Articles: Cases/PSU
 

Bookmark and Share

(0) 
Pages: [ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 ]

Chieftec CFT-650-14C, CFT-700-14C, CFT-750-14C, CFT-850-14C

Now that I’ve done with the power supplies that come bundled with Chieftec’s system cases, I can describe individual products, i.e. power supplies that sell on their own. They start from a wattage rating of 650W and split into two series: Turbo and Super. I will discuss the Turbo Series first.

The Chieftec Turbo Series includes power supplies ranging from 600 to 1020 watts. I’ve got four models from 650 through 800W for my tests. They share the same platform and will be discussed all together.

The actual maker of these PSUs is the well-known developer Channel Well (CWT).

Exterior Design

The PSUs come in blue-painted housings. The case is somewhat longer than the standard 140 millimeters in order to accommodate a 140mm fan.

Every model in the series is equipped with detachable cables. To be exact, each of them has a few fixed cables (for the mainboard, CPU and graphics card) and seven connectors for peripherals.

They are Molex Mini-Fit Jr., quite a standard type. The connectors for peripherals and graphics cards have the same amount of pins but differ in color and the position of the keys, so you won’t be able to plug a cable in wrongly (unless you apply some very brute force).

Although two out of the four peripheral power cables are marked as S-ATA Connector and the other two as 4-pin Peripheral, they are actually absolutely the same. Every SATA or PATA power cable can be plugged into any of the four PSU connectors.

Circuit Design

The Turbo Series products discussed in this article are all based on the same platform developed by Channel Well.


CFT-650-14C

The interior layout may be called standard because the placement of power semiconductor components on three heatsinks is quite widespread already. Besides Channel Well, you can see this solution in power supplies from FSP and Seasonic. The first heatsink (the farthest in the photo) carries the diodes and transistors of active PFC, the second the power transistors of the main inverter, and the third the diode packs of the output rectifier.

The Turbo Series products below 850W use heatsinks made from aluminum bars with bent “fingers”. Those with wattage ratings of 850W and higher have more intricate extruded heatsinks.


CFT-850-14C

There are no other visual differences in the design of the PSUs of different wattage ratings. But if you take a closer look, you can see that the capacitance of the filtering capacitors grows up along with the wattage rating.


CFT-850-14C

Every product of this series features active PFC and dedicated voltage regulation. The regulator chokes are almost invisible in the photographs, being obscured by the branched heatsinks and bunches of wires.

A Champion Micro CM6800G chip is employed as the controller of both PFC and main regulator. It is installed on a small card fitted in between the PSU’s heatsinks.

Samxon heatsinks are used at the PSU’s output. You can see another additional card in the right of the photo: it carries a fan speed controller.

I have no complaints about the quality of assembly. The soldering is just an example of neatness.

 
Pages: [ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 ]

Discussion

Comments currently: 0

Add your Comment