49 k is not bad. Did you end up staying with the 7 treads for the CPU? All you need is to put the rig in a Danish open window and then shoot for 4.2 GHz. I open one from time to time and see a 10 degree C drop on my GPU's. My hardworking hex still struggles go higher then 40 C @ 4.1 GHZ in its 0-5 C environment. I did have an EUE (core communication something) @ 84 % but completed it in the second run, so I will stay at 4.1 GHz/1.26 V but it is tempting to go higher when temps are that low.