Hey guys ive been running g.skill rip jaws 2 x 8gb and it has been giving me kernel panics. I"m thinking the mac does not like them. Any way "m keen to order 32gb of different ram and would like peoples opinion on whats working good in there system. Ive read people running this are having no issues: http://www.crucial.com/usa/en/memory/bls2k8g3n18aes4 But there site says its not compatible, I was also looking at kingston hyperx http://www.kingston.com/en/memory/search?DeviceType=2&Mfr=APP&Line=iMac&Model=85755 The 1st hyperx module on display. I"m looking for the best/fastest quality ram to go into my imac that wont give me kernal panics cheers! If you have other recommendations please share!