For those who think the $1000 GTX 690’s heatsink isn’t enough, Arctic has announced their new Accelero Twin Turbo 690.   Sporting two massive, yet quiet 120mm fans, ten heatpipes and 86 dense aluminum fins, the Twin Turbo 690 can disperse up to 400W of heat.  As a result, it is supposed to shave off 12°C [...]