Hi Groestlers! , see what  in tweCoin ANN page :

Groestl 305w 2x 4,800Khs 57c, 46c  !!! Wrong
factory default 1020MHZ 5700 KH/S Boosted to 1150-12XX MHZ will 6.7 to 7MH/S

tweCoin ANN page : https://bitcointalk.org/index.php?topic=553593.0
INFO From: http://dmdcoin.net/forum/index.php/topic,568.msg1307.html#msg1307