Nvidia GTX 650 – 150 h/s

Scratchpad: 2MB

"gpu_threads_conf" :
[
// gpu: GeForce GTX 650 architecture: 30
// memory: 951/978 MiB
// smx: 2
{ "index" : 0,
"threads" : 68, "blocks" : 6,
"bfactor" : 2, "bsleep" : 0,
"affine_to_cpu" : false, "sync_mode" : 3,
},
],

I don’t know how to find-tune it, no way to eek out more hashing of it.