Thermaltake Toughpower XT 775W Power Supply Review

paulktreg - 2008-12-31 13:25:23 in Power Supplies
Category: Power Supplies
Reviewed by: paulktreg   
Reviewed on: March 9, 2010
Price: $154.99

Introduction:

Thermaltake, founded in 1999, have come a long way in such a short time to become one of the leading component suppliers in the PC enthusiast market. Thermaltake now offer a wide range of products from enclosures, power supplies, coolers, liquid cooling and accessories - everything needed to enclose, cool and power your latest and greatest gaming rig.

This time around, OCC are taking a look at one of the latest offerings from Thermaltake, a new addition to the XT range, the Thermaltake Toughpower XT 775W. It's an unusual offering at 775W and it's difficult to understand the need for one that falls in between the already available Thermaltake Toughpower XT 750W and 850W units. The only reason can be a design change with hopefully better performance and Thermaltake have taken the decision to slot these into an already successful XT range. If this is the case, then the Thermaltake Toughpower XT 775W could very well be a winner. Let's have a closer look at the power supply and its accessories and see how well it performs.

Closer Look:

The Thermaltake Toughpower XT 775W power supply packaging is based on a predominantly satin black theme with coloured illustrations and photographs used to good effect. The top face of the box carries a photograph of the power supply cooling fan grill with the Thermaltake logo at its centre and an orange coloured sash leaving no doubt about the wattage rating of the power supply. The base of the box illustrates with photographs some of the power supplies "Uniqueness & Design" features which include gaming-grade components, S.P.T. Indicator, 12Vin1 single 12V rail and FanDelayCool technology all of which will be covered later in the review. The specification table, quantities and connector types along with a graph to illustrate internal power supply temperatures and the influence of ThermalTake's FanDelayCool feature complete the picture.

 

 

 

 

 

 

 

 

 

 

Thermaltake Toughpower logos on the front face and a gradually faded in photograph of the S.P.T. indicator LED panel on the rear.

 

 

Not much to see on the end panels, a little note in several different languages informing the reader that the contents are a computer power supply and to visit the Thermaltake website for detailed product information and a small label giving model number and region code.

 

 

Lift the lid and the power supply is bubble-wrapped and covered with a layer of foam for protection. A black Velcro sealed bag sporting the Thermaltake COOLall YOUR Life logo containing the modular cables is neatly tucked down the side of the power supply. The orange sash is shown in the first photograph - I guess they use the same packaging for other power supplies in the series.

 

 

Bubble wrapped power supply along with box contents.

 

 

The Thermaltake Toughpower XT 775W power supply is well packaged with a good set of accessories. The power cord box also comes with a set of power supply mounting screws and four Velcro cable wraps bearing the Thermaltake brand name to help tidy up the cables once installed. Two leaflets are included, a Thermaltake warranty policy and user manual - more on this later. Let's move on, have a closer look at the power supply and its features then see how well it performs.

Closer Look:

The Thermaltake Toughpower XT 750W paint job is probably best described as satin olive green with a slight metallic sheen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The hexagonal holed exhaust grill, mains IEC input socket and mains on/off switch make up the rear panel of the Thermaltake Toughpower XT 775W power supply. The amount of time the cooling fan remains running after PC shut down, FanDelayCool, is fixed at approximately 30 seconds on the Thermaltake Toughpower XT 775W power supply and there is no user selectable timing switch on the rear panel like the older members of the XT range. The front panel carries the modular cable connectors, black for peripherals and red for PCI-E, next to the captive cable exit port. The captive cables sleeving does not enter the power supply making things look at little untidy.

 

 

One side of the power supply carries a label which gives power supply type and wattage rating along with a Tt Thermaltake logo. This label also carries the S.P.T. Indicator panel, from top to bottom, STANDBY, PG SIGNAL and TEMPERATURE status LED's. The opposite side of the power supply contains a small four slit ventilation grill.

 

 

The cooling fan guard grill is part of the casing and carries a Tt Thermaltake logo at its centre. The bottom face of the power supply carries a comprehensive specification label.

 

 

The captive cable consists of a 24 pin motherboard connector cable and a single cable carrying a 4+4 pin ATX12V/EPS12V connector and a 8 pin EPS12V connector. This is the more sensible approach to producing a modular power supply because these two cables are going to be needed in the vast majority of cases. The Thermaltake Toughpower XT 775W power supply comes with a comprehensive set of modular cables which include the use of RFI suppressing ferrite cores on the PCI-E connector cables.

 

 

The cooling fan is Thermaltakes fan of choice the TT-1425B which is actually manufactured by Honghua Electron Tech. Co. Ltd. under the model number HA-1425H12B-Z and rated at 12VDC 0.5A. A clear plastic baffle is fitted at the rear of the fan to help direct the airflow through the enclosure for optimal cooling.

 

The internal printed circuit board is well laid out and differs in design from previous XT models with the use of DC to DC converters for the +3V3 and +5V0 rails which should improve efficiency and reduce AC noise/ripple. The packaging of the power supply claims the Thermaltake Toughpower XT 750W power supply makes use of "High Quality Japanese & solid state capacitors". The solid state capacitors are used on the two DC to DC converter boards that can be seen vertically mounted on left hand side behind the mains input connector. The electrolytic capacitors are on the whole manufactured by Teapo based in Taiwan and China but we do have one Japanese manufactured capacitor, the main primary smoothing capacitor, made by Chemi-Con. The Teapo capacitors are all rated at a working temperature of 105°C which is the more acceptable rating for a power supply in this class.

 

The large surface area on the black aluminium heat sinks will provide more efficient component cooling in combination with the large high quality cooling fan. The build quality is very good with no problems to report.

 

 

The Thermaltake Toughpower XT 750W power supply is very well put together and in combination with a good set of accessories and sturdy packaging passes inspection so far, so let's move on.

Specification:

 

Review Sample: Thermaltake Toughpower XT Cable Management 775W Power Supply, Part Number TPX-775M.


Specification Table:

 

Thermaltake Toughpower XT 775W Power Supply Specification Table
AC Input
100-240VAC, 10A, 47/63Hz
DC Output
+3V3
+5V
+12V
-12V
+5VSB
25A
25A
64A
0.5A
3A
150W
768W
6W
15W
775W

 

System Protection:

No information given for system protection in the manual or on the packaging.

 

Safety & Agency Approvals:

UL, TUV, FCC & CE. Information taken from the icons on the power supply specification label because no details are given in the user manual or on the packaging.

 

Power Supply Weight:

 

Power Supply Weight
Manufacturer/Model
Weight
Thermaltake Toughpower XT 750W
2.3kg
5.0lbs

 

 

Power Supply Connectors:

 

Thermaltake Toughpower XT 775W Power Supply Connectors
24 Pin Motherboard
Captive
1
ATX12V/EPS12V 4+4 Pin
Captive
1
EPS12V 8 Pin
Captive
1
Peripheral 4 Pin
Modular
6
FDD
Modular
1
SATA Power
Modular
8
PCI-E 6 Pin
Modular
2
PCI-E 6+2 Pin
Modular
2

 

 

Power Supply Cable Lengths:

 

Thermaltake Toughpower XT 775W Power Supply Connector Cable Lengths
Captive
PSU > 20" > 24 Pin Motherboard
1
Captive
PSU > 20" > 8 Pin EPS12V > 6" > 4+4 Pin ATX12V/EPS12V
1
Modular
PSU > 20" > Peripheral > 6" > Peripheral > 6" > Peripheral > 6" > FDD
1
Modular
PSU > 20" > Peripheral > 6" > Peripheral > 6" > Peripheral
1
Modular
PSU > 20" > SATA > 6" > SATA > 6" > SATA > 6" > SATA
2
Modular
PSU > 20" > PCI-E 6 Pin
2
Modular
PSU > 20" > PCI-E 6+2 Pin
2

 

 

Features:

No feature list given by Thermaltake, so this list is pulled together from all the available information in the user manual and on the packaging.

Testing:

For more information on how we test our power supplies, please browse our testing methodology.

Electrical Safety:

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical Safety Test Class 1
Manufacturer/Model
Pass/Fail
Thermaltake Toughpower XT 775W
Pass

 

Short Circuit Protection:

I short circuited the 3V3, 5V0 and the 12V rail in turn. The power supply did shut down, and once the short was removed and the unit switched off for at least one second, resumed normal operation. Although listed here at the beginning of the testing section, I tend to leave this test until the very end, in case it doesn't quite go to plan.

 

DC Output Voltage Load Regulation:

 

Mains Input Voltage 110VAC

 

 

Thermaltake Toughpower XT 775W Power Supply DC Output Voltage Load Regulation
Supply = 110Vac/50Hz
PSU DC Rail
Measured Voltage(V)
3V3
3.38
5V0
5.16
+12V
12.11
-12V
12.21
5VSB
5.16
Total PSU DC Loading =  0W

 

Thermaltake Toughpower XT 775W Power Supply DC Output Voltage Load Regulation
Supply = 110Vac/50Hz
PSU
DC Rail
Rail Loading Amps (A)
Rail Loading Watts (W)
Measured Voltage (V)
ATX12V V2.2 Limits (V)
Pass/Fail
+3V3
3.23
10.92
3.38
3.135 – 3.465
Pass
+5V
4.93
25.49
5.17
4.75 – 5.25
Pass
+12V
10.18
123.18
12.10
11.4 – 12.6
Pass
-12V
0.35
4.07
11.64
10.8 – 13.2
Pass
+5VSB
2.10
10.67
5.08
4.75 – 5.25
Pass
Total PSU DC Loading = 174W (22% of Rated Maximum Output Power)

 

Thermaltake Toughpower XT 775W Power Supply DC Output Voltage Load Regulation
Supply = 110Vac/50Hz
PSU
DC Rail
Rail Loading Amps (A)
Rail Loading Watts (W)
Measured Voltage (V)
ATX12V V2.2 Limits (V)
Pass/Fail
+3V3
8.58
29.09
3.39
3.135 – 3.465
Pass
+5V
9.93
51.34
5.17
4.75 – 5.25
Pass
+12V
26.37
318.55
12.08
11.4 – 12.6
Pass
-12V
0.35
4.09
11.68
10.8 – 13.2
Pass
+5VSB
2.11
10.70
5.07
4.75 – 5.25
Pass
Total PSU DC Loading = 414W (53% of Rated Maximum Output Power)

 

Thermaltake Toughpower XT 775W Power Supply DC Output Voltage Load Regulation
Supply = 110Vac/50Hz
PSU
DC Rail
Rail Loading Amps (A)
Rail Loading Watts (W)
Measured Voltage (V)
ATX12V V2.2 Limits (V)
Pass/Fail
+3V3
13.54
46.04
3.40
3.135 – 3.465
Pass
+5V
15.12
78.17
5.17
4.75 – 5.25
Pass
+12V
52.10
628.85
12.07
11.4 – 12.6
Pass
-12V
0.35
4.13
11.80
10.8 – 13.2
Pass
+5VSB
2.07
10.47
5.06
4.75 – 5.25
Pass
Total PSU DC Loading = 768W (99% of Rated Maximum Output Power)

 

Mains Input Voltage 230VAC

 

 

Thermaltake Toughpower XT 775W Power Supply DC Output Voltage Load Regulation
Supply = 230Vac/50Hz
PSU DC Rail
Measured Voltage(V)
3V3
3.38
5V0
5.16
+12V
12.13
-12V
12.22
5VSB
5.16
Total PSU DC Loading =  0W

 

Thermaltake Toughpower XT 775W Power Supply DC Output Voltage Load Regulation
Supply = 230Vac/50Hz
PSU
DC Rail
Rail Loading Amps (A)
Rail Loading Watts (W)
Measured Voltage (V)
ATX12V V2.2 Limits (V)
Pass/Fail
+3V3
3.23
10.95
3.39
3.135 – 3.465
Pass
+5V
4.93
25.49
5.17
4.75 – 5.25
Pass
+12V
10.19
123.30
12.10
11.4 – 12.6
Pass
-12V
0.35
4.08
11.65
10.8 – 13.2
Pass
+5VSB
2.10
10.67
5.08
4.75 – 5.25
Pass
Total PSU DC Loading = 175W (23% of Rated Maximum Output Power)

 

Thermaltake Toughpower XT 775W Power Supply DC Output Voltage Load Regulation
Supply = 230Vac/50Hz
PSU
DC Rail
Rail Loading Amps (A)
Rail Loading Watts (W)
Measured Voltage (V)
ATX12V V2.2 Limits (V)
Pass/Fail
+3V3
8.58
29.09
3.39
3.135 – 3.465
Pass
+5V
10.06
52.01
5.17
4.75 – 5.25
Pass
+12V
26.69
322.68
12.09
11.4 – 12.6
Pass
-12V
0.35
4.09
11.68
10.8 – 13.2
Pass
+5VSB
2.11
10.70
5.07
4.75 – 5.25
Pass
Total PSU DC Loading = 419W (54% of Rated Maximum Output Power)

 

Thermaltake Toughpower XT 775W Power Supply DC Output Voltage Load Regulation
Supply = 230Vac/50Hz
PSU
DC Rail
Rail Loading Amps (A)
Rail Loading Watts (W)
Measured Voltage (V)
ATX12V V2.2 Limits (V)
Pass/Fail
+3V3
13.81
46.95
3.40
3.135 – 3.465
Pass
+5V
15.40
79.62
5.17
4.75 – 5.25
Pass
+12V
52.13
629.73
12.08
11.4 – 12.6
Pass
-12V
0.35
4.13
11.81
10.8 – 13.2
Pass
+5VSB
2.07
10.50
5.07
4.75 – 5.25
Pass
Total PSU DC Loading = 771W (99% of Rated Maximum Output Power)

 

The DC output voltage load regulation of the Thermaltake Toughpower XT 775W is excellent with little or no drop on the main 3V3, 5V0 and 12V rails from zero to full load, which is illustrated by the straight lines on the graphs. The -12V rail is a little on the low side and shows the characteristic rise towards -12V as the power supply is loaded but it at all times remains well inside the limits set down by the ATX12V V2.2 specification.

Testing :

Efficiency and Power Factor:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermaltake Toughpower XT 775W Power Supply Power Factors & Efficiency
Supply = 110Vac/50Hz
DC Load (W)
AC Load (W)
PF
Efficiency (%)
Pass/Fail
0
14
0.68
N/A
N/A
174
206
0.98
84.5
Pass
414
482
0.99
86
Pass
768
962
1.00
83
Pass

 

Thermaltake Toughpower XT 775W Power Supply Power Factors & Efficiency
Supply = 230Vac/50Hz
DC Load (W)
AC Load (W)
PF
Efficiency (%)
Pass/Fail
0
14
0.30
N/A
N/A
175
203
0.90
86
Pass
419
474
0.96
88
Pass
771
888
0.98
87
Pass

 

The efficiency and power factor levels easily meet the ATX12V V2.2 specification, but how do the figures stack up against its claimed 80 Plus Bronze certification? Bronze level certification requires a power factor of 0.9 at 50% DC loading and efficiencies of 82%, 85% and 82% at 20%, 50% and 100% DC loading and as can be seen from the results the levels are as required. Absolutely no problems here, so let's move on and have a look at DC quality.

 

AC Ripple On DC Outputs:

 

I have consistently found the AC ripple levels on the DC rails to be more or less equal with a 110VAC or 230VAC mains supply. The results given below are for 230VAC only but I will continue to check the levels at 110VAC during testing and publish them below if there are any significant differences.

 

AC Ripple On +3V3 Rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 10uS/div

 

AC Ripple On +5V0 Rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 10uS/div

 

AC Ripple On +12V Rail at 230VAC

Oscilloscope settings: Amplitude = 20mv/div, Timebase = 10uS/div

 

AC Ripple On -12V Rail at 230VAC

Oscilloscope settings: Amplitude = 20mv/div, Timebase = 10uS/div

 

AC Ripple On +5VSB Rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 10uS/div

 

Thermaltake Toughpower XT 775W Power Supply AC Ripple/Noise
Supply = 230Vac/50Hz
DC Rail
+3V3
+5V0
+12V
-12V0
+5VSB
ATX12 Max (mV p-p)
50
50
120
120
50
Ripple (mV p-p)
40
35
45
40
25
Pass/Fail
Pass
Pass
Pass
Pass
Pass

 

The Thermaltake Toughpower XT 775W noise/ripple levels on all the DC rails are all within the limits set down by the ATX12V V2.2 specification. No problems here, so let's move on.

Testing(Continued):

Temperature, Noise Levels and Fan Speeds:

 

I am not going to give a pass or fail in this section, as the ATX12V V2.2 does not really have any references on which to base a decision.

Temperatures are purely for information only, as there are too many variables involved when installed in a case, which, by the way, it wasn't. Ambient temperature, processor cooling efficiency and case cooling fans all play their part on the temperature of the air entering the power supply, and consequently the temperature of the air leaving it. No valid conclusions can be made from this test.

 

Thermaltake Toughpower XT 775W Power Supply
Temperature & Fan Speeds @ 110/230Vac
DC Loading(W)
Temp In (°C)
Temp Out (°C)
Δ Temp (°C)
Fan Speed (RPM)
0/0
N/A
N/A
N/A
1080/1077
174/175
20.5/21.6
27.6/28.2
7.1/6.6
1079/1080
414/419
22.3/21.4
35.8/33.3
13.5/11.9
1082/1080
768/771
22.3/22.4
48.5/47.2
26.2/24.8
1333/1314

 

The cooling fan on Thermaltake Toughpower XT 775W remained whisper quiet even a full DC loading with a maximum measured speed of only 1300 rpm and exhaust temperatures on a par with other power supplies in its class.

The FanDelayCool feature on the first generation of Thermaltake Toughpower XT power supplies had a miniature slide switch on the back panel which enabled the user to select the amount of time the fan remained running at PC shutdown up to a maximum of approximately 30 seconds. The switch has been removed on this next generation of XT units and instead has been fixed at approximately 30 seconds. The FanDelayCool feature of this particular power supply when shutdown at full load resulted in the fan speed immediately dropping from 1300 rpm to 1080 rpm and continuing to run for a further 25 seconds. This feature will no doubt extend the life of the power supply but with typical mean time before failure figures of 100,000 hours or 11 years, is it just a gimmick?

Conclusion:

 

Price Per the Watt:

Power Supply Thermaltake Toughpower XT 775W at $154.99= $0.20/Watt (03-2010)

 

The electrical performance of the Thermaltake Toughpower XT 775W with excellent DC voltage regulation from zero to full load, low noise levels and efficiency levels peaking at 88% put it up there with the best. There have been some design changes on the new range of Thermaltake Toughpower XT power supplies and the use of DC to DC converters for the +3V3 and 5V rails have no doubt helped in the production of a power supply that meets 80 Plus Bronze certification. The 80 Plus Org website has it certified at the Silver level at the time of writing this article, so it's either a mistake on their behalf, or Thermaltake made the decision to downgrade it to make sure every unit met the lower Bronze level standard.

Taking a look at the specification table shows 768W (64A) available on the 12V rail - that's almost 100% of the total power supply rating. It's never going to happen in the real world, but it is a sign of a well designed and capable power supply.

Just one or two minor gripes. Electrically it can't be faulted, but it must be said the user manual quality, with one very small section in the English language on a large folded leaflet, is very poor and gives very little technical information. It is quite common to find power supply cable lengths of  approaching 24" on high-end power supplies, but the Thermaltake Toughpower XT 775W cables measure only 20". It's only a small difference, but it's worth bearing in mind if the Thermaltake Toughpower XT 775W is to be installed into some of the larger enthusiast PC enclosures. The cables may be long enough to reach their intended hardware, but will the length be sufficient for that all important cable management?

It's a great power supply that will be more than capable of supplying very stable power to any high-end gaming/overclocking rig with single or dual graphic cards and as an added bonus, its very high efficiency will save a few cents on the electricity bill. There isn't a lot more that can be said about the Thermaltake Toughpower XT 775W power supply, except that it is thoroughly deserving an OCC Gold award, despite some minor niggles.

 

Pros:

 

Cons: