So I've a Zaber Sentry (ROG X470-i) build with a 2700 and a C7 Cu (with TG Kryonaut). While the C7 Cu is a great cooler, the fan is a pain when it kicks into high RPM. So, I got a used Noctua L9a cooler (for about the same money as a new NF-A9x14) because it comes with the 2500 rpm fan; if you buy the fan from Noctua, they gimp it down to 2200 rpm.
So, I ran Prime95 on the C7 Cu for 30 minutes with both fans and the results are interesting. The 2700 was clocked @ 3.6 GHz with a 1.15 Core voltage value.
The max temperatures I got were as follows:
- C7 Cu with stock fan (2500rpm): 91.2 C
- C7 Cu with Noctua fan (2500rpm): 85.0 C
Wasn't expecting the Noctua fan to get me better cooling results AND less noise.
I'm planning of trying 3 more enhancements:
1) Liquid metal (Conductonaut)
2) Fan duct for the Noctua fan
3) Additional NF-A4x10 (the 12V one) above the NVME
I hope these'll help shave off another 5 degrees or so; I'd hope a little more but 5 C would be great.
Anybody planning to use the C7 Cu with a Noctua fan inside a SFF build, try finding the 2500 rpm option if possible. It's worth it.