The XFX XXX Edition 650W power supply is certainly worthy of consideration for use in any high gaming system and will easily handle any single high-end graphics card gaming rig with plenty of room to overclock. There are a total of four PCI-E connectors available on this power supply so crossfire or SLI is definitely an option but keep an eye on power requirements especially with the more power hungry Nvidia offerings. The XFX XXX Edition 650W power supply performed very well and was only let down by its failure to meet the requirements of its claimed 80 Plus Bronze certification following the OCC power supply testing methodology. The efficiency levels are still pretty good and I have no hesitation in awarding the XFX XXX Edition 650W power supply a OCC Silver award.

Pros:

• Great DC voltage load regulation
• Good DC quality
• Four PCI-E connectors
• Five year warranty
• Modular

XFX 650 W XXX Edition is a very good power supply, being capable of delivering its labeled wattage at high temperatures, keeping high efficiency if you pull up to 80% of its labeled capacity (i.e. up to 520 W), a three percent voltage regulation (as opposed of 5% as defined on the ATX specification – translation: voltages closer to their nominal values than required), low noise and ripple levels, modular cabling system and a single-rail design.

Another nice feature is the presence of four connectors for video cards, allowing you to install two video cards that require two power connectors each. And the five-year warranty certainly counts positive points towards this unit.