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Enermax Platimax 850w Power Supply Review (EPM850EWT)

Rating: 9.0.

When shopping for a quality power supply Enermax are always one of the companies to place at the top of a shortlist. Last October we looked at their Platimax 1200W power supply and today we are reviewing the 850W version. Like the bigger brother, this product is 80 Plus Platinum Certified.

The Platimax has been released as a replacement for the MaxRevo range of products and is a Dynamic Hybrid Transformer Topology, which according to Enermax is a “Technological breakthrough topology using a staged dynamic transformer array for extremely high efficiency with the most durable and stable output at any load.”

Efficiency for these units is rated between 90 and 94 percent, meeting 80 Plus Platinum ratings. Unlike the 1200W model which we previously reviewed, this model isn’t a fully modular design. It is compliant with SSI PSDG for the latest Intel and AMD processors and is downward compatible with EPS12V v2.92, v2.8. All of the units in this range feature a 13.9cm Enermax fan with Twister Bearing Technology.

Specifications and product overview:

  • 80 PLUS® Platinum
    90 to 94 percent efficiency at 230V and 20 to 100 percent load. 80 PLUS® Platinum certified.
  • Dynamic Hybrid Transformer Topology
    Technological breakthrough topology using a staged dynamic transformer array for extremely high efficiency with the most durable and stable output at any load.
  • ErP Lot 6 ready!
    Help systems to meet EU eco-design directive ErP/EuP Lot 6 (<1W in standby mode) due to improved, high-efficient 5V standby (+5Vsb) circuitry.
  • C6 & Hybrid Support
    Supports energy saving modes of current and future CPU & GPU generations (C6 & Hybrid Mode) due to ZERO LOAD Design (no minimum load).
  • Multi Rail Design
    Stable and safe power supply thanks to up to six high-performance and massive 12V rails each with separated over current protection (OCP). Extremely low ripple noise.
  • Future ready and flexible
    All-round modular cable management. 10/12P sockets for possible connector changes of upcoming high-performance CPU and graphics card generations.
  • Intel ATX12V v2.3
    Compliant with latest desktop power supply design guide. Full support of most current CPU: Intel® Core 2 Duo / Quad / Extreme / Core i7 / i5 / i3, “Sandy Bridge“ and AMD Athlon II X2 / X3 / X4 Phenom II X2 / X3 / X4 / X6, “Bulldozer“ or “Llano“.
  • Fit4Server
    Compliant with SSI PSDG for the new Intel Core Extreme/i7, Xeon and AMD® Opteron and downward compatible with EPS12V v2.92, v2.8.
  • DXXI ready!
    Full support of most current DX11 graphics cards due to minimum two 6+2P (8P) PCI-E connectors.
  • Full graphics power
    Supports SLI and CrossFireX systems.
  • Air Cooling by Enermax
    Integrated 13.9cm fan with patented Twister Bearing Technology ensures efficient and ultra silent cooling and long lifetime (100,000 hours MTBF).
  • SpeedGuard
    Path-breaking and leading fan speed control to ensure effective and silent cooling. Unmatched 300 to max. 1,000 RPM.
  • HeatGuard
    Keeping PSU fan running for 30-60 seconds after shut down to dissipate the remaining system heat and prolonging system lifetime.
  • SafeGuard
    Industry-leading multiple protection circuitry of OCP, OVP, DC UVP, OPP, OTP, SCP & SIP.
  • CordGuard
    Fixing the AC cord tightly to avoid accidental shutdowns of your PC.
  • Non-stop @ 50°C
    Non-Stop industrial class performance at 50°C ambient.
  • High-quality Japanese Capacitors
    Highest Enermax quality standards for leading stability and maximum durability. 105°C Japanese electrolytic capacitors without exception.
  • ENERGY STAR 5.0 ready!
    Support computer system to meet ENERGY STAR 5.0 standard.
  • Warranty
    5 years vendor warranty

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