Super Flower/TTGI TT-350SS Power Supply

Virtually silent PS with 140mm fan – Brian Berryman

SUMMARY: Truly totally silent


(Image courtesy of Directron)

The good folks at Directron have sent us another Power Supply Unit (PSU) to evaluate. Super Flower/TTGI’s
TT-350SS 350 Watt Switching PSU.

Sharing somewhat similar features as the
that I reviewed last month, this PSU also comes from Directron’s stock of
“Quiet Computing”


This PSU does have a couple visual differences to the previously reviewed model.

While both have a very similar chassis, this one comes in a mirrored finish.


This model also features a 140mm (14cm) single fan (versus the 120mm fan in the TT-550SS). The fan does have four very bright LEDs built into it, and the color of the LEDs
match the casing. The fan blades light up quite brightly from the four LEDs;


Despite the enormous fan used in this, it’s absolutely silent, as it spins at a very low rotational speed. Like the PSU I reviewed last month, this one also features the
three speed switching modes, with the switch located in the same place on the rear, next to the power cord socket. From the product page at Directron:

“Do you want real cooling power? This high quality power supply uses a single unique 14cm (140mm) LED fan to provide massive cooling power. This awesome fan is
controllable via a 3 speed thermal control switch on the back of the power supply unit. This switch allows you to configure the unit to your own preferred noise vs airflow balance.


Included with the product are: power cord, four case screws, and a user’s manual

Specifications next;


Also, from Directron’s product page;

“Features: Supports Intel ATX 12V ver.1.1 & 2.03 Standard. Compliant With AMD K8 (Opteron). High Quality 2 Ball Bearing Fan, Suitable For “ALWAYS ON” application.
Fast Cooling, Low Noise & Ripple. 3 Speed Thermal Fan Control Switch. Fan Grill & Gold Plated Connectors, Preventing Rust & Bad Connection. I/O Short circuit & Overload
Protection Design. Standard 14cm LED fan. Golden-coated connector.”


Like the TT-550SS, this one also is “AMD K8” ready.

Given the highly reflective casing, it was a bit difficult to get a real clear picture of the numbers on the decal, so I’ll list them below. They are;



















+5v VSB



  • +3.3v & +5v = 183W
  • Total Power = 350W
  • Max Peak = 410W

Quite good numbers, for a 350W PSU.

The harnesses


This model also comes with a lotta “spaghetti”

The harnesses on this model also feature a great selection of connectors, and are extremely long. The main ATX power lead is sleeved in black plastic “flex”
material, like it’s bigger sibling.

Connectors available:

  • 1x 20 pin ATX power
  • 1x 4 pin ATX12 power
  • 1x 3 pin fan monitor lead
  • 2x floppy drive connectors
  • 2x Serial ATA (SATA) connectors
  • 7x 4 pin Molex connectors

The way the connectors is configured is slightly different, however. This model puts both of the SATA plugs onto the same lead, which should make them easier to route
if needed.

The 4 pin Molex connectors are arranged differently, and there are two fewer of them than the TT-550SS model.

Harness measurements:

(From left to right as pictured above)

  • 1st accessory lead: 22.5″ to first 4 Pin Molex, 6″ to 2nd 4 PM, 6″ to floppy connector
  • 2nd accessory lead: (identical to 1st lead)
  • 3rd accessory lead: 22″ to first 4 Pin Molex, 5.5″ to 2nd 4 PM, 5.5″ to 3rd 4 PM
  • 4th accessory lead: 17″ to first SATA connector, 6″ to 2nd SATA connector
  • 4 pin ATX12 power: 22.5″ long
  • 2 pin fan (?) lead: 26.5″ long
  • 20 pin ATX power: 22.5″ long

These are actually slightly longer than the leads on the TT-550SS.


When I first plugged this in on the bench, I was amazed at just how quiet it really is. On the lowest fan speed setting, it is totally inaudible.

On the highest, it’s still extremely silent. It’s definitely quieter than the TT-550SS. This is due to the larger fan size used (14cm vs. 12), spinning much slower.

It still pushes a considerable amount of air, however. Once again, I could turn up no solid numbers of CFM for the fan used in this unit. I think you might well imagine
how much air a 140mm fan spinning at around 2000 RPM might move though. A lot.


I installed this into my watercooled main/gaming rig, as the green coloring matched the rest of the machine’s theme.

Plus, it would be a good test for the unit, to see if it could keep up with the high demand this rig places on the PSU.


Here’s a picture showing how much light that fan does emit. The only other “light” that’s on in this image is the power LED on the motherboard (red).


The machine as tested

Water file shot

The machine, fully lighted

Power draws, in the top box:

1x 172mm Comair Rotron Patriot fan (24v running on 12v), 1x (12″) blue cold cathode light

Power draws, in the main case:

NF7-S motherboard, XP2100+ (@ 2200MHz) CPU, GF4 Ti4200 AGP card, 2x sticks of DDR, 1x hard drive, 1x floppy drive, 2x optical drives, 2x (12″) cold cathode lights, 2x 5 foot EL wires,
4x LED “feet”, 1x 40mm fan, 1x 50mm fan, 1x 80mm tri-LED fan, 4x Sunon Model # KD1208PTB2 80mm fans.

TT hi-lo

Even with all of this draw, the +12v rail doesn’t drop below 11.60v. I checked these numbers with a multimeter, and they were very accurate. The machine hasn’t suffered any kind of
power related failure, since installing this PSU about three weeks ago.


For a PSU that’s designed to be silent first and foremost, this unit delivers a solid output of power, that more than keeps up with the heavy demand this machine places on it.

Like the bigger TT-550SS, it does this while putting out little to no noise at all.

These units are available from Directron in four colors; green, blue, black, and red.

This is the second TTGI/Super Flower power supply I’ve had the opportunity to evaluate in the last month. Both of them have exceeded my expectations of performance, quality and value.

Again, I’d like to thank Directron for allowing me to test this item out.

Email Brian

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