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Old 21-06-2010, 04:57 PM   #1
eva2000
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Talking 1200W Corsair AX1200 Power supply overview and review

Corsair Blog posted an overview for their new 1200W AX1200 power supply and Jonnyguru.com posted a AX1200 review. Single 12V rail at 100.4 Amps!

The AX1200 looks like one awesome power supply with near 90-94% efficiency and very low ripple ! Unfortunately, only has 6x 6+2pin PCI-E connectors, so no native 4 way crossfireX with 4x HD5870 heh.



Summary of Key Features

Unique Design, Exclusive to Corsair
The Professional Series Gold AX1200 has been designed from the ground-up by Corsair’s power engineering team, and is therefore unique and exclusive to Corsair.

100.4 Amp Single +12V Rail
The AX1200’s massive 100.4 Amp (1204.8 Watt) single +12V rail makes it the ideal power supply for ultra-high end NVIDIA SLI™ and ATI CrossFireX™ gaming PCs based around multi-core CPUs.

80 Plus® Gold Efficiency
The sophisticated electrical design, incorporating advanced magnetic modeling during development in order to optimize magnetic component performance, delivers exceptionally high energy efficiency (90% and above). This meets or exceeds the requirements for 80 Plus Gold certification.

Outstanding Noise/Ripple and DC Voltage Regulation
The AX1200 features individual DC-DC regulation for 3.3V, 5V and 12V rails, and secondary side synchronous rectification, utilizing MOSFETs that have lower losses than the conventional output rectification schemes. An advanced 4-layer modular connector board PCB ensures a better ground return plane, lower resistance and low voltage drops. This, combined with circuit trace optimization, also helps to minimize ripple and noise.

Fully Modular Cable System
The fully-modular, low-profile cable system provides maximum flexibility when building or upgrading your PC, and maximum airflow through your chassis. This allows you to utilize only the cables that you need, reducing cable clutter and maximizing the cooling performance of your PC.

Zero Voltage Switching / Zero Current Switching Technology
The Corsair AX1200 utilizes ZVS / ZCS technology to switch at near 0V and 0A, which ensures there are minimal switching losses, thereby maximizing efficiency and further reducing waste heat.

Ultra Low Noise Design
The AX1200 utilizes a low-noise, thermally-controlled 140mm fan, and employs sophisticated techniques to enhance cooling performance and reduce noise. This includes a specially designed PCB that channels airflow to reduce back-pressure and maximize the fan’s cooling ability.

Summary
The Corsair Professional Series Gold AX1200 has been designed for one purpose alone — to be the best 1200 watt power supply on the market. By utilizing a server-grade powertrain architecture, incorporating ZVS / ZCS, independent DC-DC regulation, and premium quality components, the AX1200 delivers class-leading voltage stability and efficiency, and minimal ripple and noise*. A PCB designed using advanced fluid dynamics modeling, combined with efficiency levels of more than 90% at typical loads, means that the AX1200 generates minimal heat and noise levels. Taken as a whole, the Corsair Professional Series Gold AX1200 is the clear choice for enthusiasts who want the highest-quality power supply for their extreme gaming PCs and workstations.
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Old 20-07-2010, 03:40 AM   #2
rlm
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Seem to remember you doing a review (could be wrong) on the HX1000 a couple of years ago. I picked one up at the time for a build I was doing. It was cheaper than the other 1kw models and a decent unit. I'm sure this one is certainly worth consideration.

edit: Just checked out jonnyguru. Straight to conclusion and 9.8. A winner!

RLM
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Old 20-07-2010, 02:35 PM   #3
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$300 street price is a little high I think.
AX1200 is likely to be expected as a new C/P choice, never as a top performer.
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Old 22-07-2010, 02:52 PM   #4
eva2000
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Here in Australia we're use to high prices normal 1000w units go for AUD$300-390 while 1200w units AUD$300-400, so looks about right for 1200w with such high efficiency and 7yr warranty!
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Old 22-07-2010, 05:16 PM   #5
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I meant the price in US.
ppls outside US or HK would never have a price as good
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Old 22-07-2010, 07:15 PM   #6
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SUch a sexy psu, full modular and 80+ gold with great efficiency!
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Old 24-08-2010, 01:12 PM   #7
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if anyone wants to gift me one for testing i will see how it holds up in my pc
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Old 24-08-2010, 11:03 PM   #8
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a fair few teamau guys have one of these babies to show off
real nice psus these ones
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