Agreed, turn your fans around to exhaust to start with. Being an intake, this is just blowing any hot air into the case, making your gpu cooling that much less effective. Cpu temp say raise slightly but that normal, especially under gaming conditions.
Your pump speed as reported by cpu_fan header should be 2000rpm+ I've seen it as high as 4000rpm. I personally prefer to use cpu_aux for pump and cpu_fan for the fans, backwards from Corsair directions. Cpu_aux is uncontrolled by bios or software for most midrange boards, whereas cpu_fan is controlable and doesn't always use a full 1 amp. Check your bios settings. Make sure, if the pump is on cpu_fan, that it's set to 100% duty cycle, smart cpu is disabled etc. You want it to run maxed...