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What's the latest popular speculation on coin exchange value?
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Is anyone just running hp7 at default?
What, if any, are the preferred changes for i72600 and AMD FX830?
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People starting to mine should know that by now block finds are rare even on i7 3770k @ 4.4 !
I used to find a block a day and I have found none during the last 72h...
same here |
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with 4 7950 and voltage tweaking,
I get ~ 2400 Kh/s / ~640 Watt at the wall.
How much wattage do you think 2 7970's would pull? |
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Would two 9790 graphics cards draw more power than the AMD FX 8350 (8 core) when they are running to the max?
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I'm currently mining YACoin (a Scrypt-jane coin, so it's a bit different than normal Scrypt coins like Litecoin): | GPU: | Hashrate: | Power consumption: | Cheapest Price: | | 7790 | 57 kHash/s | 50 Watt | € 102 | | 7950 | 94 kHash/s | 200 Watt | € 226 |
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The 7790 has more than 60% of the hashrate of the 7950 at only 25% power consumption and costs 45% of a 7950. So I's say the 7790 is the smarter choice, you just need more cards  I will check with Litecoin in a minute. Good points  |
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MSI Z77A-GD65 is what I have. You can run 7 gpus on them. They are very popular on the forums as well. http://www.amazon.com/gp/product/B007QWIA52EDIT: I should add you need to use an Ivy Bridge Processor for the last PCI slot to be active. Thanks |
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General consensus is that the 7950 is the best bang for the buck.
I believe the 7750/7790 aren't too great for scrypts.
Sorry, I have edited my OP, I meant 7950 and 7970 and above. |
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Thinking of getting a motherboard with maximum gpu slots for litecoining. Assuming I am running a state of the art gpu 7950/7970 or above, can anyone advise on motherboards I should look at?
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You should be able to get away with running the gpu fans at 80. I've left my fans at 70 for the past two years, and they haven't died yet. For testing purposes, try running the fans at 80 with a small fan blowing on it. It should bring down the temps a few degrees.
Thanks, I will try this tomorrow when I get the additional fan. Also, I remembered that the cgminer.conf file has temp overheat and cutoff options. They may have something to do with your computer shutting down. "temp-cutoff" : "90,90",
"temp-overheat" : "85,85",
"temp-target" : "75,75", Are you suggesting I add this to the config file I listed above? ***edit*** I just re-edited my previous post - that is my bat file listed there. I am not running it with the config file. I am running it from the bat file. |
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GPU mining only sitting on 19 C
Well that's not right at all... typo, or is that what it's actually saying? Maybe we have some confusion there - I was referring to the CPU temp while running GPU mining. The actual GPU's are running much hotter - atm one runs at 85ish and the other at 67ish - I will be adding another fan to help the hotter card. 85'C is a little hot IMHO. What gets me though is that you said in your OP that it only shuts down once you've started the Litecoin mining. What program are you using? Try using the newest version of Cgminer if you already aren't. You might have something improperly configured. It's true that it was shutting down when I used the litecoin miner, but after making my original post it ran successfully on litecoin for 45 minutes, and so I tried adding the primecoin miner and it crashed. I have since restarted litecoin and it has now been running 2 1/2 hours. But I figure if I start primecoin it will crash again. I plan to let it (litecoin) run overnight to see what happens. I am using cgminer 3.3.1. I am adding on a new fan for that hot card tomorrow so hope to see that problem rectified. Here's my litecoin bat file: cgminer.exe --scrypt -o stratum+tcp//ltc-stratum.kattare.com:3333 -u xxx -p xxx --intensity 13 -g 2 --thread-concurrency 8192 --lookup-gap 2 --gpu-powertune 20 --gpu-fan 65 --auto-gpu --no-submit-stale |
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GPU mining only sitting on 19 C
Well that's not right at all... typo, or is that what it's actually saying? Maybe we have some confusion there - I was referring to the CPU temp while running GPU mining. The actual GPU's are running much hotter - atm one runs at 85ish and the other at 67ish - I will be adding another fan to help the hotter card. |
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Also, try and get a kill-o-watt or something to measure the power draw from the outlet.
If you plug a kill-o-watt you will see up to 380ish upwards on script depending on setting on each gpu. As long as its like mine. There are spikes and variances. But with a I7, and fans, cpu heatsink, HD, etc... chances are you need bigger. A kill-o-watt could confirm this though watch it once its mining see how close before adding in primecoin's.
Does this device measure what it is pulling from the wall connection? If it is shutting down because it is drawing to much power from the wall supply, this would shut off all appliances connected there wouldn't it? I ask this because I have another appliance connected at the same plug and it is not being affected. |
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Yup, basically the same story for me. Then again, one mining rig that had this issue stopped having it and have now an uptime of several days. I have not had time too look into it.
Interesting, because mine has similar inconsistencies - for example it would not GPU mine at all (shutting down) but now it is GPU mining fine, only shuts down when I add CPU mining to the mix. |
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GPU mining only sitting on 19 C
Well that's not right at all... typo, or is that what it's actually saying? Tested GPU mining again and that was still around 20C jumping up to max 25C |
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Is the breaker blowing, or is it just the computer shutting down? You might not be supplying enough power from the wall and/or PSU.
It is just the computer shutting down. |
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Just ran the CPU test.
GPU mining only sitting on 19 C
CPU mining only Sittting on 63C
Ran them both at the same time and it shut down almost instantly with no discernable CPU temp increase.
BTW the motherboard is a Gigabyte 990FXA-UD3
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CPU overheat - use a program like CoreTemp to check your cpu temps
Thanks, I'll give it a go. What sort of temps should I see if all is healthy? |
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What brand PSU? Not all brands are equal. Gonna guess PSU. Post your specs. You might be overloading a rail or something.
The brand is "cooler master", model GX 750W Bronze. It has a 5 year warranty. Try just with graphics cards and does it run fine? If it does chances are you need a bigger PSU or dual PSU's
Initially it was crashing on just the graphics cards alone. But interestingly I just gave it a run on graphics cards only and it ran fine for 45 minutes, so I tried adding the cpu miner as well and it crashed immediately. |
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Where did you get a Scrypt ASIC miner btw?
I don't have a ASIC miner. |
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