is there any tech guru?

why GTX690 hashing on K8x32 with
10000 khs and 17% load but with K1000x16 with 500khs and 50-98% load ?

why mine GPU if CPU gives 2mhs at pool?!

i cant get into that cudaminer after cgminer

WTF??

http://clip2net.com/clip/m120883/1391753501-clip-12kb.png