I'm in Canada so it's a little more expensive for me after the exchange and shipping. I can get my hands on the ES for $30, just have to wait a few weeks and I'm wondering if it's worth the gamble. I'm having a hard time finding an instance of someone using one of these chips on a P6T or P6T SE
FPS is determined by your CPU/GPU, only load times/fluidity would be noticeably affected by the change. You may have been using a slight bit more CPU overhead with your old SATA controller but it shouldn't be enough to produce that kind of measurable difference.