My fork is now doing 9.3-9.4 MHASH with overclock on the 980.

10MHASH with +300 on the core, but not very stable.

When the 980 cards came out the fastest miner was messured at 7106MHASH@x11

http://cryptomining-blog.com/3503-crypto-mining-performance-of-the-new-nvidia-geforce-gtx-980/

So my miner is 30% faster, opensource and free.

https://bitcointalk.org/index.php?topic=826901.0