Seasonic PRIME Ultra 850 Titanium Power Supply

REVIEW INFORMATION
SUPPLIED BY: Seasonic USA
PRODUCT: PRIME Ultra 850 Titanium
PROD LINK: PRIME Ultra Titanium Product Page
PRICE: $190.54 @ NewEgg
Price is at the time of testing!

Now, we’ll do the load testing. This will go the same way it did for all the other units in this range, with the same equipment.

PRIME Ultra 850 Titanium – STANDBY Load Tests
Test # +5VSB DC Watts/
AC Watts
P.F. Eff.
1 0.5A 2.47W/
2.89W
0.241 85.5%
4.94V
2 1.5A 7.35W/
9.07W
0.438 81.0%
4.90V
3 3.0A 14.49W/
18.5W
0.522 78.3%
4.83V

First, the standby tests. Efficiency looks great, well above average.

2.2% is the magic number when looking at the voltage regulation. It’s nothing special, but above average and more than good enough for our purposes.

PRIME Ultra 850 Titanium – Cold Load Tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
AC
Input
Eff. P.F. Intake/
Exhaust
Progressive Load Tests
1 1.07A 1.07A 6.23A 86.5W/
95.2W
119.0V 90.8% 0.967 23°C/
24°C*
3.325V 5.04V 12.24V
2 1.5A 1.5A 13A 176.7W/
186.9W
118.8V 94.5% 0.989 24°C/
26°C*
3.323V 5.03V 12.24V
3 4A 4A 32A 432.3W/
463.9W
118.0V 93.2% 0.992 25°C/
30°C*
3.318V 5.03V 12.23V
4 6A 6A 48A 647.0W/
703.1W
117.2V 92.0% 0.994 26°C/
33°C*
3.316V 5.02V 12.23V
5 8A 8A 63A 851.4W/
938.8W
116.5V 90.7% 0.997 27°C/
66°C
3.312V 5.02V 12.22V
Crossload Tests
CL1 12A 12A 0A 101.4W/
115.2W
118.3V 88.0% 0.977 26°C/
42°C
3.316V 5.03V 12.25V
CL2 0A 0A 70A 856.7W/
942.2W
116.8V 90.9% 0.997 27°C/
62°C
3.326V 5.04V 12.22V

You will be absolutely shocked… shocked I tell you… when you find out that this unit performed exactly like a Seasonic, here. Efficiency is a fairly clean pass for Titanium, with test three needing my help to get the pass as usual for this efficiency level. Sue me… I have a $300 power meter, not a $3000 one.

Voltage regulation? Awesome, of course. Seasonic promised mythic level regulation and delivered once again. 0.39%, 0.40%, and 0.17%. It’s ridiculous that these numbers have become so mundane to me now, but that’s where we are in the industry. Damn near every Seasonic can do those numbers to the point I end up yawning nonstop through these reviews, yet everybody else save for a few like Corsair and EVGA are still trying to work out how to get there consistently.

It’s good to be Seasonic right now, isn’t it?

The fan operated exactly where you see asterisks above. Never got that loud that I could tell.