I disabled SLI on mine, it was behaving weird with it. I get roughly ~2.6/2.7 per GTX 660 card now. I can't specify a decent -l number though, it errors out every time I do it. It only works with -L 2.

I still can't figure why the auto tune causes Cudaminer to crash with 2 GTX660. Still can't get this to work. I have SLI turned off. Both GTX 660s have 2g ram. There's no overclock on either one, stock speeds on everything.

Can someone suggest command instructions to get this working?

Appreciate it!

Having some difficulty with 2 GTX 660s. I've tried with SLI turned on and off. Once the auto tune starts, the driver crashes.

This was running fine with one GTX 660, and I just added a second card. Not sure what's causing the issue.

Here's the commands I'm using- cudaminer.exe -H 1 -d 0,1 -i 1 -o stratum+tcp://usa.wemineltc.com:80 -O username.1:pass

I've tried with the -d command and without. Same result either way. Driver crash.

Appreciate any help. Thanks.

Try...

-d 0,1 -i 1,0 -l K5x32,K5x32 -H 1

Just tried these instructions and no luck. Caused Cudaminer to give a Windows error - stopped working. Didn't get a driver crash though... Any idea if SLI should be turned on or off?

Having some difficulty with 2 GTX 660s. I've tried with SLI turned on and off. Once the auto tune starts, the driver crashes.

This was running fine with one GTX 660, and I just added a second card. Not sure what's causing the issue.

Here's the commands I'm using- cudaminer.exe -H 1 -d 0,1 -i 1 -o stratum+tcp://usa.wemineltc.com:80 -O username.1:pass

I've tried with the -d command and without. Same result either way. Driver crash.

Appreciate any help. Thanks.

Try...

-d 0,1 -i 1,0 -l K5x32,K5x32 -H 1

Thanks for the help - any suggestion how SLI should be set on or off?

I tried a few different settings in the commands, and now I'm getting a memory error once the autotune starts. If I skip the auto tune, the driver crashes. Strange this didn't happen with one GTX660.

Having some difficulty with 2 GTX 660s. I've tried with SLI turned on and off. Once the auto tune starts, the driver crashes.

This was running fine with one GTX 660, and I just added a second card. Not sure what's causing the issue.

Here's the commands I'm using- cudaminer.exe -H 1 -d 0,1 -i 1 -o stratum+tcp://usa.wemineltc.com:80 -O username.1:pass

I've tried with the -d command and without. Same result either way. Driver crash.

Appreciate any help. Thanks.