impropper overclovk symptoms ?

[martin.po21]

Sorry, but none of those programs suggested will stress the GPU in a way that hash cracking will. Graphics stress testing mostly hammers the FPU, doesn't really touch the ALU.

For stress testing GPUs for hash cracking, you can either use md5stress, or run oclHashcat with -w 3 -m 900 for a few hours.

This is exactly what i was looking for!
No other tool mannaged to stress gpu like hashcat does, at least temperatures were much lower.

Thank you!!