XFX XTR 850W Power Supply Review

XFX is targeting serious gamers and hardware enthusiasts with its new XTR Series of PSU. XFX suggest other power supplies do not always deliver, "The Wattage you see isn’t always the wattage you get." We will certainly find out if that is true with the XTR 850W PSU delivers the power and efficiency it promises in its marketing.

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Overview

The first thing we are going to look at with the XFX XTR 850W is its packaging, accessories, and documentation. While normally none of these items is a make or break item for a power supply the packaging quite often contains a lot of information about the product we are purchasing. The inclusion of an owner’s manual that provides actual information about our product is also of great help. Accessories are almost unnecessary with a power supply as the unit is self contained, unless it is modular, but there are cases where a manufacturer can include useful accessories to make installation, routing, and use more efficient.

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The packaging of the XFX XTR 850W is as we have seen before from members of the XTR line of products. So, keeping with the pattern that we have seen with the XTR 550W and XTR 750W, we see a string of certifications running across the top of the front of the packaging including a SLI certification, CrossFire certification, and an 80 Plus Gold certification. As before, a quick check of the 80 Plus website does indeed find the unit listed as being 80 Plus Gold certified and we will be looking at this aspect of the unit later in this review. When we move to the rear of the packaging, we find a lot of advertising about capacitor quality, efficiency, power quality, and XFX's "True Wattage" guarantee. Around the sides of the packaging, we find the power table (reproduced below), connector count (reproduced below), a fan noise graph, the same mentions about "EasyRail" that we have mentioned previously, and a few other marketing points. (EasyRail is referring to this PSU being a single rail unit.) Lastly, we find that the unit is listed as having a 5 year warranty which is very good.

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The power information for the XFX XTR 850W is much as we expect from a power supply in the XTR series based on our previous reviews. The XTR 850W has a 12v capacity of 70A, or ~99% of the unit’s total possible capacity. When we look at the minor rails, we see that these are capped at 125W (which is 25W more than what we saw on the 750W model) and each rail is individually capable of 25A (a 5A increase compared to 750W model). Moving on to the connectors paired with these output capacities, we find that the XFX XTR 850W has eight modified 8-pin PCIe connectors, six Molex connectors, and ten SATA connectors. This arrangement is shared with the 750W and 550W models save for the increase in PCIe connectors that we see today. Given that there are not any more SATA or Molex connectors the increase in the capacity on the minor rails is a bit odd. Certainly though, for an 850W unit, the PCIe connector numbers are going to be fine for the vast vast majority of users. So, overall, the XTR 850W connector arrangement is just fine.

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Once we open the XTR 850W, we find the power supply, modular cables, mounting screws, the power cord, and a user manual. When we flip through the user manual we find that it is 15 pages long and covers all members of the XTR line from 550W to 1050W. Included in the manual is power information, a bunch of advertising, some warranty information, some troubleshooting information, some installation instructions, and the pinouts. All in all, not bad documentation and something we are glad to see included this time. Let's move on now and look at the unit itself.