Win7 + drivers 15.12 (!!!)
3*7950
average speed ~30 sol/s (10 per card @ stock clocks, mem striped)

On 2 other systems which are almost identical it doesn't work
One is with same 15.12, the other with blockchain drivers from 27.07.2017, both Win7 with 4 * 7950s

Is adding parameters to control intensity/memory usage possible? Or more detailed debug info.