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I've got AOCLBF 1.75 running vectors, HD5xxx+, fastloop, phatk, 12 aggression and work size 256. CCC 12.3

I was getting a bit over 300mhs at 1000/300.

Now, for some reason, at the same specs, I'm getting 237mh/s

My second card at 900/300 is getting 275mh/s.
The first card at 900/300 is getting 236mh/s

Soo, what gives? Any idea?

maybe it's time to update my software anyway, eh?

Make sure you didnt upgrade to 12.4
I have to close and restart the miner once in a while to get MH/s back.
For whatever reason, if i use the PC for internet,email,movies, and music this happens.
close the miner, reopen instantly and its back to normal.

The pc that is a dedicated miner never has an issue.
ts been running for over a month now and only shuts down for a dusting as needed.

12.3 had a bug which prevented some software from overclocking.
also make sure you are using sdk 2.1, its the fastest for 5xxx (2.4/2.5 is -ok-, dont use 2.6)

how do I know what SDK I'm using and, if wrong, how do I uninstall?

uh, bump.

cgminer -n

just got my new PSU in, I wasn't able to use the full power of these GPUs without it anyway.

1). What's the best catalyst version for the radeon 5830
2). What's the best SDK
2a). how the heck do I uninstall the SDK that I have now
2b). how do I find and install the best version of SDK?

I should also mention that I'm running AOCLBF so I don't have direct access to commands. I'm running windows7

1). 11.12 or 12.1 (I use the former)
2). 2.1 DOWNLOAD (https://dl.dropbox.com/u/9768004/ATIStreamSDK_dev.msi)
2a). Not necessary with 2.1. It's a separate platform.
2b). cgminer -n or gpu caps viewer > opencl tab. the number in (). If its 800+, its 2.6+. If its 700-799, its 2.4/2.5. If its called ATI Stream, its 2.1.
tips at 1BXNapSrzTSfmqSD63e49eh2JvDkeotCxt ;D

btw to make sure your driver is exactly what you installed it as, got to control panel > programs > amd catalyst install manager > express uninstall all amd software, reboot when its done, use driver sweeper (DOWNLOAD (http://www.techspot.com/downloads/4266-driver-sweeper.html)) to remove all amd stuff, reboot again, install driver (install everyhing including the bundled sdk, but we wont use that. its needed for some miner software to detect opencl platforms. you dont need the catalyst control center though, its a memory hog), then install 2.1 sdk after driver done, reboot once more, done. If you use cgminer, make sure to include setting the gpu-platform to 1 to use 2.1 sdk.

do you recommend one GUI miner over another?

I don't use GUIMiner anymore. I switched from GUIMiner to Phoenix 2 when it got updated to version 2 (guiminer doesnt support phoenix 2 because it uses a cfg file instead of command-line arguments), then I later switched to bfgminer (a fork of cgminer) because I needed better pool connection behavior. The hashrates between bfgminer and phoenix 2 should be identical given that I'm using the same kernels and kernel arguments.

For some reason, after I installed ccc 12.1 and sdk 2.1, AOCLBF1.75 is no longer working. It'll show the stats for the GPU but the gpu never starts working. Not too sure what the deal is. I probably should just look into running a ubuntu os with the latest and greatest software

It's been a while since I updated these things.

what is the intensity you are using??

Well, I just installed java and guiminer. I ran guiminer as a test then ran AOCLBF again.

This time, AOCLBF is running. I'm getting about 270mh/s out of both cards running vectors, hd5xxx+, fASTLOOP, phatk, 12 aggression and 256 size with -a3 flag. I'm running catalyst version 12.8

Will work on this:
1). 11.12 or 12.1 (I use the former)
2). 2.1 DOWNLOAD
2a). Not necessary with 2.1. It's a separate platform.
2b). cgminer -n or gpu caps viewer > opencl tab. the number in (). If its 800+, its 2.6+. If its 700-799, its 2.4/2.5. If its called ATI Stream, its 2.1.
tips at 1BXNapSrzTSfmqSD63e49eh2JvDkeotCxt Grin

Next

reinstalled 12.1 and I'm back in the 307mh/s range on the one card overclocked to 1000mhz. The other is at 295mh/s at 965mhz. Not sure if I can bump it up any.