So, you do not have any case fan for intake/exhaust. Right? The pull fan of the U9S, more or less, acts as an case exhaust fan?
The CPU temp is definitely much worse than I expected. I can only assume that with only the U9S fans, there's no fresh air being drawn in and the fans aren't doing that good a job at exhausting the hot air. I was thinking of going to a window panel one day, so would like to avoid a side intake. Maybe a slim 92mm fan on the rear exhaust of the case?
Here are some non scientific stats:
- Fans: still no bottom intakes, only fans are on the U9S with 2 A9s in push/pull
- Side panel on with side mount and side fan filter attached
- Ambient temp is ~26 degrees
- CPU voltage to set to Normal as per suggestion from @Haveloc
- GPU fan are set to auto
- CPU idle temp from Ryzen Master, max from HWMonitor
- GPU temp from HWMonitor
- I only kicked off a game for 15 minutes or so just to see how it went, so the GPU probably didn't get worked that hard.
Idle: CPU 43 degrees, GPU 39 degrees
Gaming load: CPU max 81 degrees, GPU max 66 degrees
Oddly enough, whether I had the CPU fans set to constant max RPM or the silent profile made very little difference to the idle temperature (43 vs ~46 degrees).
@Haveloc, looks like our GPUs are very slightly different. This one is
mine (50mm high) and here is
yours (40.24mm high). They don't make these things obvious! I might see if I can do without the stock shroud/fans and use the Noctuas only before going to spend the money for the Arctic Accelero.