Vivo 24k 650W Power Supply

REVIEW INFORMATION
SUPPLIED BY: Vivo
MANUFACTURER: Vivo
PRODUCT: 24k 650W
PROD LINK: Vivo’s current products
PRICE: $72.99 @ Amazon
Price is at time of testing!

As is the case with all my reviews, we’ll need a bunch of gadgetry to do all the load testing and measurement stuff my reviews are known for. The FastAuto ATE will be loading things down, with the Tektronix scope, Extech DMM, dual probe thermometer, and Rek power meter measuring stuff.

24k 650W – STANDBY Load Tests
Test # +5VSB DC Watts/
AC Watts
Eff. P.F.
Load Tests
1 0.5A 2.56W/
3.16W
80.9% 0.340
5.11V
2 1.5A 7.58W/
9.55W
79.3% 0.480
5.05V
3 3.0A 14.88W/
19.9W
74.8% 0.542
4.96V

Up first is the standby testing, of course. I see no major issues here. Regulation could be better at 3% on the nose, but that’s still a decent result.

Efficiency looks to be average to above average. Let’s get the main tests done.

24k 650W – Cold Load Tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
AC
Input
Eff. P.F. Intake/
Exhaust
Progressive Load Tests
1 1A 1A 4.3A 65.8W/
76.7W
117.6V 85.8% 0.966 27°C/
28°C
3.390V 5.08V 12.21V
2 1.5A 1.5A 9.6A 137.1W/
152.2W
118.0V 90.1% 0.978 28°C/
29°C
3.381V 5.06V 12.20V
3 3A 3A 24A 326.8W/
358.7W
117.9V 91.1% 0.989 28°C/
31°C
3.354V 5.03V 12.16V
4 4.5A 4.5A 36A 485.4W/
542.1W
117.4V 89.5% 0.990 29°C/
34°C
3.330V 5.00V 12.10V
5 6A 7A 48A 650.1W/
741.0W
116.8V 87.7% 0.993 30°C/
38°C
3.304V 4.97V 12.05V
Crossload Tests
CL1 12A 12A 0A 104.0W/
124.6W
118.0V 83.5% 0.980 30°C/
35°C
3.307V 4.96V 12.19V
CL2 0A 0A 52A 631.5W/
713.6W
116.4V 88.5% 0.993 30°C/
37°C
3.357V 5.04V 12.05V

We’re starting off with a bang. No, not a literal one, a figurative one. This unit didn’t just skate by on Gold, it went right for Platinum on tests two and three. Test five misses it, but that’s Ok. We needed Gold, and this thing did that easily.

As was the case with the Forza unit, I had some issues getting exhaust temps with this unit. Because the airflow comes around that wide primary heatsink, all the hot air is pushed over on the edge of the grille. Even so, the unit ran reasonably cool and I didn’t hear the fan.

I won’t lie, though, I was hoping for better voltage stability from this unit. It does have extra vsense wiring to the motherboard connector, but clearly this is something Sama needs to work on yet. From left to right above, I get 2.61%, 2.20%, and 1.33% for load regulation. That’s average, very good, and excellent respectively. When we average out the results, we get 2% almost on the nose. That’s firmly in the very good range, and more than enough performance for a budget Gold unit.

What do you say we go looking for that smooth and continuous point now? Next page, please.