load : 0%
Adapter 1 - AMD Radeon HD 6990
Core (MHz) Memory (MHz)
Current Clocks : 955 1250
Current Peak : 955 800
Configurable Peak Range : [500-1200] [1250-1500]
GPU load : 0%
you need amdoverdrivectrl i think.. look at your current clock and current pleak:)
Current Clocks : 955 1250
Current Peak : 955 800
You might be right, definitely one of those measurements is in error (since you can't have a current above your peak). Prior to the patch, if you attempted to set the memory clock below 1250 you would get an error and combining that with the fact that I wasn't able to hit 955 or 960 at 1250. I'm guessing that this is actually running at 800. I'll see if I can come up with a better test.
you can only set memory clock 100mhz under gpu core clock as i mentioned here:
I don't think there is any advantage to overclock the mem. I would leave it the same or lower it anyway. OS shouldn't matter really, whatever is your personal preference is IMHO. If you do switch to Windows there are reports of some having difficulties getting that 4th card to show up. What mobo are you using?
my motherboard is MSI 890FXA-GD70.
the memory is not a problem, on 6990 you cannot downclock memory more then 100mhz under core speed (example: gpu 900 memory 800, gpu 970 memory 870). i think my problem is low voltage, on ubuntu amdoverdrivectrl the max voltage is 1.175.
Re: 6990 clock 970,870 running around 63C, win7 or ubuntu?
Did you try with the latest drivers?
Catalyst 11.6 seems to have the restriction removed (you don't even need amdoverdrivectrl)
Catalyst 11.6 seems to have the restriction removed (you don't even need amdoverdrivectrl)
Adapter 0 - AMD Radeon HD 6990
Core (MHz) Memory (MHz)
Current Clocks : 955 1250
Current Peak : 955 800
Configurable Peak Range : [500-1200] [1250-1500]
GPU load : 0%
Adapter 1 - AMD Radeon HD 6990
Core (MHz) Memory (MHz)
Current Clocks : 955 1250
Current Peak : 955 800
Configurable Peak Range : [500-1200] [1250-1500]
GPU load : 0%
you need amdoverdrivectrl i think.. look at your current clock and current pleak:)
Current Clocks : 955 1250
Current Peak : 955 800
1 powerful fan like mine is enough to get cool air from outside...
Your fan has an insane CFM. It sucks more than 7m³/minute through that 120x120 hole.Sadly I can't find it anywhere in Europe for normal price. Will do more research, though
Where did you get it and what did you pay?
im also from europe(norway) and i bought it on ebay for 50usd i think.
send the guy a message, he have more to sell but havnt put it on ebay.
here:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&_trksid=p4340.l2557&nma=true&rt=nc&item=130532184228&pt=LH_DefaultDomain_0&si=Am6nW0aTEz1k%252B58U9jfCoUVCZP4%253D&viewitem=&hash=item1e645310a4#ht_2215wt_905
Re: 6990 clock 970,870 running around 63C, win7 or ubuntu?
What's the fan speed and ambient temperature? Mine is at around 70°C with default fan profile.
fan speed is 100% and temps at midday is 65-70 and midnight 55-60 celsius.
this is my cabinet and setup: http://forum.bitcoin.org/index.php?topic=7216.msg283831#msg283831
Awesome modifications to your cabinet darkpandora, I remember seeing the first version 
thanks:) the previews cabinet was failing lol. the heat was cycling in the cabinet and my fans wasnt powerful enough to push cool air inside and push hot air outside.
that 120mm fan that is mounted on the exhaust is very powerful and good. when i close the cabinet door cool air pushes the door and comes out, i had to put a tape on close the door:)
in midday the temps are around 65-70 and at night the temps are at 55-60 celsius.
The setup is brilliant :-)
thanks:)darkpandora, are you for real? lol. All that for 2 cards? i was expecting a closet of 50+ cards.
yes i am. those cards are not some cheap ati 5xxx cards, they are 6990 that cost 5000 norwegian krones each and those cards give me 1670 Mhash/s.
and by the way, good luck keeping 50 cards overclocked and cool in a closet at that size.
inspiring @darkpandora 
thanks... you should put whole on the case so the heat goes out and not cycle inside the case. and 1 powerful fan like mine is enough to get cool air from outside...
thats why i want to overclock higher to 1000 or 1100 core.
1100 core.
1100 core.
what
Take a temp gun & point it at the vrm, it will be scorching hot, for your money's sake I hope you don't do that.
It wont be worth the miniscule increase in hashing rate & jump in power usage.
Really, one of the worst ideas is to overvolt and 30% OC a dual gpu card
my gpu temprature and the air in the mining rig box is very cold... i have a 6000rpm 120mm fan that pushes cold air from outside at 260CFM in a exhaust right on top of the 2x 6990 (will take a picture later)... its very loud and extremely powerful, is not im my room or near my room so noise and heat is not my problem...
Simple: Don't run a 6990's cores at 1000mhz. That's *insane* for 24/7 usage.
Power usage will go to 500-600 watts just for the card & kill the VRM in continuous use.
Remember that it uses 450W just in the normal OC mode which is 880mhz.
It goes exponentially higher, and rewards get diminishingly lower as you raise the clock frequency.
Power usage will go to 500-600 watts just for the card & kill the VRM in continuous use.
Remember that it uses 450W just in the normal OC mode which is 880mhz.
It goes exponentially higher, and rewards get diminishingly lower as you raise the clock frequency.
dont know, but my 6990 is very cool now at OC 970,870... runs around 60Celsius.
thats why i want to overclock higher to 1000 or 1100 core.
thx!
could your instability problem be a result of an insufficient PSU? with OC the cards draw up to 450 Watt each, and depending on your mobo, cpu and other things and the efficiency of your PSU this could cause the instability issues!
could your instability problem be a result of an insufficient PSU? with OC the cards draw up to 450 Watt each, and depending on your mobo, cpu and other things and the efficiency of your PSU this could cause the instability issues!
i know its the power, but its not my psu, my psu is 1500W. the instability is because i set high clock and low voltage (limited in ubuntu). i read some articles about 6990 overclock and they say for 1000mhz core it needs about 1.2v -1.25v. and in ubuntu amdoverdrivectrl its limited at 1.175v, thats max in ubuntu... i want to know if there is a way to increase voltage more then 1.175v in ubuntu... or should i use windows.