Just purchased an ek supreme hf block and ek coolstream xtx 240 Rad to cool my 2600k with my xspc rs 750 duel bay res and pump. Other than the blocks for my 570s would an extra 240 rad be enough to cool both of them in the same loop
What fans u got on the rad? I ask cos it makes a big difference. I got a 360 rad with 3 fans on it cooling 2 x 560Ti, 2500k and a hard disk.
yes it will be enough, I have my 2600k, 6990, mobo and ram all on the same loop with 2 x 360 rads and 6 1850 GT's @ low speed on push configuration and have nice cool temps.
2x 240 with be more than enough to cool them, even a single 360 would be enough. As already stated, get some high CF fans on a fan controller, and then turn them down. That will keep everything nice and cool. I have a spare Alpha cool 240 rad, not doing much if you are interested. Same as this but with a silver/chrome surround.