Post by miseree on Jan 11, 2014 18:39:31 GMT
For varying hash rate on a pool, it is normal to see some fluctuations on pools, I'd say +-30% after you've been mining awhile. This has many things to do with how the shares are accounted for on the server and isn't anything to worry about. Just make sure it floats around your expected hash rate. Check the pool's charts and make sure your are averaging where you expect to be.
Now if you are getting large swings in your local cgminer window, then something else is going on. Try a thread concurrency of 8192 and you should be able to go a lot higher on intensity 16-18 (when not using your computer for anything but mining). At those settings a 6770 could be expected to hash 175-200kh/s. So the range of 375kh/s doesn't seem reasonable at your current settings... The best way I have found to 'tune' a miner for use while using the computer is to alter the intensity and leave all other settings alone. If you have an aftermarket card that supports overclocking/voltage modes, try to use as low of a voltage possible that will keep the computer running. This will minimize thermal throttling.
Things to watch/try:
- Ensure your PowerTune setting is 20 (will prevent the gpu from throttling when power threshold is exceeded) (configurable in cgminer or in AMD Catalyst)
- How are you setting your gpu and memory clock settings...or are you? There are a number of ways to set clock and voltage for your card. This is useful if you are having temperature issues.
- Review this guide link and make sure you are doing the 'setx GPU_MAX_ALLOC_PERCENT 100' part in your batch file
- Try running gpu-z to get an idea if you are throttling (watch voltage, temperatures, fan speeds, gpu load, and power consumption)
- CPU load can affect hash rates if you are really taxing the system
- Watch your cgminer window closely
What does the top line of your cgminer window say? include your hash rate (5s and avg), A, R, HW U and WU?
As far as the noise with cpu and gpu loaded, can you determine if it is the cpu fan or the gpu fan? Is your case well ventilated? Open? How are you going about loading cpu and gpu?
not sure if that answers your question or not, but it's at least a few things to try.