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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Max- - Thursday, March 1, 2012 - link
Why isn't there any mention of what the input voltage is?I assume you're testing in 120V but i'm quite sure a large percentage of your readers are coming from somewhere with a voltage more around 230V.
Please, how does this affect the efficiency? Surely there's some way you can get a power supply that can provide these tests with both 120V and 230V tests?
Omoronovo - Thursday, March 1, 2012 - link
~220v inputs generally make for more efficient PSUs, though ripple will often increase by around 16% to account for the variance of 50 vs 60hz commonly used in 220v-based countries like the UK.silverblue - Thursday, March 1, 2012 - link
230v. :)ahar - Thursday, March 1, 2012 - link
-6% to +10%connor4312 - Thursday, March 1, 2012 - link
You can see in the picture on the second page that a European plug is included, so I assume it supports 230/220V.entity279 - Thursday, March 1, 2012 - link
"for the difference ($17 USD) customers get a better fan and a few extras such as cable ties and a bag for the unused cables"The fan difference my be important important. Also, and it's not mentioned in the review, Seasonic offers 7(!!) years waranty versus XFX's 5.
Martin Kaffei - Thursday, March 1, 2012 - link
You're right.Warranty has been added..
mattgmann - Thursday, March 1, 2012 - link
The last high end PSU I've bought was an Antec Signature 850W a few years back. I believe it cost nearly $300, and there was NOTHING on the market that approached its quality at the time.It's nice to see there are a lot of new units coming out that are giving great power quality with even higher efficiency at much lower prices.
Hopefully the quality/pricing continues to trickle down to <500W power supplies.
ShieTar - Thursday, March 1, 2012 - link
"option to have the CPU run passively has <40% load is a nice feature if you don't need the airflow a PSU can provide"Having a CPU run passively (without external power) would be nice indeed ;-)
dqniel - Thursday, March 1, 2012 - link
This makes it sound like 80% is the minimum efficiency for the Platinum certification.This PSU only makes Platinum certification with 0.56% room to spare at 20% load, so I'd hardly say it "easily" makes it. Not that it matters, because the efficiency is still astounding.
80 Plus Platinum requirements at 115v:
20% load - 90% efficiency
50% load - 92% efficiency
100% load - 89% efficiency