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TTGI 420SS Power Supply

Company: TTGI
TT 420 SS
Street Price: ~$65 USD
Date Reviewed: December 13, 2002
Reviewed By: Joey C. aka Chong345
Rating: (9/10)



The power supply of a computer system is the lifeblood of the whole machine. Many PC enthusiasts fail to understand just how important power supplies are to the system. Having a power supply that does not provide “clean” power can cause system instabilities and even possibly damage components. Therefore, it is easy to see why power selection is a major choice. When overclocking, the power becomes crucial as more power is drawn due to increased voltages on the CPU and memory. TTGI has designed a power supply in hopes of providing good power; let us see how well it does.


Features and Specifications:

  • Fully Support ALL Intel and AMD series demand
  • Dual two-ball bearing fans, long life, noiseless and fastest cooling time
  • High-Quality gold-coated fan cover and connectors (better conduction)
  • (Tube-tide) design, Tidy your wires
  • All DC output wires have 45 cm length
  • Fan-speed control adjustable. (Auto, Middle, Low) (optional)
  • Over voltage protection, Short circuit of on all output levels
TTGI 420 SS Specifications
DC Output +3.3V +5V +12V -12V -5V +5VSB

Max output

Max combined

28A 42A 16A 0.8A 0.5A 2A
210W 192W 9.6W 2.5W 10W
400W 22W

The power supply is packed in bubble wrap and it comes with a power cable to go to the electrical outlet and some screws to mount it to the case. It has 10 IDE connectors, 2 Floppy Connectors, a 20 Pin motherboard and a 4 pin, and an 8-pin connection as well. On the power supply are two globe fans. They are dual ball bearing so they have longer lifetime. The fan on the bottom draws air away from the CPU and the rear fan blows air out of the case. In AMD’s cooling guidelines, they suggest that this is the best for cooling. A switch on the back of the unit can control the fan speeds. The user may choose Auto, Low, or Middle. Auto is quiet and the fan speed in controlled by the power supply temperature. Low is obviously quiet all the time and middle is a little louder than most want to hear. It is nowhere near the noise level of a Delta or Vantec Tornado but it could get on some peoples nerves.


Continue To Page 2 For Testing & Conclusion -->



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