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Jeantech Storm 700w

Jeantech Storm 700w

Introduction

Jeantech are quite well known in the PC enclosure market, but have recently begun trying to make a name for themselves in the Power Supply market. Well today I have the priveledge of reviewing their flagship PSU; the Storm 700w. Hopefully my first look at their products won’t disappoint…

About Jeantech

The Jeantech Group, founded in1989, is a professional manufacturer of high quality stamping moulds and PC chassis including ATX cases, server cases and 19″ rack mount cases, etc. With factories in Taiwan and mainland China, Jeantech has been able to serve markets worldwide. Our continuous innovation and fast service allow all of our customers to become leaders in their respective fields. The flexible service we follow in design, modification and delivery is designed to give satisfaction to all of our customers. Our China-based factory is capable of producing 200,000 units per month, with 250-300 employees.

Specs

  • Triple + 12V Output Rails
  • Advanced Double Forward Circuit and Double-Layer PCB
  • Active Power Factor Correction
  • Super High Efficiency Maximum 84%
  • Patented Design: Real-Time Power Watcher
  • Ultimate Balance Between Cooling and Noise Level
  • Honey Comb Structure for Outstanding Ventilation
  • Additional 4 pin Connector with Thermal Control Function for case fan
  • 2 Ball Bearing / Long life 12cm fan
  • Anti Vibration Pad
  • All Output Cables with Nylon Sleeving
  • Gold plated Terminal
  • Flexible Connector and System Design
  • Patented Easy Swap Connector
  • Dual PCI-Express Power Connectors Fully Supports SLI & Cross-Fire systems

Power of the Storm

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Opening up the package, the Storm was sat well protected in a lot of polystyrene, ensuring its safe delivery here. The retail box of the product was well designed, and all in English which is a refreshing change from boxes covered in every language under the sun.

Jeantech Storm 700w

The rear of the box gives extensive listing of the PSU’s features and capabilities. The most notable are the very high efficiency (min. 72% max. ~84%), the watt readout on the rear, and the modular design.

Jeantech Storm 700w

The PSU is packed with a cable for every purpose, providing connectors for all of your gaming hardware. The Storm 700w is Crossfire/SLi compatible and comes equipped with two PCI-e leads to power your graphics cards. There is:

1 x 20+4 Main power (Standard ATX)
1 x CPU Connector (4+4) pin
2 x 6 pin PCI-E VGA
8 x 4 pin Peripheral Power Connector
2 x Case Fan Connector
2 x 4 pin Floppy Drive Power Connector
1 x Case Fan Speed Monitor
4 x S-ATA

So basically something for everyone…

Jeantech Storm 700w
Jeantech Storm 700w
Jeantech Storm 700w
Jeantech Storm 700w

The PSU looks awesome. Simple as that. The rear of the unit is honeycombed meaning that the airflow is not impeded. Also on the back is the watt usage readout. This consists of a small red LED display that shows how much power is actually being drawn from the Storm in real-time. While this isn’t a necessity, it is damn cool. The unit itself is covered with a slightly glossy finish, rather than an ultra glossy unit which picks up fingerprints too easily.

The power supply is surprisingly small considering it pumps out 700w at peak. The Spire 600w is longer than your average PSU, and the Storm puts it to shame. This PSU would easily fit into an mATX case, which is slowly becoming more and more of an issue in the realms of media PCs.

The PSU is fully modular meaning that you can choose which cables to use. It also means that if one of the cables is faulty then you can easily get a replacement, although this isn’t likely to occur. The cables that Jeantech supply are fully braided and flexible, enabling a smooth install process and cleaner cable management. The cables are quite long, providing the length for the PSU to be used in a larger case.

Jeantech Storm 700w

The Storm 700w is cooled by a single quiet 120mm blue LED fan. This fan is temperature regulated meaning that your PC is will be as quiet as possible at all times. The temperature regulation goes further than just the PSU fan, as the unit has special fan connectors which are also temperature controlled. You simply use the molex plug from the PSU and that fan will be varied depending on the PSU temperature. Another extra with this unit is the anti-vibration rubber pad that can be stuck to the back of the product lowering the amount of vibration that the PSU could pass onto the case. This little feature goes to show how important quiet computing is to Jeantech.

The unit is also RoHS compliant meaning that when its time to dispose of the Storm the environment doesn’t suffer.

Installation

Due to the bendable cables, installation is easy. Also the size of the unit makes it a lot easier to fit into a case where space is an issue. The biggest problem with the power supply is choosing the cables that you need to use for your system. I ended up using 2 molex leads, 1 SATA lead and the ATX power lead.

Usage

Jeantech Storm 700w

Once I turned on my PC, the soft blue glow was the first thing that I noticed, the second was the pleasing lack of noise from my case. I decided to connect the front 120mm, the rear 120mm and the side 80mm fan to the temperature controlled lead from the Storm. After a while, running Folding@Home, the fans soon started to pick up pace and you can hear them slowing gaining speed. I powered up Battlefield 2142 to play a couple of games, and the fans all started to make their presence known. After a while, the fans all seemed to go quiet, except for at certain points where they would go at full pelt for a few seconds, then turn off again.

The rear readout for wattage consumption is quite interesting to look at. You can actually see the change between full load and idle, using a 3D application or otherwise. It is definitely a gimmick that is fairly pointless, but I love it :). The only reason I could see for it, would be to tell whether you need to purchase a more powerful power supply to feed more juice to your rig, although 700w is plenty for most. My 3.5ghz P4, ATI x1650 512mb pulls about 200w at full load, and a Celeron 400mhz pulls about 45w at full load. Obviously Intel’s power management has improved from 1999…

Testing

I left my PC idle for just under 30 minutes, and here are the results. The results were double checked with a multimeter plugged into an unused molex connector.


12v idle


5v idle


3.3v idle

I then started Folding@Home, ran StressPrime 2004, had AtiTool 3D open and played music as loud as the PC would allow for 1 hour. Here are the results:


12v load


5v load


3.3v load

The results show that the power supply is pretty stable, with the rails varying by the following:

Idle (volts)

Load (volts)

3.3v

0.03

0.04

5v

0.13

0.02

12v

0.00

0.06

The rails hardly vary at all, and oddly the 5v rail is more stable when under load. It should be noted that my rig was only using ~220w of power which is about a third of the PSU’s full potential, even with an overclock.

This power supplies true potential can only be seen in an excessive dual GPU gaming rig. My Northwood CPU draws 82w at full while a Conroe will draw 65w. It would seem that a high wattage on a power supply is only needed to feed excessive graphics card setups. Power supplies are now being made to be more and more stable, rather than ridiculously powerful; which is exactly what the Storm 700w has done.

I tried connection the temperature controlled molex to my 120mm CPU fan. Unfortunately, after leaving my PC on folding away, I came home to SpeedFan reading 71C. The PSU smelt like it was burning; something was definitely wrong. I quickly unplugged the CPU fan from the temp controlled lead, and onto a standard molex. As soon as I removed the fan, the PSU kicked in and all the fans in my case went at 100%. After about 10 minutes, my PC calmed down. Suffice to say, the Storm 700W doesn’t like my CPU fan, or my CPU for that matter… The best course of action would be to never use a temperature controller on your CPU unless you know that it works.

Conclusion

With sleek looks, highly original rear wattage readout, quiet computing, budget price, modular design, stable rails and headroom for more powerful PC components, the Storm 700w ticks every box.

ProsCons
ModularIsolated CPU overheat issue
Silent and stable12v is a LITTLE off
Watt readout

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