XFX 1000W Pro Series 80 Plus Platinum
by Martin Kaffei on March 1, 2012 1:38 AM EST- Posted in
- Cases/Cooling/PSUs
- Seasonic
- PSUs
- XFX
- 80 Plus Platinum
Voltage Regulation
| +3.3V Regulation/Ripple and Noise | |
| Load | Voltage |
| 5% | +1.88% (4mV) |
| 10% | +1.78% (6mV) |
| 20% | +0.61% (7mV) |
| 50% | +0.30% (11mV) |
| 80% | -0.03% (13mV) |
| 100% | -0.67% (14mV) |
| 110% | -0.91% (15mV) |
| Crossload +12V max. | +0.70% |
| Crossload +3.3V/+5V max. | -0.30% |
| +5V Regulation/Ripple and Noise | |
| Load | Voltage |
| 5% | +0.05% (7mV) |
| 10% | +0.04% (8mV) |
| 20% | +0.04% (10mV) |
| 50% | -0.60% (14mV) |
| 80% | -1.54% (16mV) |
| 100% | -1.70% (13mV) |
| 110% | -1.84% (17mV) |
| Crossload +12V max. | +0.28% |
| Crossload +3.3V/+5V max. | -0.28% |
| +12V Regulation (Worst Ouput)/Ripple and Noise (Worst Output) | |
| Load | Voltage |
| 5% | +1.12% (5mV) |
| 10% | +1.08% (6mV) |
| 20% | +0.98% (18mV) |
| 50% | +0.48% (16mV) |
| 80% | +-0.00% (21mV) |
| 100% | -0.23% (23mV) |
| 110% | -0.29% (25mV) |
| Crossload +12V max. | -0.17% |
| Crossload +3.3V/+5V max. | +0.22% |
Noise Levels
| Loudness (subjective) | |
| Load | Opinion |
| 5% | low fan noise |
| 10% | low fan noise |
| 20% | low fan noise |
| 50% | fan noise |
| 80% | strong fan noise |
| 100% | strong fan noise |
| 110% | strong fan noise |
Efficiency and PFC
| Efficiency (AC input minus DC output) and Power Factor | ||
| Load | Efficiency | PFC |
| 5% | 80.01% | 0.816 |
| 10% | 84.20% | 0.877 |
| 20% | 90.56% | 0.939 |
| 50% | 92.74% | 0.980 |
| 80% | 91.80% | 0.986 |
| 100% | 91.01% | 0.987 |
| 110% | 90.98% | 0.989 |
The +12V voltage regulation is tight, while the weaker +5V ouput drops to 1.84% below the optimal level. Nevertheless, all of the voltages are well within the ATX specification. Moreover there is hardly any ripple or noise on the outputs. They're always under 25mV and there are no remarkable spikes or transients. There's definitely some nice work here and the results are very close to what we measured on the Seasonic PSU.
With 80 Plus Platinum certification, we expected high efficiency and the XFX model delivers. Efficiency is always above 80% and 80 Plus Platinum is no problem for this design. Maximum efficiency comes at 50% load as always. Worst-case efficiency at low load (5%) is still 80%, so we really can't complain. With 92.74% XFX is only slightly lower than the 860W PSU from Seasonic--easily within the variance we're likely to see from either PSU.
The power factor is also satisfying, staying above 0.816. That might not be the best result for low load, but any high-end system requiring the XFX Pro Series should be running loads higher than that. During all loads the fan noise is acceptable if not optimal. We didn't hear any noise from the chokes. Of course the fan's RPM and the load rise equally, which is one reason why we can't criticise a strong fan noise at 80% load. Furthermore the features include two different modes for controlling the fan speed—the fan can be turned off through up to 40%, making the PSU inaudible (just like the Seasonic 860W).
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29 Comments
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dqniel - Thursday, March 1, 2012 - link
And yes, you should edit the efficiency testing charts to say the voltage at which it was tested (115v, 230v).ZekkPacus - Thursday, March 1, 2012 - link
They used to test with both, which I would personally like to see come back. They also used to use a proper dbA measurement for noise and not the 'subjective' measurement they now use. A bit of a shame.sonci - Thursday, March 1, 2012 - link
so, whats next, a Seasonic PSU with the Corsair name on it?I wonder how fanboys will swear how good is their psu,
they even have the same market USA, Europe, don`t know if they sell in Asia though...
Sabresiberian - Thursday, March 1, 2012 - link
What's your point?There have always been far more PSU brands than manufacturers. Seasonic, at one time, didn't put their name on anything, they made PSUs for other companies to retail, and it was only through being mentioned in articles by sites like Anandtech and Tomshardware that end users came to know the name.
Any company that chooses Seasonic as a manufacturer deserves credit for making a great choice, since overall there is none better or more consistent (I rank Enermax up there as well, though being very picky about the electronic results puts Seasonic slightly ahead, overall). And, there is nothing wrong with having someone manufacture something you tweak the specs of to make your own design variation, or even just add a little "bling" as is pretty much the case here.
Just as an example, one reason I won't buy another Silverstone PSU is that you need a chart to figure out who made their particular product, and they more often choose by the manufacturing cost than by the quality of the work. Antec, on the other hand, chooses manufacturer quality over cost, generally speaking. You are more likely to find an Antec made by Seasonic than a Silverstone made by Seasonic. In fact, as far as I've read Silverstone has never used Seasonic. (Regardless of who's name is on it or who made it though, I firmly believe in buying a unit that you've read a proper review of.)
;)
aranyagag - Thursday, March 1, 2012 - link
yes please do mention the voltage, at which you test.IKeelU - Thursday, March 1, 2012 - link
But I don't understand why anyone would care even the slightest about how their PSU looks. I read the review and watched the video (which was almost entirely focused on the exterior design), but...I still don't get it.ZekkPacus - Thursday, March 1, 2012 - link
Some people like to have a showy case with windows. If that's the case, an 'agressive' looking power supply such as this might appeal to them. Same reasoning behind Corsair's GS series.Beenthere - Thursday, March 1, 2012 - link
Some folks get all excited about the exterior look of the PSU. It's strange for sure. Some reviewers actually rate the BOX that the PSU comes in. Does it have pictures of a sexy girl and a carrying HANDLE? If not they deduct points from the score... Some people are really gullible. ;)dj christian - Thursday, March 1, 2012 - link
It's not relevant to the article but how can i keep track on my posts and the comment replies in the articles and such with my account? Must i get a forum account?Thanks!
iamkyle - Thursday, March 1, 2012 - link
It would be nice to see these reviews compared to other PSU's JUST LIKE EVERY OTHER REVIEW ON ANANDTECH