Getting "502 Bad Gateway" now
Figures, I just got started on this pool. Was able to mine less than 15min before it went down. |
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Cant wait to see this...
I would guess that IF he pays, the coin will actually come from BFL.
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Can you hint us if the idea was well received, or if it wasn't even listened to?
Yeah, bumping in hopes of an update. I would also, possibly, be interested in something like this... |
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Ive only managed to get my 5770 up to 145-150.
880/1100 didnt help me much. :/
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I see several people reporting incredible performance efficiencies in this thread and I want to know your secret. I'm interested in what settings you are running.
Here's what I have:
- ASRock Extreme 4
- Sempron 145
- 4GB RAM
- USB Flash Drive
- PC Power and Cooling Silencer MKIII 1200 (Platinum rated)
- 4x Sapphire 2L 7950s
I flashed my cards to undervolt them to 1.09V (using Sapphire Twin-X bios). Stock bios was 1.25V unlocked, but needed to flash for Linux.
I run BAMT with CGMiner.
I currently run them at 1050 core/1500 memclock (.7 relation seems best) => ~625kh/s each and my kill-a-watt reads around 950w
Estimating high, lets say everything except the GPUs pulls 100 watts (i.e. CPU/RAM/USB/Mobo), that means each of my cards is pulling roughly 193.5w (@92% PSU efficiency). Using the same estimation of 100w (CPU/RAM/HDD/Mobo), I see people with setups pulling 155-175w (a generous estimation of 90% PSU efficiency) per card and getting better hash rates on top of that.
If someone is able to help me increase my efficiency to these numbers, I will gladly send some LTC your way for your help!
Do you use powered risers? I have nearly the same setup but with 3 cards. I cant help with making your system more efficient, sorry. |
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One of my cards keeps crashing. I have all the default settings applied and after a bit of runtime cgminer scrypt within GuiMiner stops working for one of my cards. I recently started seeing extremely high temps - 100C - I heard my fan going insane and I shut it down. There is plenty of ventilation, I have good power supplies running these cards. I know know this isn't a lot of information but would a bad card cause cgminer to crash or is there possibly something else going on?
what brand card is it? I had some PowerColor HD7950s that would reach some pretty crazy high temps. I have since gotten rid of them. |
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I did have slightly better luck with reaper vs cgminer, however I could not figure out how to setup a backup pool with reaper. That alone is worth the few kh/s loss in switching to cgminer.
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I have my cards set to this in afterburner: Core Voltage 1100 mV Power Limit: 0% (you can bump this up to 10% but your cards may run a little hot) Core Clock: 1075 MHz Memory Clock: 1650 MHz
cgminer settings:
setx GPU_MAX_ALLOC_PERCENT 100
cgminer --scrypt --auto-fan --temp-target 79 --thread-concurrency 24000 --intensity 20 --worksize 256 -g 1 -v 1
Is that overvolting them? Im not sure of the stock voltage is why I ask. |
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ok so i picked up 3 of the 7950 4L models for my 2nd rig. I can't get these suckers to go past ~530kh/s i've tried a ton of different settings and configurations with no go. Anyone have any luck getting 600kh/s+ on these?? Per my post earlier. I have these same cards and can get a max of 530kh/s. If you find any settings that can get you up to 600, let me know!!!  |
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Care to give a little more info? Ive got the same cards and can only squeeze about 530kh/s out of each. Your settings give me 480kh/s  |
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I wish I could get the hash rates I see from some of you out of my rigs!
Ive got two rigs with 5850's, each getting about 320kh/s.
I also just built a rig similar to what this thread talks about, 3 7950's, each getting 500-520kh/s.
Either Im doing something wrong or just unlucky :/
here's my setting with 5850 rig : cgminer --scrypt --thread-concurrency 5760 -I 18 -g 1 -w 256 windows 7 32 or 64b,ccc 12.6 (you may install only amd driver without ccc) and sdk 2.6 My 5850's run linux (BAMT with updated drivers for 7xxx cards, unsure exactly what drivers tho) so those settings did not give me any boost. |
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I wish I could get the hash rates I see from some of you out of my rigs!
Ive got two rigs with 5850's, each getting about 320kh/s.
I also just built a rig similar to what this thread talks about, 3 7950's, each getting 500-520kh/s.
Either Im doing something wrong or just unlucky :/
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I would also like to know if its possible.
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The biggest issue you may face with different cards is that some cards will hash faster with different driver versions than others.
Otherwise it should work, just not at an optimal speed.
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I have a computer thats having problems with litecoin mining on one GPU. The specs are as follows
GPU0: 5850 connected via riser
GPU1: 5850 connected via riser
GPU2: 5770 connected via riser
GPU3: 5850 plugged directly into motherboard
1050watt PSU
OS: BAMT setup to mine litecoins with CGMiner
I can mine bitcoins 24/7 for weeks on end with zero issues with this system, however when mining litecoin GPU3 dies within the first hour after starting to mine. Ive tried reducing intensity and the overclock to stock speeds, neither helped.
Any ideas?
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I created my own multi-outlet box. It plugs into a 3 prong dryer socket. Costs about $50-$70 in materials.  Interesting. Do those plug directly into the PSU? did you make them or buy them? |
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Those of you who run your rigs on 220v, how do you do it? I know some servers are run on 220v and use a PDU (Power Distribution Unit) which is like a power strip. These however are very expensive!
Do you create your own cables/outlets? or am I missing something?
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I know what your saying and am in the same shoes at this point. I bought into bASIC which went bust along with my ASIC dreams. Also consider a ton of others are thinking along the same lines. I think litecoin difficulty is going to explode with everyone switching over to it once ASIC are mainstream on the bitcoin network.
A lot to think about, could be a lot of risk...
Good luck!
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