I noticed that spike on vrm1. My GTX280 does the same thing on GPU-Z and Rivatuner, any version. What did it read? Mine is allways 127c and I also just noticed it on your other SS. That makes me feel better. Really nice temps, btw. Better than a stock cooler on the vrms, now thats impressive. If you run Furmark with some AA you will, especilly fullscreen you will see temps sky rocket.

Good work and it looks sexy mounted. Excelent job with cable management in that case, too. This might be the best aftermarket aircooled rig that I have ever seen. Nice!