EVGA 750 B3 750W Power Supply

REVIEW INFORMATION
SUPPLIED BY: EVGA
PRODUCT: 750 B3 750W
PROD LINK: 750 B3 Product Page
PRICE: $89.99 @ NewEgg
Price is at time of testing!


750 B3 750W – Overshoot Transient Tests
VSB On VSB to 100%, 12V Off to 100%, 12V

Is this unit looking smooth and continuous to me? Yes it is. Super Flower is one of the rare companies who keep on top of things here, and these shots show why that matters. We like smooth and uniform ramps up to full operating voltage on the outputs, and that’s what we got here today.

I have a feeling this unit’s going to score well, but we do need to make sure yet by heating things up. Let’s crank up the hot box now.

Crossload Tests

750 B3 750W – 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 5.2A 76.2W/
95.8W
115.6V 79.5% 0.952 33°C/
36°C*
3.310V 5.02V 12.09V
2 1.5A 1.5A 12A 164.8W/
193.6W
115.5V 85.1% 0.983 36°C/
43°C*
3.306V 5.02V 12.07V
3 3A 3A 29A 384.7W/
438.3W
114.9V 87.8% 0.994 38°C/
45°C
3.299V 5.01V 12.06V
4 4.5A 4.5A 44A 580.4W/
669.2W
113.3V 86.7% 0.996 42°C/
53°C
3.291V 5.00V 12.06V
5 6A 6A 57A 753.8W/
889.1W
112.4V 84.8% 0.996 46°C/
60°C
3.283V 4.99V 12.05V
CL1 14A 14A 0A 121.0W/
156.7W
114.2V 77.2% 0.977 35°C/
43°C*
3.293V 5.00V 12.08V
CL2 0A 0A 62.4A 756.9W/
889.1W
111.9V 85.1% 0.996 45°C/
58°C
3.292V 5.00V 12.05V

* Fanless operation.

Sadly, this time out the regulation wasn’t quite as good. That does tend to happen at times when the heat starts blasting. But even so, the numbers didn’t move much. The 5V rail stayed at that same 0.60% number, while the 3.3V rail went to 0.82% and the 12V ended up at 0.33%. That still works out to a comfortably excellent and still near mythic average of 0.58%. Pretty darned impressive for a unit in this market segment.

And you can tell heat wasn’t a major factor, either, because the efficiency numbers have stayed pretty well the same. This unit still clears 80 Plus Silver.

The fan worked roughly the same amount of time, as well.

750 B3 750W – Oscilloscope
Test # +3.3V +5V +12V
1
2
3
4
5
CL1
CL2

Oh, now this is getting ridiculous… ripple control this good, helped along by those extra in cable capacitors, is definitely not expected at this market segment. I’ve got 6mV on the 3.3V rail, 8mV on the 5V rail, and 7mV on the 12V rail.

Huh… maybe I should start throwing in a mythic level bracket on these. If I can figure out how to rebalance the rest of the scale, that is. Currently, excellent is 25mV or less, very good is 50mV, average is 75mV, below average is 100mV, and mediocre is the 120mV ATX spec. If I did a mythic level, it would probably be 10mV or less, average. Anything much less approaches the limits of what can be measured without confusing it for normal background line interference.

Enough about that. Let’s take it apart.