Antec HCP-750 80 Plus Gold
by Martin Kaffei on October 26, 2011 4:35 AM EST- Posted in
- Cases/Cooling/PSUs
- PSUs
- Antec
- 80Plus Gold
- 750W
- High Current Pro
Voltage Regulation
| +3.3V Regulation/Ripple and Noise | |
| Load | Voltage |
| 5% | +1.70% (15 mV) |
| 10% | +1.58% (15 mV) |
| 20% | +1.39% (14 mV) |
| 50% | -0.61% (10 mV) |
| 80% | -1.61% (13 mV) |
| 100% | -2.06% (16 mV) |
| 110% | -2.30% (15 mV) |
| Crossload +12V max. | -0.18% |
| Crossload +3.3V/+5V max. | -2.72% |
| +5V Regulation/Ripple and Noise | |
| Load | Voltage |
| 5% | +2.00% (22 mV) |
| 10% | +2.00% (23 mV) |
| 20% | +1.80% (22 mV) |
| 50% | +0.00% (10 mV) |
| 80% | -0.80% (12 mV) |
| 100% | -1.10% (14 mV) |
| 110% | -1.20% (13 mV) |
| Crossload +12V max. | +0.86% |
| Crossload +3.3V/+5V max. | -2.96% |
| +12V Regulation (Worst Rail)/Ripple and Noise (Worst Rail) | |
| Load | Voltage |
| 5% | +1.28% (9 mV) |
| 10% | +1.24% (8 mV) |
| 20% | +1.16% (7 mV) |
| 50% | +0.42% (35 mV) |
| 80% | -0.42% (30 mV) |
| 100% | -0.45% (28 mV) |
| 110% | -0.51% (27 mV) |
| Crossload +12V max. | -0.67% |
| Crossload +3.3V/+5V max. | +0.63% |
Noise Levels
| Sound Pressure Level (Ambient: 16dBA. 1m distance) | |
| Load | dB(A) |
| 5% | 18 |
| 10% | 18 |
| 20% | 18 |
| 50% | 20 |
| 80% | 23 |
| 100% | 27 |
| 110% | 31 |
Efficiency and PFC
| 115VAC. 60Hz | ||
| Load | Efficiency | PFC |
| 5% | 69.95% | 0.842 |
| 10% | 79.10% | 0.911 |
| 20% | 87.08% | 0.986 |
| 50% | 90.78% | 0.989 |
| 80% | 89.36% | 0.991 |
| 100% | 87.99% | 0.993 |
| 110% | 87.23% | 0.992 |
| 230VAC. 50Hz | ||
| Load | Efficiency | PFC |
| 5% | 76.42% | 0.810 |
| 10% | 80.36% | 0.840 |
| 20% | 87.52% | 0.970 |
| 50% | 90.87% | 0.982 |
| 80% | 90.04% | 0.985 |
| 100% | 89.80% | 0.988 |
| 110% | 88.17% | 0.990 |
As you can see we have two new tests. 5% is exactly half of the load we use at 10%, and it shows how the PSU performs below the 80 Plus loads (20% and more). In addition you can find crossload tests in the charts above.
Crossload tests are static loads where we try to put the PSU under stress with high current on 3.3V/5V and low current on 12V, or high current on 12V and low current on 3.3V/5V. Since most PSUs have a common forward converter the PWM-IC can only regulate one voltage while the other ones are coupled to the same control loop via resistors. (Usually +3.3V has its own mag amp or shunt regulator; -12V uses a transistor.) This is the reason why 12V is often too high when 5V is loaded with a low current and too low when 5V is loaded with a high current. An example: the control circuit has no reason to raise 5V with 1A load while 12V is at 20A load. 12V is very low now, e.g. 11.40V, but since these voltages have the same regulation, 12V won't be raised since 5V is the reference value.
At 5-20% load the fan is no quieter than the one from the HCP-1200, which was already silent and close to our measurement limit. Therefore the fan rotates somewhat slower at high load. In addition, there is no background noise, which is something we see in the air channels of an 80mm design. The bad thing is we always hear the ball bearing of the ADDA fan; Sanyo Denki would be a better choice here. At its peak nearly 91% efficiency can be achieved. The power factor is a maximum of 0.990. Ripple and noise is very low during all loads. It might look unusual that ripple and noise are higher at low load, but this is a typical result for the CM6901X IC and the resonant circuit. Overall the performance is great.
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piroroadkill - Wednesday, October 26, 2011 - link
That said, just to say, this Antec is made by Delta, and some of their new high end designs such as Antec Signature in their new PSU size (120mm rear fan) are also made by Delta, and are some of the highest rated power supplies going.Really, there are so many OEMs in this game under the same brand, you have to learn what you're looking at.
The best site for this, bar none, is jonnyguru.com
Rick83 - Wednesday, October 26, 2011 - link
Sadly you can't even judge a PSU by its OEM.The same OEMs may build to vastly different standards - so even some chinese OEM that's been building firebombs for decades may get a contract to build a high-end PSU, and there's no real reason they wouldn't be able to do it, if they have the work force and know-how - both of which aren't that special in the PSU sector.
In the end, don't buy by names or OEMs or brands or whatever - but look at as many reviews as possible, to verify that in every test the protection circuitry performed and noise was low, as well as the efficiency being the one that's indicated by the 80+ label.
Even then there's a certain risk you end up with a monday's PSU, but odds are mostly in your favor..
buzznut - Thursday, October 27, 2011 - link
I completely agree with this post. It is just like asking, "Which brand video card do I buy?" The best one available in your price range, do your homework.Each PSU should be taken on its own merits. I always thought Kingwin power supplies look flashy but I would have bet they aren't that great. Then I find out some of the high end ones they've released in the last year are outstanding, from Superflower. I'm speaking in particular about the Gold Series.
piroroadkill - Thursday, October 27, 2011 - link
Platinum, too. Super Flower has a platinum platform.As always, I recommend jonnyguru.com
radium69 - Thursday, October 27, 2011 - link
I got the platinum one, its awesome by any standards!Stuka87 - Wednesday, October 26, 2011 - link
Antec does not build most of their supplies. They are build by OEM's. My Antec is made by Sea Sonic for instance (great supply).Corsair does not build any of their supplies at all. And they actually use the same manufacturer that Antec uses for some of their supplies.
Sorry you had a supply fail, it can happen with any brand. But saying you hate Antec yet love Corsair is kind of hypocritical. Kind of like saying you hate the Pontiac Vibe yet love the Toyota Matrix, when in fact they are the same car made in the same factory (well, back when they are being made anyway).
zero2dash - Wednesday, October 26, 2011 - link
before I buy another CX series Corsair.I bought 1 for a customer build, a CX500. It has coil whine.
Yes I know coil whine is harmless but that's beside the point. It shouldn't make any noise other than the fan inside of it when it ramps up at a higher load/temp.
Just because I've had a bad experience with a CX doesn't mean I'm not going to continue buying Corsair. I've got an HX850 and a TX650 right now happily chugging along. In the past I had an HX520 and a VX550. The VX550 eventually got killed after about 2 years of use (from Folding@home I suspect), but it was replaced under warranty. I'll still buy Corsairs in the future.
My work rig has an Antec Neo Eco 620. No problems.
Last customer build I put together I was trying to stay on the cheap and I went with the Rosewill Green series S2 620 after seeing the great review on Hardware Secrets. I've had no complaints of problems from my customer yet on that one (and I was leery of that one, being a Rosewill product....even though I knew internally it was an ATNG).
Those points aside - you roll the dice with any psu. I've seen people on various sites/forums with dead Corsair's, Antec's, Enermax's, Silverstone's, etc [enter psu manufacturer here].
geniekid - Wednesday, October 26, 2011 - link
As noted by other posters, Antec and Corsair aren't OEMs. Tom's has a great article listing all power supply sellers and the OEMs behind each line as well as how to figure out which power supply you actually have.http://www.tomshardware.com/reviews/power-supply-o...
I'll also take this opportunity to give Seasonic a thumbs up, based solely on personal experience.
Mr.T - Thursday, October 27, 2011 - link
Oh wow, that Tom's article is really cool; It's nice to who the manufacturer actually is up the production chain.So it seems my PC Power&Cooling PSU was manufactured by Seasonic. Quite happy with that. I'll echo the Seasonic love then, as it's been running strong for 4 years now and it's not going anywhere either (thankfully, 750W is still plenty enough).
Martin Kaffei - Thursday, October 27, 2011 - link
Well, this article uses old information. I already did something like that in 2008 on ComputerBase (in German).Moreover you should know that some brands have a number, even if they are no real manufacturer (In Win e.g.). Today the UL number is unhelpfully. It's better to take a look at my articles. Usually I write something about the real ODM. Just like in this review.