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Today we have a review of the Tachyon 550W and the Silentnight 500W power supplies, two middle range, 80Plus Platinum certified products from Rosewill, the company which evolved from the in-house brand of an e-tailer to a stand-alone manufacturer. Both units share the same OEM and a similar output but each aims at a different target group. Read on to find out more about their features and performance.

Rosewill is one of the fastest growing suppliers of PC-related products in the North America at the time of this review. The company started off as an in-house brand of Newegg, the very large and well-known electronic store, but quickly grew into a stand-alone manufacturer, exporting their products in several other countries. Today the company designs, manufactures and exports myriads of products, including hardware for advanced users and enthusiasts. In this review we will be looking at two of their middle capacity but high performance power supply units, the Silentnight 500W and the Tachyon 550W. Although both power supplies are based on the same design, each is aiming towards a different market group. Read on to find out more about their similarities and differences, as well as their advantages and disadvantages.

Rosewill Tachyon 550W Features and specifications

80 PLUS PLATINUM Certified

Continuous [email protected]°C

Single strong 12V rail – idea for Gaming system

SLI & CrossFire Ready – 2 x 6+2pin Connector

Modular cable design

1x Silent 140mm Fan with Auto Fan Speed Control for better silence

Active-PFC with auto AC-input voltage adjustment(100-240V)

Black Coating Housing

Mesh sleeving on all cables for easier cable routing and better ventilation

Over Current/Voltage/Power Protection, Under Voltage Protection, and Short Circuit Protection provide maximum safety to your critical system components

Safety & EMI Approval: cTUVus, FCC, CE, ROHS

Model Tachyon-550 Series Tachyon Type ATX12V v2.31 & EPS12V v2.92 Maximum Power Continuous [email protected]°C Fans 1 x Silent 140mm PFC Active Main Connector 20+4Pin +12V Rails Single PCI-E Connectors 2x 6+2-pin Modular Cabling Support Yes SLI Support Yes Power Good Signal 100-500ms Hold-up Time > 16ms Efficiency > 87%, Up to 92% Over Voltage Protection Yes Overload Protection Yes Input Voltage 100 – 240 V Input Frequency Range 47 – 63 Hz Input Current 10A Output [email protected] [email protected] [email protected] [email protected] [email protected] MTBF 100k hours at 25°C, max. load, nominal input Approvals cTUVus, FCC, CE, ROHS Dimension 5.9 x 3.39 x 6.7 inch

150 x 86 x 170 mm

W x H x D Weight 2.5 kg

5.52 lbs Warranty 5-year One-to-One Replacement

Rosewill Silentnight 500W Features and specifications