Reviews - Antec Truepower New 750W
Sample Provided by: Antec (By OklahomaWolf on Sun, Mar-15-2009)

Page 2 -

Once more unto the load testing phase we goeth. Like always, the SunMoon SM-268 ATE will be the Burton Guster to my Shawn Spencer. It's able to electronically load units as big as 1100W or so, so it should be ok with this here new Truepower New 750W. Assisting it will be Lassie, my pet name for the Brand 4-1850 power meter that can never take a joke; and Jules, the dual LM35DZ thermometer with a heart of gold. No, I'm not going to do the Snoopy dance if this goes well. Well... probably not. Almost certainly not. While this is all going on, Henry, the cranky USB Instruments DS1M12 USB oscilloscope, will be watching the outputs to see if ripple and noise are staying in spec.

As always, this is done in three stages. First we'll do some load testing at room temperature using a program of balanced progressive tests ranging from 20%-100% of full power followed by two crossload tests. Then, we'll have Henry there watch the 5VSB and 12V rails for turn on spikes that go out of spec. Finally, we'll repeat the progressive and crossload tests with the unit locked in a hot box. If that doesn't make the sparks fly, nothing will.

Since this is a quad 12V unit, and Gus can only take two 12V rails at a time, I'll be using my nifty breakout board to sum all the rails to one. Loads for the progressive and crossload tests are chosen with respect to the maximum limits given on the label. Sigh... just once, I'd like to really let fly at these units. Should I? Come on, it'll be fun. Yes, Gus, I know those limits are chosen for a reason; but life is short, the sun is out, and there's a little red guy on my shoulder telling me I should. Just crossload test two, then. Ok, fine, I'll stick to the maximum combined 12V limit... that will still run the unit 25W over spec, and we'll still get to see if the maximum combined 12V rating can be reached in normal use. Deal? Deal.

Results from Antec True New 750W COLD load tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
Eff. Intake/
Exhaust
Simulated system load tests
Test
1
2.5A 2.5A 10.5A 172W/
204W
84.3% 20°C/
26°C
3.37V 5.13V 12.08V
Test
2
5A 5A 21A 318W/
370W
85.9% 22°C/
30°C
3.34V 5.09V 12.03V
Test
3
7A 7A 31A 454W/
524W
86.6% 23°C/
32°C
3.31V 5.06V 11.99V
Test
4
9.5A 9.5A 41.5A 597W/
705W
84.7% 23°C/
32°C
3.26V 5.00V 11.94V
Test
5
12A 12A 52A 739W/
889W
83.1% 23°C/
32°C
3.21V 4.94V 11.88V
Test
CL1
21A 20A 1A 200W/
261W
76.6% 24°C/
32°C
3.19V 4.89V 12.06V
Test
CL2
1A 1A 62A 768W/
912W
84.2% 23°C/
32°C
3.32V 5.08V 11.87V

Are you watching? I'm doing my Snoopy dance now, for the True New is so far making a fantastic first impression. Not only are we seeing the 80 Plus Bronze numbers being met up there, we're also seeing Jules report some nice temperature readings. In fact, everything over test two is nailed to 32 degrees at the exhaust. That said, the PWM fan isn't quite all it's been made out to be, because I heard it whining by test five. It was a quiet whine, but a whine nonetheless.

Moving over to the voltage readings, I was somewhat disappointed, for the unit didn't quite stay as stable as I'd have liked to see it. It's well in spec, but rather unremarkable. Especially on the 3.3V, where a loose-ish ATX connector contributed to a fair sized voltage drop. But then if you take a look at test CL2, the unit is putting out 18W more than it was rated for, while still pulling in a remarkable 84.2% efficiency. So far, I'd have to say things are looking very good, but not quite spectacular for the True New.

Overshoot Transient Testing - Antec True New 750W
VSB On
VSB to Full, 12V
Off to Full, 12V

Now we get some good news, for the True New is excelling here. Remember last week's Enermax review when we saw one of theirs knocking the ball out of the park on the 5VSB rail?; Well, look out Enermax - Antec has your number and they're calling collect. The 5VSB spike on this unit is ever so slightly lower than the Revolution managed, and make no mistake - that's something to brag about. And then we move on to the 12V overshoot shots, and see that the Antec is now whupping the Revolution 85+ with its own power cord. 8 volts - that's the extent of the 12V spike.

You know what? The previous Truepower line was Seasonic based, and these results are very reminiscent of the Seasonic M12D I looked at. D'ya think? Naaaaaw, couldn't be. Antec couldn't possibly be using a Seasonic platform that retails for a small fortune in these units, could they? We'll find out for sure in page three. Meantime, let the hot boxing commence. Lassie, Jules, Gus, let's grill us a Truepower.

Results from Antec True New 750W HOT load tests
Test # +3.3V +5V +12V DC Watts/
AC Watts
Eff. Intake/
Exhaust
Simulated system load tests
Test
1
2.5A 2.5A 10.5A 172W/
204W
84.3% 28°C/
28°C
3.35V 5.13V 12.07V
Test
2
5A 5A 21A 318W/
372W
85.5% 32°C/
35°C
3.30V 5.08V 12.00V
Test
3
7A 7A 31A 452W/
527W
85.8% 37°C/
41°C
3.26V 5.04V 11.95V
Test
4
9.5A 9.5A 41.5A 597W/
706W
84.6% 41°C/
52°C
3.32V 5.05V 11.90V
Test
5
12A 12A 52A 738W/
894W
82.6% 49°C/
59°C
3.27V 4.99V 11.83V
Test
CL1
21A 20A 1A 204W/
264W
77.3% 37°C/
41°C
3.27V 4.96V 12.03V
Test
CL2
1A 1A 62A 765W/
916W
83.5% 45°C/
58°C
3.35V 5.10V 11.82V

Ha haha haaaaa ha. I know this... much is... true: the True New is having no problem at all dealing with the heat. It's still bringing in 80 Plus Bronze, which is a notable accomplishment already considering that the hot box hit 49 degrees. And look at that - 765 watts at 45 degrees. And it's still doing 83.5% efficiency! This is just outstanding. And look at that - the simple act of reseating the ATX connector lit a fire under the 3.3V rail which is now more stable than the other two rails. Amazing.

Fannage whinage? Yessage. By test five again. This is not the quietest Antec I've had my mitts on.

You know what else is true? I'm not a fan of Spandau Ballet songs that are now stuck in my head. Maybe Henry, the grumpy USB oscilloscope, can help me there.

Oscilloscope Results - Antec True New 750W
Test #
+3.3V
+5V
+12V
Test
1
Test
2
Test
3
Test
4
Test
5
Test
CL1
Test
CL2

Looking at these shots, I have another annoying 80's classic from Frida stuck in my head, for over there on the 5V rail there's something going on-on-on. While this rail is well in spec at all load levels, it looks like that rail got infected with the boogie woogie bug. Starting in test one and ending by test five, it threw odd random spikes into the waveform. Sometimes the spikes were obvious, sometimes not. Sometimes they weren't there at all. I've adjusted the timebase on the scope to show you better.

That being said, the True New is once again an outstanding performer. Every last rail is doing better than 25mV of ripple. If this isn't the M12D platform, it's pretty darned close to being just as awesome. I'm doing my Snoopy dance again. Just you try and stop me.



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