Wow, these are the first video cards to push my 1kW Silverstone PSU to its limit.
Ater modding the second card, i got repetative system reboots at the exact same spot in canyon '06.
After a lot of testing each card seperately etc, i realised maybe my PSU was kicking, so i unplugged a water pump that was connected but doing nothing and suddenly i got stability again.
So now my whole water system for CPU is running on an el'cheapo POS PSU, and the system is finally ready for some volt modded benching.
Just trying to stabailise 860/1020 '06 now.