I have a serious performance problem with my mining setup that I'm hoping someone here can help with.

First of all, it isn't a dedicated miner - it's my desktop PC, running Windows 7 64-bit. I have a pair of HD 6670's in it, one is driving two monitors, the other is dedicated to mining. Before I screwed it up today, I was getting decent performance - about 110-115 Mhash/sec from both cards (the card driving the monitors was set at dynamic, the other card at 9). I was running Catalyst driver version 12.4 and after doing some reading here decided to downgrade to 11.6, the recommended version for mining.

So I uninstalled 12.4, rebooted, installed 11.6, rebooted again, and suddenly my performance plummeted to about 30-40 Mhash/sec on the card driving the monitors and about 13-14 on the secondary card! I found out that I needed to disable ULPS, so I did but that didn't make any difference.

So then I decided to revert back to the driver version that I was running before that was getting decent performance (even though it isn't the recommended version). I went through the whole uninstall, reboot, reinstall, etc. -- making sure I removed every trace of Catalyst I could find (including all "ATI" and "AMD" keys in the registry) in between. I'm still getting shit mining performance. I'm at a loss on what to try next. Any ideas? I'll be happy to post my config and any more info you need.

On a side note, does anyone have the FirePro V4900, and does it work with cgminer? How's its performance? I'm probably getting a new PC in a few weeks, and that's what's on the specs sheet for it.

If you change driver/sdk combo and wish cgminer to use the new combination for its performance, you must delete any .bin files generated by cgminer first, or extract the cgminer archive afresh (for the same effect).

A major factor for the popularization of Linux in business environments was unsanctioned admin/user installation at workplace data centers and workstations.

Exposure. Without awareness, an idea doesn't spread. Some businesses may reject Bitcoin, but others might investigate and possibly embrace it - not necessarily in a mining capacity. As a technology-savvy business owner, I would be interested in a method that could generate additional income using the equipment I already have.

Only 36 hours until I upgrade from 2.4.1 to 2.4.2 - it will then be a continuous 30 day run

Any tweaks for a 5870 and 5970 mining i tried it and i got alot less ouput then using GUIminer with Phoenix v1.6.2 using these flags on Phoenix v1.6.2 -k phatk2 VECTORS BFI_INT FASTLOOP AGGRESSION=7 i get 480 on the 5870 and 430 on each 5970 gpu.  My 5870 is clocked at 1070mhz/700mhz and the 5970 is clocked at 970mhz/500mhz.

At best, that post was off topic and abusive.

My PC is on 24/7 anyway, and having it mine while I work isn't consuming any more resources or reducing my productivity. After hours, it's perhaps using a little more power than it would otherwise.

I don't even know why I'm explaining or defending myself to you people, frankly it's none of your damn business.

Can anyone recommend me which ATI Catalyst version works well with Ubuntu 12.04 and cgminer 2.4.2?

Exactly. We don't encourage you stealing employer resources here in this community.

Helpful hint for stealing from employers : instead of mining ( slow stealing ) just grab a spare RAM stick from the computer. Or steal a PSU and sell it on eBay or just plain steal the whole desktop and claim aliens abducted it !

Calm down guys, for fuck's sake it's not like he's a botnet operator asking for help (which has happened).

Hi. I'm having some issues, I don't know if it's because of the miner or the pool. When my miner(cgminer 2.4.2) detects by longpoll a new block, the following shares are rejected(like 10). I'm having total 6% rejects because of this. Does anyone experiences that?(I'm with Slush)