Originally Posted by zmn668
Hi all. I like many features of the CW611 but the lack of an adjustable fan curve is a stumbling block for me. Hoping to tap into the vast knowledge here for some advice...
First the system...
4790K CPU with XSPC WB
2 x GTX780 GPU's with XSPC WB's
ROG Maximus VII Hero MB
Caselabs SM8 Merlin case
Coolgate 360mm x 60mm rad 7FPI x 6 GT AP13 fans in push/pull in front of case
Coolgate 480mm x 60mm rad 7FPI x 4 GT AP13 fans in push in top of case
Swiftech D5 Vario pump with EK X-top
Flow starts at the bottom and works it's way up through CPU, both GPU's and then top rad and front rad.
I have the top rad fans connected to channel 1 on the CW611 and the front rad fans on channel 2. Both channels get coolant temp from inline temp sensors at the out port of the front rad. This should be the coolest point in the loop as coolant has passed through both rads at that point.
I have both sets of rad fans set to 24% min and 100% max with target of 25. This gives me a nearly silent system at idle and 24% is the minimum reliable start up voltage for the AP13 from what I see. My problem is that the fan speeds increase very slowly. For example, I'm doing OC validation on my 4790K and my fans will max out around 56% at 100% load in AIDA64 stability test. Coolant to air delta is about 6 deg C and coolant temp maxes out around 29 deg C with room temp about 23 deg C. This is giving me higher CPU temps than I think I should have with such a beefy loop. The only way I can see to get the fan speeds higher under this load would be to have a higher minimum speed which would defeat my plan for near silence at idle. I wish there was a setting for target temp lower than 25. Of course when I stress the GPU's then temp rises faster with faster fan spin up but I still never reach 100% on the fans. Am I missing anything here? Thanks
Use speedfan and define your own curve. I'd also plug a temp probe to your motherboard, measuring water temp. Then you could adjust fan speed according to coolant temp.
The problem with your CPU probably lies in the IHS: it's not soldered. That's why people get so high temps with such low power CPUs
I'm in that boat too
Besides that, I think that your rads are too thick for such slow fans.