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Black fully modular ATX power supply with 120 mm fan and 90-degree 12V-2x6 connector

Cooler Master

Cooler Master MPX-8503-AFAG-2BUV 850 W power supply

SKU CH-AEGT-SX7RG MPN MPX-8503-AFAG-2BUV

Fully modular 850 W ATX 3.0 PSU with 80 Plus Gold efficiency, Cybenetics Platinum rating, 120 mm HDB fan, zero-RPM mode, 90° 12V-2x6 PCIe 5.1 connector and Japanese capacitors

  • ColorBlack
  • TypeATX 12V Ver. 3.0
  • Maximum Power850 W
  • Fans1 x 120 mm HDB fan
  • PFCActive
  • Max PSU Length180 mm

Options 850W

  • 80 Plus Gold certified for 90% typical efficiency
  • ATX 3.1 support with 12V-2x6 connector delivering up to 600W to GPU
  • Fully modular cabling reduces clutter and improves airflow
  • Zero-RPM fan mode activates only when temperature demands cooling
  • 100% Japanese capacitors enhance efficiency and reduce ripple noise

Built for modern GPU power

This fully modular ATX 3.1 power supply delivers 850 W and includes a native 90-degree 12V-2x6 PCIe 5.1 connector rated for 600 W. It targets builders who need reliable, high-efficiency power for current-generation graphics cards without cable clutter. Japanese capacitors and an LLC resonant topology support stable output across the load range.

80 Plus Gold with Titanium-class light-load

The unit meets 80 Plus Gold certification and reaches Titanium-level efficiency at 10% and 20% loads on a 115 V input. Active PFC corrects the power factor across a 100-240 V, 50/60 Hz range. Hold-up time is at least 16 ms at full load, and the power-good signal arrives within 100-150 ms. Protection circuits cover OPP, OVP, OTP, OCP, SCP, UVP, plus surge and inrush events.

Check case length and ATX 3.1 readiness

The chassis measures 180 mm deep, so verify your case clearance before ordering. Your motherboard and GPU must support the ATX 3.1 standard and the 12V-2x6 connector to use the native cable; otherwise an adapter will be required. The 120 mm HDB fan runs in a zero-RPM mode until thermal thresholds are reached, so ensure your case airflow can handle the heat when the fan spins up.

Puntos fuertes

  • 80 Plus Gold certified for 90% typical efficiency
  • ATX 3.1 support with 12V-2x6 connector delivering up to 600W to GPU
  • Fully modular cabling reduces clutter and improves airflow
  • Zero-RPM fan mode activates only when temperature demands cooling
  • 100% Japanese capacitors enhance efficiency and reduce ripple noise

Especificaciones

BrandCooler Master
ModelMPX-8503-AFAG-2BUV
ColorBlack
TypeATX 12V Ver. 3.0
Maximum Power850 W
Fans1 x 120 mm HDB fan
PFCActive
Max PSU Length180 mm
ModularFull Modular
Power Good Signal100-150ms
Hold-up Time>= 16ms at 100% Load
Efficiency>= 90% @ Typical Load
Energy-Efficient80 PLUS GOLD Certified
ProtectionOPP/ OVP/ OTP/ OCP/ SCP/ UVP/ Surge & Inrush Protection
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Input Current10 - 5A
Output+3.3V@20A, +5V@20A, [email protected] , [email protected] , +5Vstb@3A
MTBF>100,000 Hours
ApprovalscTUVus, TUV, CE, FCC, BSMI, CCC, EAC, RCM, UKCA, RoHS2.0 / BIS, KC (based on region’s request.)
ConnectorsATX 24 Pin x1 (550mm)
EPS 4+4 Pin x1 (600mm)
EPS 8 Pin x1 (600mm)
SATA x6 = 2x (500+120+120+120mm)
Peripheral 4 Pin x2 = 2x (500+120+120+120mm)
PCI-e 6+2 Pin x3 = 3x (500+120mm)
12VHPWR x1 (650mm)
Dimensions7.09 x 5.91 x 3.39"
Weight6.46 lbs.
Package ContentMWE Gold 850 V3
Connectors
Power Cord
4x screws
Manuel
Peso de envío2.74 kg
Dimensiones del paquete306 × 203 × 127 mm

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Preguntas sobre este artículo

Will the 180 mm length fit in a compact case?

At 180 mm long it fits most mid-tower and many compact cases; measure your chassis clearance before ordering.

Does the 90° 12V-2x6 cable clear tall GPU back-plates?

The right-angle 12V-2x6 connector routes close to the card, reducing bend radius and avoiding interference with large coolers.

What does the Zero-RPM mode do at idle?

The 120 mm HDB fan stays off until internal temperature rises, giving silent operation during light workloads.

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