Sharkoon Rebel P20 1200W ATX v3.1 PSU Review

The Sharkoon Rebel P20 1200 is an affordable high-power PSU, compliant with the most recent ATX spec (v3.1), so it can deliver double its power for short periods, if required. 

The Sharkoon Rebel P20 1200 will be included in my best ATX v3.x & PCIe 5.x PSU picks article.

Sharkoon made a bold move in power supplies, releasing two lines simultaneously, one with normal-size ATX members and one with small form factor SFX models. I will review all of them in time, starting from the flagship Rebel P20 model with 1200W capacity. Andyson is the OEM of all Rebel P20 units, which suffered last year because of EVGA’s issues to the degree that it almost shut down its operation. It is nice to see Andyson back again to its feet, and I hope there won’t be any problems with this manufacturer anymore, since I like their attitude and cooperation spirit.

The Rebel P20 1200 is a fully modular unit with ultra-compact dimensions thanks to the restricted 140mm depth. As I mentioned several times before, in previous reviews, I am not so fond of small, in size, PSUs because, in most cases, the small dimensions affect noise output. In this unit, the average noise output is within 30-35 dBA, Cybenetics Standard++ rating, so it is decent, given the maximum power of 1200W. When a powerful PSU delivers high loads, the system’s overall noise output will be high since the cooling solutions on the CPU and GPU will be stressed unless it uses a custom-made and high-capable liquid cooling solution for both. This means that even if the PSU runs silently at high loads, don’t expect the other PC parts to do so.

ATX v3.1 1200W PSU Reviews:

Technical Specifications:
  • Manufacturer (OEM): Andyson
  • Max Power: 1200W
  • Cybenetics Efficiency: [115V] Cybenetics Platinum (89-91%) [230V] Cybenetics Platinum (91-93%)
  • Noise: Cybenetics Standard++ (30-35 dB[A])
  • Compliance: ATX v3.1, EPS 2.92
  • Operating Temperature (Continuous Full Load): 0 – 40 °C
  • Alternative Low Power Mode support: Yes
  • Power 12V combined: 1200W
  • Number of 12V rails: 1
  • Power 5V + 3.3v: 100W
  • Power 5VSB: 15W
  • Cooling: 120mm Fluid Dynamic Bearing Fan (HA1225H12F-Z)
  • Semi-Passive Operation: ✓ (selectable)
  • Modular Design: Yes (Fully)
  • High Power Connectors: 2x EPS (2x cables), 4x PCIe 6+2 pin (2x cables), 1x PCIe 12+4 pin (600W)
  • Peripheral Connectors: 11x SATA (3x cables), 8x 4-pin Molex (2x cables)
  • ATX Cable Length: 600mm
  • EPS Cable Length: 700mm
  • 6+2 pin PCIe Cable Length: 550mm
  • 12+4 pin PCIe Cable Length: 600mm
  • Distance between SATA / 4-pin Molex: 150mm
  • In-cable capacitors: No
  • Dimensions (W x H x D): 150 mm x 85 mm x 140mm
  • Weight: 1.67 kg (3.68 lb)
  • Warranty: 2-years
  • MSRP (including VAT): 190€

Power Specifications

Rail 3.3V 5V 12V 5VSB -12V
Max. Power Amps 20 20 100 3 0.3
Watts 100 1200 15 3.6
Total Max. Power (W) 1200
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