I don't mean any offense, but your temps are way off. And when I say way, I mean by over 20°C. Don't forget that the NF7 has an in-socket thermistor, which is incredibly sensitive to ambient air. By doing a mod like you did, one is effectively reducing the ambient temperature to 11°C; by around 15°, considering normally case temps should be around 26°C. If you're lowering the ambient temperature by 15°C, you are decreasing the core temperature by the same 15°; the relation is always direct. Normally your temps would be in the low 50's; they'd be in the low 30's now. Not bad, but not beyond what straight water can offer.