Antec HCG 750W: Built for Gamers?
by Martin Kaffei on April 12, 2011 8:20 PM ESTVoltage Regulation and Quality
| +3.3V regulation | |
| Load | Voltage |
| 10% | +2.42% |
| 20% | +2.12% |
| 50% | +1.21% |
| 80% | +-0% |
| 100% | -0.30% |
| 110% | -0.80% |
| +5V regulation | |
| Load | Voltage |
| 10% | +2.60% |
| 20% | +2.40% |
| 50% | +1.40% |
| 80% | +0.60% |
| 100% | +-0% |
| 110% | -0.40% |
| +12V regulation (worst rail) | |
| Load | Voltage |
| 10% | +1.50% |
| 20% | +1.33% |
| 50% | +0.80% |
| 80% | +0.16% |
| 100% | -0.17% |
| 110% | -0.54% |
All rails are very close to the optimal value. They start with a small over voltage and end with results just under by 0.5% to 1.0%. Since this PSU has multiple 12V outputs we have selected the worst rail for the tables, as we always do. +12V is not too weak but we should keep in mind that our loads are 14A per rail, according to the ATX standard. This is far away from the rated maximum but more than enough to reach 750 watts output.
Ripple and Noise
| +3.3V ripple quality | |
| Load | Ripple and noise |
| 10% | 15mV |
| 20% | 15mV |
| 50% | 22mV |
| 80% | 27mV |
| 100% | 31mV |
| +5V ripple quality | |
| Load | Ripple and noise |
| 10% | 18mV |
| 20% | 19mV |
| 50% | 28mV |
| 80% | 33mV |
| 100% | 36mV |
| +12V ripple quality (worst rail) | |
| Load | Ripple and noise |
| 10% | 23mV |
| 20% | 29mV |
| 50% | 30mV |
| 80% | 34mV |
| 100% | 50mV |
The good results continue here. Both smaller rails have less than 40mV ripple and noise (50mV is the ATX spec limit). The +3.3V rail shows small transients and +5V has some negligible overshoots. +12V has higher absolute ripple, but as a percentage it's better than the other rails at only 50mV. While this power supply is no match for the HCP series, the price makes the difference and there's nothing to worry about.
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sean.crees - Tuesday, April 12, 2011 - link
I'm sorry, but if it's not 80+ Gold certified now a days, then it's not even an option. Maybe 5 years ago this would have been good, but now it's just meh. If your going to drop money on a quality PSU, you might as well get the gold standard.LeTiger - Tuesday, April 12, 2011 - link
Agreed. If it's not Gold Cert, it's not going in my case.vol7ron - Wednesday, April 13, 2011 - link
I guess we have different standards. I'm only buying 80+ Platinumiamezza - Wednesday, April 13, 2011 - link
I'm only buy 100+ Unobtanium PSU'sThey are specified at over 100% efficiency - they actually put power back in to the grid.
Yuniverse - Wednesday, April 13, 2011 - link
lol... love it ! :)Souka - Wednesday, April 13, 2011 - link
If it's not at least %101 effecient then i'm not buying it...bigboxes - Wednesday, April 13, 2011 - link
If the power company is not paying ME I'm not going to buy it.JMC2000 - Wednesday, April 13, 2011 - link
Hopefully, there is a 1200W 100+ Unobtanium PSU, with around 120%-150% efficiency. That way, I can get max power, while only using ~7A @ 115V, and get paid by the electric co everytime I boot my Über 1337 PC :)PrinceGaz - Wednesday, April 13, 2011 - link
110% efficiency PSU would not put any power back anywhere, rather the output power would be 110% of the input power from the mains. So if you drew 550W from a 110% "Unobtainium" PSU, it would still take 500W from the grid.As counter-intuitive as it seems, a PSU would actually need to have a negative efficiency figure in order to return power to the grid when drawing power from it (a -80% efficiency would mean that if you drew 500W from it, it would return 625W to the grid).
DarkKnight_Y2K - Wednesday, April 13, 2011 - link
LOL. That was a good one!