getting between 750-1000 khs per card.  running 4 cards.

gets me between 3-4 ltc a day.

--scrypt --shaders 2048 --thread-concurrency 8192 --intensity 13 --worksize 256 -g 2 -v 1 --lookup-gap 2 --auto-fan --gpu-engine 1085 --gpu-memclock 1500


4 sapphire 7970 3gb cards.  runs between 75-82C for the most part.  creates a ton of heat so i had to create an exhaust to go straight out the window.  be good to heat the house for the winter.. haha

for some reason guiminer shows 2.5 mh/s  but coinotron only shows 21kh/s.  anyone have any ideas?

i emailed support, but just haven't heard back.  maybe i should just try a different pool

i cant even remote into my pc when its mining.  monitor is only way.  but i dont see much prob with that.  i guess i can consider this one solved.

now to find a good config.  i dont seem to get the same results as others do.. would love to get the cards all running at 650+

oh ya.. all my cards run about 66 degrees Celsius.

i figured out part of my problem.  i have all my cards on powered pcie extensions and the male end of the power connector would pop out when plugging it into the power supply connection.  this would cause a loose connection.  assuming this was causing a bad power connection and making my rig act inconsistent.  now all 4 cards are running at similar speeds.  around 550 mh/s.

i still get some fluctuation with the hash rates, but not nearly as bad.

now i just need to get a config that gets me closer to 650-700 per.  i have a 1250watt ps so that shouldn't be a problem.

if you dont have powered pcie extensions/risers then that will absolutely cause a problem.   i found some people wondering if they need them.  yes you do for these cards.  i found that cablesaurus has the 16x to 16x risers.  not quite sure why they are so hard to find.

anyways.. just like any troubleshooting... check all your connections! 

I recently built a rig and have an asrock z4 mobo and qty 4 7970 gpus.  newb to all this and first build.

i had only 2 installed originally and they ran between 580-650 mh/s.  is it normal for the cards to vary so much from minute to minute?

also when i put in my 4th card it's hash rate barely hits 300 mh/s.  i'm using bitminter and thought about trying another miner, but being a newb i wasn't sure if that would have a large impact.  

help is appreciated.  i searched quite a bit but did not really find much regarding a 4th card or variable speeds when mining.

thx!!

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wut up everyone!

hey is there a good skype chatroom for btc??  nice to get one of those up and running if not.  lets chat about it!

nice setup, i was thinking about doing this same thing, but then it seems like the other hardware is relatively inexpensive.  i rather have 2 machines running instead of just 1 in case there are issues.  like the power supply decides to fry and takes ur whole system out.

i'm just paranoid i suppose.

thx for the link.. good info.

you should put the restrictions on the registration page so people who have no idea about restrictions aren't lost on why they are restricted =)  just my 2 cents.. or .0000000001 btc.. haha

read the readthis newbie... 5 posts.. etc etc...

good info.. i've been looking like crazy at cards.  i'm gonna try and setup 4 cards with a 1250 power supply.  any reason most people only using 3 cards instead of 4?