Anyone with nv cards, particularly sli seeing card usage dropping a lot post update? My 780's boost to 1124 and 1097, but lately usage is all over the place and clocks dropping as low as 800mhz. Temps are an awful lot lower at 65 and 55c, normally at least 76 and 65c. Whilst this is obviously pretty ok it seems a bit odd. Thought it may have been due to running a stock cpu, but its the same at 4.8ghz. Benchmarks such as valley and firestrike are returning expected results.