^^^ Some users claim sgminer-gm can put a Hynix card over 1k, I think wolf claims 1.2k but he's a special case. I recommend the MSI Armor RX580-8GB (Samsung) for use with Claymore's miner, you'll do 1k no problem with the ubermix straps and it's also the cheapest card to buy.

Carocus might want to try this Hynix strap, it's faster than the 1500 strap and he should be able to get 900+ H/s on that Gigabyte.

Hynix: