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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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