Result Analysis and Discussion
Efficiency
|
| Load |
Pin(W) |
Pout(W) |
Efficiency |
| 10 % |
94.25 |
86.88 |
92.18 % |
| 20 % |
183.99 |
173.77 |
94.44 % |
| 50 % |
461.50 |
436.92 |
94.67 % |
| 100 % |
944.10 |
877.54 |
92.95 % |
The 80Plus Titanium certification
requirements (90% - 92% - 94% - 90%) are surpassed especially at 20% Load. The full Load
efficiency is a bit higher at 230V AC. This is the case with most of todays PSU's an it mainly
originates from the reason of lower losses in the AC filtering stage and the PFC at
230V AC. The 230V AC 100% Load efficiency is 90.68%.
Output Stability |
| Load |
Rail |
Loading(A) |
Output(V) |
| 10 % |
3.3V |
1.07 |
3.37 |
| 5V |
1.07 |
5.03 |
| 12V |
6.23 |
12.23 |
| |
| 20 % |
3.3V |
2.14 |
3.37 |
| 5V |
2.13 |
5.02 |
| 12V |
12.44 |
12.26 |
|
|
| 50 % |
3.3V |
5.34 |
3.36 |
| 5V |
5.30 |
5.02 |
| 12V |
31.14 |
12.34 |
|
|
| 100 % |
3.3V |
10.59 |
3.34 |
| 5V |
10.59 |
5.00 |
| 12V |
62.1 |
12.44 |
The Voltage Regulation of
this PSU is very good. It makes use of a DC-DC topology. This means, that the
Seasonic Prime Titantium 850W is mainly a 12V PSU and then generates its 5 and 3.3V from 12V.
This is a modern approach, and since the Load is mainly on 12V it makes a lot of
sense. For almost any PSU which makes use of this topology crossload tests do
not present a problem.
|
Noise |
| Load |
|
| 10 % |
Noiseless |
| 20 % |
Noiseless |
| 50 % |
Noiseless |
| 100 % |
silent |
If we listen closer with the power supply, there is no noise until 50%. The Seasonic Prime Titantium 850W is a semi passive power supply and the fan
kicks in, when 50 percent load is being surpassed. Even at 100% load the unit can still be described as silent.
In Win Classic Series C 900W Review 