CCminer for Monero help 2 gpu's

[BL4CKFIN]

Hello, Im fairly new to mining and cant seem to find the answer to this question anywhere.

Ive been mining with CCminer for a few weeks now on a gtx970. After cleaning out my closet I realized I had a gtx 760 gathering dust so I threw it in my mobo.
im having trouble figuring out what to put in the batch file to get CCminer to mine from both cards

my original batch file is this
ccminer.exe -a cryptonight -o stratum+tcp://xmr.pool.minergate.com:45560 -u email -p x

when I run that it runs fine but only 1 card

Ive tried using this configuration but it seems like ccminer is just using my gtx970 and splitting its hashing power into 2. it will say GPU #0 (null) and then GPU #1 GTX970

ccminer.exe -a cryptonight -o stratum+tcp://xmr.pool.minergate.com:45560 -u email -p x -t 2

ive also tried using this line but when I open the batch file it just closes immediately

ccminer.exe -a cryptonight -o stratum+tcp://xmr.pool.minergate.com:45560 -u email -p x -d 0,1

any help would be greatly appreciated.
Thanks!

[bathrobehero]

A GTX 760 is a compute 3.0 card so it might not even work with your ccminer if that requires a newer version - I have no idea if it does.

You could try only using -d 0 and then -d 1 to see which card is which adn if it can even work with a 760.

You might also want to try a different Nvidia driver because the GPU #0 (null) part is weird.

[cptfisher]

they have different Compute technology likewise

[BL4CKFIN]

Thank you guys for the replies. So if I were to get a second gtx970 would the correct command be -d 0,1? Or is it -t 2?