I've been running Heaven for 1 hour and all seems stable even with the Nano Powerlimit set to +50%
Powermeter at the wall reports:
Peak Power: 451W
0.17kWh so 170W average power consumption over 1 hour.
The RSP-1000-24 is fairly efficient, its typical rating is 88% for the 24V version.
I'm going to run Furmark next at the previously impossible resolutions and see if the system crashes.
AND it works, I'll leave it running for a little bit to get some data.
I think we are safe to say that running a R9 Nano of a 350W AC-DC Adapter is not enough to guarantee a 100% stable system.
The RSP-1000 has fans that are controlled by powerdraw.
What is funny is that Furmark forces the Nano to change the clockspeed between 700MHz and 880Mhz and you can hear the RSP-1000 rev up and down as the clock and with it the powerdraw changes.
Here are the Furmark runs/data in the same format as a couple of posts back
Furmark 1080p 0xAA = Seems stable after 5 minutes (PowerLimit +50% - Fanspeed Fixed 100% - GPUTemp 63C - Core Clock ~840MHz - Core Voltage ~1.00V)
Furmark 1080p 2xAA = Seems stable after 5 minutes (PowerLimit +50% - Fanspeed Fixed 100% - GPUTemp 63C - Core Clock ~800MHz - Core Voltage ~0.96V)
Furmark 1080p 4xAA = Seems stable after 5 minutes (PowerLimit +50% - Fanspeed Fixed 100% - GPUTemp 67C - Core Clock ~967MHz - Core Voltage ~1.14V)
Furmark 1080p 8xAA = Seems stable after 5 minutes (PowerLimit +50% - Fanspeed Fixed 100% - GPUTemp 64C - Core Clock ~1000MHz - Core Voltage ~1.19V)
I might have some more info:
Why did Furmark crash at 0xAA and 2xAA before but not at 4xAA and 8xAA?
0xAA Peak Power was 457W
2xAA Peak Power was 450W
4xAA Peak Power was 410W
8xAA Peak Power was 315W
Peak Power is higher when using 0xAA and 2xAA. 4xAA drops about 40W and 8xAA a whopping 100W!
Remember the 1024x786 crashing?
Now 614W Peak Power!
Rerunning the test and the highest I've seen now is 542W. It is a very short peak.
Running at a regular Power Limit of 0%:
Furmark 1080p 0xAA (PowerLimit 0% - Fanspeed Auto 40% - GPUTemp 68C - Core Clock 727MHz - Core Voltage ~0.93V)
Furmark 1080p 2xAA (PowerLimit 0% - Fanspeed Auto 40% - GPUTemp 70C - Core Clock ~687MHz - Core Voltage ~0.92V)
Furmark 1080p 4xAA (PowerLimit 0% - Fanspeed Auto 38% - GPUTemp 72C - Core Clock ~796MHz - Core Voltage ~0.98V)
Furmark 1080p 8xAA (PowerLimit 0% - Fanspeed Auto 100% - GPUTemp 64C - Core Clock ~1000MHz - Core Voltage ~1.19V)
0xAA Peak Power was 399W
2xAA Peak Power was 428W
4xAA Peak Power was 375W
8xAA Peak Power was 321W
at 0xAA and 2xAA I consistently see the power meter hit 350W
at 4xAA it is lowered to hit 320W consistently
at 8xAA I see it rarely goes over 270W.
Even more facinating is that the power meter goes from 60W all the way to 350W in seconds, the powermanagement is real guys.
Only at 8xAA does the power meter stay very stable between 200W and 270W, almost never dipping below 200W or going over 270W. This is most likely because it is no lowering clockspeed because of power but temperature reasons.
