I LOVE MY VF-700CU. It dropped my idle temps from 56C to 45C, and I couldn't play games without having a fan blowing into my case, now I can play games with the case closed, and with the graphic card overclocked to 590/1200 without artifacts. i'm going to try to get 590/1210 soon. It's VERY easy to put the heatsink on, getting the old one off was my problem. I had to cut the cheap plastic spring things off to get the old cooler off, then I used 91% rubbing alcohol and a q-tip to clean off the old Thermal Interface Material (TIM) off of the GPU. Once it was all ready, then I put on the TIM that came with the zalman, spread it around the chip, and then screwed the zalman on. On a difficulty scale, 10 being the most difficult, for installing it, I would give putting the zalman on a 3/10. The whole process (including getting the old cooler, TIM, and ramsinks off), I would give a 6/10. It's still not too bad really.