Reviews - Thermaltake Toughpower XT Gold 1375W
Sample Provided by: Thermaltake (By OklahomaWolf on Wed, Jun-20-2012)

Page 1 - First Look

Howdy, readers. As you can see by the above picture, I'm bucking the trend of the usual power supply reviews here at the site; and instead reviewing one of the moons of Saturn. And what a fine looking moon it is, too, with its marketing and 80 Plus Gold logos... oh, wait, I've made another mistake. It's not a moon, it's too rectangular for that. It's a little house for capacitors.

Yes, I'm reviewing the new Thermaltake Toughpower XT Gold 1375 watt unit. This is not the biggest one in the line, there's actually one more above it at 1475W. Which, as I type this, is doing its best to deform my metal shelf supports. But I decided to tackle the little one today, so it's the little one you're going to read about.

Up to 92% efficiency, eh? We'll see about that. Most Gold units bragging about that really mean they'll only do it at 230V, where you and I and most everyone else on this continent won't be running it at. The load testing platform will tell all. Meantime, I have some box related stuff to tell you about.

And here starts the marketing trolley.

  • High Quality Japanese Made Electrolytic & Solid Capacitors
    Toughpower XT GOLD features 105°C/221°F Japanese made electrolytic capacitors & solid state capacitors with low ESR, which greatly improves the durability and offers the highest stability and reliability.
    -Here we see equivalent series resistance (ESR) being turned into marketing, but really... the secondary side capacitors have to be low ESR or the design don't work real good.
  • Full Bridge & LLC Resonance and Interleaved PFC Circuit Design
    Toughpower XT GOLD adopts full bridge & LLC resonance circuit for extremely stable performance & reliability. Besides, built in the interleaved PFC circuit, Toughpower XT GOLD also provides extremely high PF value and high PSU efficiency.
    -Ah, good, no need for me to reverse engineer the circuit, then.
  • S.P.T. Indicator: Quick Status Monitor
    When you open the side panel of your chassis every time, you can see the PSU status quickly and easily. S.P.T. Indicator with 3-mode LED (standby / power good signal / temperature) for real-time monitoring over the power supply not only helps users to know the PSU working status, but also prevents the abnormal situation to protect the system.
    -Wait, I'm confused... how do a bunch of little lights prevent the abnormal situation? The Situation's been pretty darned abnormal every single time I've seen him. Often, I get the urge to "abnormal" him in the back of the head with a Snooki. A Snooki is modern slang for a baseball bat, right?
  • High Current Massive +12V Rails
    High current +12V rails offer maximum compatibility with the latest components.
    -Or, high current +12V rails offer maximum hardware smoking potential if you should happen to have a defective connector somewhere in the system. I've said it before and I'll say it again: multiple 12V rails are not bad. In fact, on units this size, I consider them preferable. Seriously, you could arc weld with the currents these monsters are capable of. Yeah, this unit does have dual 12V topology, but at 50A and 70A, the level of protection there is still pretty minimal.
  • ECO Design
    80 Plus GOLD certified.
  • Smart Fan Control System
    Optimize the thermal performance and minimize audible noise.
    -There's a little graph that goes with this one, which says the unit has a fanless mode until the 50% load level. I'll see if I can make note of where it turns on, however it is unlikely I will be able to do so in the hot tests due to the fact that I'm not a Smurf capable of sitting inside the hot box watching the fan. The cold tests may have to suffice.

The marketing trolley continues on to this side of the box. Most of it is stuff we already saw, so I won't sit here and type it again. About all the new stuff we learn here is confined to the PCI-E wiring being 16 gauge. I should hope so.

How about we commence to unpacking this beast now?

Inside the box, I found a power supply in a cloth wrapper, bag of modular cables, user guide, warranty statement , power cord, screws, and some zip ties.

Here's the user guide. Could use a little more info, but then again most of these could stand improving in one way or another.

Here's the warranty policy. You get seven years on this bad boy.

I have to stop here and do some hardcore complaining now. That, people, is an 18 gauge power cord. Guess what? It's too small. It's a fire hazard with a 1375 watt unit. Now, this would be fine if you never went over, say, 1000 watts at the wall with this thing. But the minute you plugged in that fourth video card, you'd be in trouble. I don't really know what the deal with this is, but Thermaltake... you gotta deal with this. 14 gauge would be good. That's what most units this size come with. 16 gauge is acceptable up to about 1200 watts of output or so.

But 18 gauge? Does not belong here. I tracked down the actual product page for the power cord (not easy) to here. They say 10 amperes at most. Assuming 100% efficiency, that's 1150 watts at 115V AC, which is what my lab routinely sees on these big units. But no power supply is 100% efficient, is it? Here in the real world, we have to consider things like brownouts, too. This is a score changer. And what really gets to me is, the second I saw this I opened up the 1475W unit on the shelf. It has the same power cord. That dog won't hunt for me. That car won't drive. That canoe won't fly. That ice cream won't prestidigitate. You say my expressions aren't making sense? Well, do they make more sense than a 1375W unit with an 18 gauge power cord?

Putting aside the potential fire hazard for a second, we'll take a look at the unit itself. It's big. It's bold. It has a stamped fan grille. It comes with an 18 gauge power cord. Sigh. But at least it has a nice big clackety clack style power switch.

Another look at the unit for you. You can see the SPT indicators there on the side of the unit.

You know, I'd feel a lot better if this unit had a C19 power connector. At least that way, we could insure the proper size power cord. I have yet to see one of those come with dinky little 18 gauge wires. In fact, I have one on the shelf I keep on hand just in case I need it, and it's a 14 gauge cord.

One side of the unit.

And the other side, with the SPT indicators.

Are you a fan of fans? Then you'll be pleased with this shot.

Ah yes, 15A input max. Perfectly safe for an 18 gauge stranded power cord. Pardon me while I roll my eyes a couple dozen times.  Remember, it has to be seeing 10A at the wall, which means that presuming you have an 87% efficient unit at full power, you're looking at a 900 watt power supply to be safe.

I'm going to be paying special attention to the current display section of my power meter in the cold tests. We'll see what this beast really draws.


+3.3V +5V +12V1 +12V2 -12V +5VSB
25A 25A 50A 70A 0.8A 4A
Max Power
@ 50°C
150W 600W 840W 9.6W 20W

On to the cabling. Though not fully modular, not too many cables are hardwired to this unit. Just the ATX cable and two CPU power cables. I would have preferred a hardwired PCI-E and one of the CPU cables made modular, but really... that's not too big a deal at this power level.

Here's the modular connector bay, with helpful labels describing where each 12V rail goes. Except the hardwired ones, which are all on 12V1.

On to the modular cables themselves. And there are a lot of them. Indeed, you can plug four video cards into this beast if you want. A few of the cables are combination Molex and SATA, for those of you who need a mix of both.

Type of connector: Thermaltake
ATX connector (520mm) 20+4 pin 12V1
8 pin EPS12V connector (520mm) 1
4+4 pin ATX12V/EPS12V connector (520mm) 1
Modular Cables
SATA (550mm+150mm+150mm+150mm) 8 12V1
5.25" Drive (550mm+150mm+150mm+150mm) 4
5.25" Drive to 3.5" Drive Adapter (+150mm) 2
SATA (550mm+150mm+150mm+150mm) 8

     5.25" Drive (+150mm)

6+2 pin PCIe (550mm) 4 12V2
8 pin PCIe (550mm) 2
     6+2 pin PCIe (+150mm) 2
Unit Dimensions (L x W x H)
200mm x 150mm x 86mm


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