Mistel Vision MX650 Fanless 650W Power Supply

REVIEW INFORMATION
SUPPLIED BY: Mistel
PRODUCT: Mistel Vision MX650 Fanless 650W
PROD LINK: MX650 Fanless Product Page
PRICE: $159.99 MSRP
Price is at time of testing!


MX650 Fanless – Overshoot Transient Tests
VSB On VSB to Full, 12V Off to Full, 12V

Uh… yeah. Now I’m really impressed. All three of these shots look good enough to let the unit have full scoring marks here. Smooth and continuous indeed. I have seen them done better, but this will do.

Time to get the hot tests done. Like I said, there will be airflow through the unit but we should still get pretty close to the 40 degree target.

MX650 Fanless – Hot Load Tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
AC
Input
Eff. P.F. Intake/
Exhaust
Progressive load tests
1 1A 1A 4.6A 65.2W/
75.8W
117.7V 86.0% 0.957 26°C/
27°C
3.312V 5.02V 12.09V
2 1.5A 1.5A 9.5A 129.8W/
144.4W
118.3V 89.9% 0.986 28°C/
30°C
3.311V 5.02V 12.08V
3 3.5A 3.5A 24A 326.6W/
358.0W
117.4V 91.2% 0.991 33°C/
39°C
3.307V 5.02V 12.08V
4 5A 5A 36A 486.4W/
536.6W
116.4V 90.6% 0.994 37°C/
48°C
3.303V 5.01V 12.08V
5 7A 7A 48A 651.6W/
731.9W
116.3V 89.0% 0.996 40°C/
58 °C
3.296V 5.00V 12.06V
Crossload Tests
CL1 12A 12A 0A 100.8W/
120.8W
119.4V 83.4% 0.979 28°C/
34°C
3.292V 5.00V 12.08V
CL2 0A 0A 54.1A 653.2W/
728.5W
117.2V 89.7% 0.997 38°C/
53°C
3.299V 5.00V 12.06V

And there you go… forty degrees, no problem.

Something else that wasn’t a problem was doing the Platinum efficiency numbers again, though test three does still need the help it needed in the cold tests. I’d like to see that number come up, but this is fine for scoring purposes today.

And the voltage readings. Mistel still means business, though two of the rails did slip a little bit. Now we have 0.61% on the 3.3V, 0.40% on the 5V, and 0.33% on the 12V. That works out to an average of 0.47%, so we are still doing better than mythic for scoring later. Very impressive for a first outing like this. Somebody on the design side of things really knows what they’re doing.

But perhaps we should look at the rest of the scope shots before we heap too much praise on Mistel.

MX650 Fanless – Oscilloscope
Test # +3.3V +5V +12V
1
2
3
4
5
CL1
CL2

That’s it. I’m heaping praise on Mistel. The 12V side looks to peak at about 20mV, the 5V at 8mV, and the 3.3V at 8mV.

Enough numbers. I really, really want to look at the guts right now. Let’s do that.