Butt through Glass

Wow, this file is getting around 50 MB and slowing down my computer. I have a Geforce 8800GT 512 MB, Intel Wolfdale Dual Core 3.0 Ghz, and 2 GB 800 Mhz RAM. Why doesn’t the temperature of the graphics card go above 52 celcius (which is what it is at when it idles)? It can go to 75 celcius when playing Crysis. Shouldn’t it take some load off of the CPU since Photoshop is all about graphics?