I am using Carbon ROM 4.3 with Chronic kernal. The settings were at a min of ~1700mhz and a max of ~2200mhz. Before i set this I let the cpu temp cool to about 23 degrees Celsius. I then set the cpu governor to performance. Then I started running AnTuTu benchmark ver4. After the cpu integer test the cpu froze up. I was cooling my phone using a freezer with the phone on a paper towel which was on a bag of ice. The CPU crashed at the CPU float point test.
After another test I found that my CPU becomes unstable after 2160mhz.
The settings for the posted benchmark were CPU Min at 1674mhz and CPU Max at 2160mhz with the governor set at performance.
Current Phones: Samsung Galaxy S4 L720; LG Optimus G LS970
LG ROM: Stock JB 4.2.2 GS4 ROM: Carbon ROM 4.3 with Chronic kernal
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Retired Phones: HTC Evo 3d; Nexus s 4g; Epic 4g; HTC Evo
Tablets/Slates: Samsung 7 Series Slate running Windows 8 Pro