SUPPLIED BY: JonnyGURU.com
PRODUCT: EVGA 750N1 750W
PROD LINK: 750N1 Product Page
PRICE: $69.99 @ NewEgg
Price is at time of testing!
As always, we’ll do our sciencing with a lot of science enabling devices. It’s the same stuff I’ve used for years now, though the FastAuto FA-4200ATE hasn’t actually been here all that long now. But it will be doing the load testing again, assisted by my Rek RF9901 power meter, Tek TDS-2012B scope, Extech DMM, and dual probe thermometer. Oh, and this here container of fizzy sugar water.
| EVGA 750N1 – STANDBY Load Tests | ||||
|---|---|---|---|---|
| Test # | +5VSB | DC Watts/ AC Watts |
P.F. | Eff. |
| 1 | 0.5 | 2.58W/ 3.08W |
0.331 | 83.8% |
| 5.16V | ||||
| 2 | 1.5A | 7.70W/ 9.64W |
0.437 | 79.8% |
| 5.13V | ||||
| 3 | 3.0A | 15.27W/ 20.1W |
0.491 | 76.0% |
| 5.09V | ||||
Starting things off, of course, will be the standby tests. Here, we find that the unit is above average for efficiency.
Voltage regulation is an excellent 1.4%. You know, this unit may actually not be that bad if this is any indication. Let’s see where the cold tests go.
| EVGA 750N1 – 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 | 5.5A | 76.4W/ 95.1W |
117.6V | 80.3% | 0.974 | 25°C/ 27°C |
| 3.365V | 5.04V | 12.13V | ||||||
| 2 | 2A | 2A | 11A | 152.4W/ 180.8W |
117.1V | 84.3% | 0.983 | 25°C/ 30°C |
| 3.350V | 5.02V | 12.10V | ||||||
| 3 | 5A | 5A | 27.5A | 378.7W/ 445.4W |
116.5V | 85.0% | 0.991 | 26°C/ 36°C |
| 3.302V | 4.98V | 11.99V | ||||||
| 4 | 7.5A | 7.5A | 41A | 559.4W/ 674.5W |
115.7V | 82.9% | 0.994 | 28°C/ 40°C |
| 3.259V | 4.94V | 11.90V | ||||||
| 5 | 10A | 10A | 55A | 742.4W/ 932.7W |
116.4V | 79.6% | 0.996 | 28°C/ 44°C |
| 3.212V | 4.92V | 11.90V | ||||||
| Crossload Load Tests | ||||||||
| CL1 | 18A | 18A | 0A | 139.4W/ 189.8W |
117.8V | 73.4% | 0.983 | 28°C/ 34°C |
| 3.282V | 4.39V | 12.67V | ||||||
| CL2 | 0A | 0A | 59A | 676.2W/ 839.2W |
116.3V | 80.6% | 0.995 | 28°C/ 42°C |
| 3.272V | 5.30V | 11.44V | ||||||
Hmm… okay. Some decent stuff, some not so decent stuff.
Efficiency looks to be a pass for 80 Plus White, which is a real good thing. See, though I rarely have occasion to enforce this rule, I require 80 Plus White at a minimum for all non certified units. White is stupid easy to hit for modern designs… there’s no reason whatsoever any unit should miss it. This puppy passed, so we’ll continue on to voltage regulation.
And that’s where this unit falls on its face. It’s group regulated, and not good at this part of things at all. Keeping in mind that the two crossload tests now count for scoring, I see mediocrity all the way across: 4.64% on the 3.3V rail, 18.20% on the 5V rail, and 10.25% on the 12V rail. The unit isn’t quite as bad at holding voltages as the the Cooler Master unit we saw in October, but is still showing out of spec readings on the 5V rail in both tests. The major difference from the CM unit is that the 12V rail only goes out of spec on the first crossload test, and the 5V rail is only just over spec on the second crossload test, so this is a slightly more functional unit than that one was.
But make no mistake… it’s still group regulated, it’s still obsolete technology, and it still isn’t well suited to modern builds. Next page, please.
