Introduction and Features

The new ZM1350 is SilverStone’s largest PSU and offers excellent regulation, all-modular cables, and incorporates pots for tweaking the main output voltages.

After a four year hiatus, SilverStone's top of the line power supply series, Zeus, has returned. The all new Zeus ZM1350 was designed for elite IT professionals, PC power users, and overclockers and retains excellent characteristics from its predecessors with a continuous output capacity of 1350W (1500W peak) rated for 24/7 operation at 50°C, ±1% voltage regulation for exceptional stability, and careful selection of premium industrial grade components. Other aspects such as efficiency, modular cabling compatible with other SilverStone PSUs, switch for multi/single +12V rail selection, pots for tweaking voltages, and fan speed control are all improved to make the new Zeus ZM1350 the most sought-after power supply that SilverStone has ever designed.  

The Zeus ZM1350 PSU is fully modular and certified 80 Plus Silver (80 Plus Gold level efficiency when operating on 230VAC line power).  The ZM1350 features a switch to select between single or multiple +12V rails, incorporates three small pots for adjusting the +3.3V, +5V and +12V outputs, and has a fan speed override switch on the back panel to force the fan into constant full speed operation if desired.

Zeus  Power Supply Key Features:

• 1350 watt continuous power output at 50°C (1500W peak)
• 60°C operation with up to 1080W continuous power output
• Strict ±1% voltage regulation with low AC ripple and noise
• Patented six/single +12V rails selector switch
• User accessible +3.3V, +5v, and +12V rail voltage adjustment pots
• 80Plus Silver certified with 80 Plus Gold level efficiency at 230VAC
• Class leading +12V rails with combined loading up to 105A (1260W)
• Industrial grade components
• Active PFC (up to 0.99)
• Universal AC input (90-264 VAC) full range
• Advanced 100% modular cables
• Long-life dual ball bearing 80mm fan with speed control switch
• Protections: OCP, OVP, OPP, OTP, UVP, SCP, NLO
• Supports latest ATX12V 2.3 & EPS12V 2.93 standards

PSU Testing Methodology

Establishing an accurate load is critical to testing and evaluating a PC power supply.  PCPerspective’s power supply test bench can place a precise DC load on the PSU under test.  Each power supply is tested under controlled, real-world conditions up to its maximum rated load (at 40ºC), using both 115 VAC and 240 VAC line voltage.  Our current suite of tests includes:

• DC Load Regulation
• AC Ripple and Noise
• Efficiency
• Differential Temperature
• Noise

The SilverStone Zeus ZM1350 power supply was evaluated on both features and performance.  A full range of equipment was used to test the power supply under controlled load conditions. 

• (2) CSI3710A Programmable DC load (+3.3V and +5V outputs)
• (4) CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4)
• (2) 200W Precision resistor load bank (+12V5 and +12V6)
• Switchable precision resistor load bank (-12V and +5VSB)
• Agilent 34401A digital multimeter (Accuracy ±0.0035% vDC)
• Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)
• DS1M12 "StingRay" digital oscilloscope (20M S/s with 12 Bit ADC)
• Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC
• Extech Model 407738 digital sound level meter (Accuracy ±1.5 dB)

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