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Recently rebuilt my SO's PC from scratch and everything was working fine until I decided to switch out her HD4870 for a GTX570. To cut a long story short, her fans are now working overtime to keep her PC cool and I'm a big stickler for having a PC quiet (as you will see in the choice of components below). My aim is to bring the fans down to a low level when under heavy load (as are they are in my machine).
Her current configuration is as below:
Case: Corsair 550D
PSU: Seasonic X650W
MB: Gigabyte GA-Z77X-D3H
Memory: 8GB Corsair Vengeance LP 1600Mhz
HD: 120GB Corsair Force 3 SATA III
Seagate 1TB Hard Drive SATAIII 7200rpm 64MB Cache
CPU: Intel Core i5 3570K (OC'd to 3.8Ghz)
GPU: Asus DirectCUII GTX 570
Cooler: Corsair H80i (running fans in push-pull and they have been switched for Noctua NF-F12)
System Fans: 2 Corsair fans (came with the case) in the front of the case pulling air in, 2 Noctua NF-F12 fans on the H80i pulling air into the case from the back, and 1 120mm Nexus PWM fan pushing air out of the case at the top. All the fans (short of the Noctua's) are running on a silent profile off the MB.
Now I appreciate that I only have 1 fan exhausting hot air from the case and that the GTX570 throws a lot more hot air into the case than the HD4870 (wasn't reference design so was chucking hot air into the case as well), so I can probably solve this by putting another Nexus fan at the top of the case to help expell the hot air, I just wanted to double check with you guys that you think this would solve the problem?