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1 Rail or 2 Rails?

Looking at 2 PSUs the Rosewill HIVE has 1 - 12V rail, but supplies 650W

The OCZ ModXStream Pro has 2- 12V rails, but supplies 500W

Which would perform better?
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  1. Best answer
    The OCZ ModXStream Pro Series 500W (OCZ500MXSP) has a maximum combined +12 Volt continuous current rating of 36 Amps and has one 6-pin and one (6+2)-pin PCI Express supplementary power connectors.

    The Rosewill HIVE Series 650W (HIVE-650) has a maximum combined +12 Volt continuous current rating of 46 Amps and has two (6+2)-pin PCI Express supplementary power connectors.

    Both models are made by Sirtec (i.e. the OEM).

    The Rosewill HIVE Series 650W (HIVE-650) is the only one of those two PSUs that is capable of powering a system with two reference design Radeon HD 7850 graphics cards in 2-way CrossFire mode.
  2. HIVE series uses a more modern and 'advanced' design than the ModXStream Pro series as well: independantly regulated; so voltage regulation is likely to be better on the HIVE.
  3. Best answer selected by zantaff.
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