Just ordered one of these to replace the stock cooler on my Powercolour X1800XT 512. I was wondering what thermal paste would be the most efficient? Would it be better to use some AS5 or the paste supplied with the cooler. I assume the paste that comes with the cooler may be best as it's specifically designed for the job but thought I'd ask you guys for your thoughs. Also please could those who are using one of these coolers also give me an idea of what increase in ambient case temps I can expect (the cooler doesn't exhaust hot air out the pci slot like the stock cooler). I'm cooling my CPU with a ninja passively at the moment so may have to look at trying to get more efficient airflow to keep case temps down. My case temps are usually around 32deg but have been as high as 35deg in this hot weather so I'd like to know how this Accelero X2 will impact temps. Looking forward to a quieter PC though I must admit. Why they can't supply a cool and quiet cooling solution in the first place with the more expensive higher end cards is beyond me anyways thanks for any pointers.