recently build a system for a friend. and when we run the Stability Test with the Stock CPU Fan, The temperature are around 90ish, but the test were able to run more than 3 hours.. However after we changed out the Fan to Cooler Master Hyper 212+ , the Test would fail within 2 mins.. and We disabled the Test for Memory, The Test went on run for over 3+ hour didn't fail, and CPU Temp run at 60C Max,..we then just stressed test the memory and it never showed fail messages..running memtest multiple times, never run into any issue..
System Info
i7 2600 with Stock and Cooler Master Hyper 212+
Gigabyte Z7Zx-UD3H
Crucial Tactical 1600mhz (2 z 8 GB )
ASUS 780Ti
Intel 530 240GB SSD