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Zalman ZM750-HP Power Supply Review
Date Published:
08-11-2008
Written By:
Temujin
Edited By:
Diceman
Provided By:
Zalman
Where to Buy:
Acoustic PC
Discuss Article:
VH Forum link
Pages: 1 2 3

Introduction:


Zalman ZM-750HP Power Supply

   If you mention the name Zalman, quite few product images and experiences come to mind. You've no doubt seen their past award winning CPU coolers, HTPC enclosures, and water cooling. Among some of their other products, you'll find more case fans, fan controllers, thermal greases, mice, audio products, and power supplies.

About eight months ago, Diceman the Editor in Chief, had the pleasure of checking out one of their heat pipe technology power supplies. The Zalman ZM-850HP boasted six 12 Volt power rails all providing 18 amps each. Even by today's standards, that's a heap of power for the Intel Core 2 Quad systems boasting NVidia SLI graphics cards.

Well, the stigma behind everyone thinking they needed 1000 Watt power supplies to have the perfect performing system has all but faded away. When Quad Core and SLI first arrived, everyone was afraid that it absolutely required a top end PSU with huge wattage. To the experienced computer system user, they knew this was an expensive and unnecessary upgrade. It was left to us to help educate everyone else to the folly of that belief.

It's just now becoming apparent where a PSU offering 700 watts and higher are truly needed. In fact, just about every SLI system I've seen has a 700 to 800 watt PSU. If you're ever really questioning just how much power is enough, you can check out some of the more elite system builders like Velocity PC. Often, they pick a PSU that can ample power for now and a little extra for future upgrades.

Zalman came forward and offered us another PSU from their Heatpipe Cooler series. Today, I'll be taking a look at the Zalman ZM750-HP (Heat Pipe) 750 Watt Power Supply. It'll definitely be put to the test to see how well the unit has been designed. Who knows, maybe there'll be some smoke!

Specifications:

Output Power Cable Specifications  
[Cable Types and Functions]


My Life On Lin

[Dual-Connector (ZM-DC1) Components]


My Life On Lin

Electrical & Physical Characteristics 

AC Input Range Voltage 100VAC ~ 240VAC ±10% DC Output
Frequency 47Hz~63Hz ZM750-HP
AC Input Current
(Rated)
115VAC 12A Output V. Output Load Rating Combined
Power
230VAC 5.5A Imin Imax Ipeak
PFC Type Active PFC +3.3V 0.8A 30A   160W 750W
Power Factor 99% Maximum
 
+5V 0.5A 30A  
Inrush Current Limit
(@ Cold start at 25°C)
115VAC 60A +12V1 0.5A 20A   720W
230VAC 100A +12V2 0.5A 20A  
Efficiency 86% Maximum @230VAC, Full & Typical load
 
+12V3 0.5A 20A  
DC Output
Voltage
Regulations
Output V. Regulation Range At Full
Load
+12V4 0.5A 20A  
+3.3V ±5% +3.14V~+3.47V -12V 0.0A 0.8A   22.1W
+5V ±5% +4.75V~+5.25V +5VSB 0.0A 2.5A 3.5A
+12V1 ±5% +11.4V~+12.6V Protection Features
+12V2 ±5% +11.4V~+12.6V Over Voltage Protection(OVP)
+12V3 ±5% +11.4V~+12.6V Over Current Protection(OCP)
+12V4 ±5% +11.4V~+12.6V Short Circuit Protection(SCP)
-12V ±10% -10.8V~-13.0V Over Temperature Protection(OTP)
+5VSB ±5% +4.75V~+5.25V Under Voltage Protection(UVP)
DC Output
Ripple
& Noise
Output V. Specification At Full
Load
Ambient Temperature
+3.3V 80mV Operation 0°C ~ +50°C
+5V 80mV Storage -20°C ~ +80°C
+12V1 150mV Ambient Humidily
+12V2 150mV Operation 5%RH ~ 95%RH
+12V3 150mV Storage 5%RH ~ 95%RH
+12V4 150mV Dimensions
-12V 150mV 165(L) x 150(W) x 86(H) mm
+5VSB 80mV MTBF(25°C) 100,000 hours

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