Antec TruePower 2.0 430 power supply

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CABLES AND CONNECTORS

There are a total of nine cable sets.

  • 20" sleeved cable for main 20+4-pin ATX connector
  • 20" cable for 4-pin 12V AUX connector
  • 20" cable for 6-pin PCIe connector
  • 2 x 27" cable with two SATA drive connectors
  • 37" cable with three 4-pin IDE drive connectors and one floppy connector
  • 31" cable with two 4-pin IDE drive connectors and one floppy connector
  • 17" cable to carry the fan RPM signal to the motherboard
  • 14" cable with two "FAN ONLY" connectors

There should be no complaints about cable length or the number of connectors; the TruePower 2.0 has everything you would expect from a brand-name retail power supply. About the only thing missing is a second PCIe connector, but this is hardly a surprise. nVidia does not certify a power supply as "SLI Ready" unless it has a capacity of 500W or above. Even so, the TruePower 2.0 430 should have no problem powering an SLI system if an appropriate adapter is used, nVidia's official recommendation notwithstanding.

The "Fan Only" cable is a feature that many people have come to expect from Antec power supplies. The basic idea is to let the fan controller in the power supply control the system fans according to the temperature inside the power supply, which is roughly proportionate to the total amount of heat in the system. The "Fan Only" connectors receive the same voltage as the internal fan, so the voltages that we measure on the test bench will apply to the "Fan Only" connectors as well.

TEST RESULTS

For a fuller understanding of ATX power supplies, please read the reference article Power Supply Fundamentals & Recommended Units. Those who seek source materials can find Intel's various PSU design guides at Form Factors.

For a complete rundown of testing equipment and procedures, please refer to SPCR's PSU Test Platform V.3. The testing system is a close simulation of a moderate airflow mid-tower PC optimized for low noise.

In the test rig, the ambient temperature of the PSU varies proportionately with its output load, which is exactly the way it is in a real PC environment. But there is the added benefit of a high power load tester which allows incremental load testing all the way to full power for any non-industrial PC power supply. Both fan noise and voltage are measured at various standard loads. It is, in general, a very demanding test, as the operating ambient temperature of the PSU often reaches >40°C at full power. This is impossible to achieve with an open test bench setup.

Great effort has been made to devise as realistic an operating environment for the PSU as possible, but the thermal and noise results obtained here still cannot be considered absolute. There are too many variables in PCs and too many possible combinations of components for any single test environment to provide infallible results. And there is always the bugaboo of sample variance. These results are akin to a resume, a few detailed photographs, and some short sound bites of someone you've never met. You'll probably get a pretty good overall representation, but it is not quite the same as an extended meeting in person.

REAL SYSTEM POWER NEEDS: While our testing loads the PSU to full output (even >600W!) in order to verify the manufacturer's claims, real desktop PCs simply do not require anywhere near this level of power. The most pertinent range of DC output power is between about 65W and 250W, because it is the power range where most systems will be working most of the time. To illustrate this point, we conducted system tests to measure the maximum power draw that an actual system can draw under worst-case conditions. Our most powerful Intel 670 (P4-3.8) processor rig with nVidia 6800GT video card drew ~214W DC from the power supply under full load ¬ó well within the capabilities of any modern power supply. Please follow the link provided above to see the details. It is true that very elaborate systems with SLI could draw as much as another 100W, perhaps more, but the total still remains well under 400W in extrapolations of our real world measurements.

SPCR's high fidelity sound recording system was used to create MP3 sound files of this PSU. As with the setup for recording fans, the position of the mic was 3" from the exhaust vent at a 45° angle, outside the airflow turbulence area. The photo below shows the setup (a different PSU is being recorded). All other noise sources in the room were turned off while making the sound recordings.

INTERPRETING TEMPERATURE DATA

It important to keep in mind that fan speed varies with temperature, not output load. A power supply generates more heat as output increases, but is not the only the only factor that affects fan speed. Ambient temperature and case airflow have almost as much effect. Our test rig represents a challenging thermal situation for a power supply: A large portion of the heat generated inside the case must be exhausted through the power supply, which causes a corresponding increase in fan speed.

When examining thermal data, the most important indicator of cooling efficiency is the difference between intake and exhaust. Because the heat generated in the PSU loader by the output of the PSU is always the same for a given power level, the intake temperature should be roughly the same between different tests. The only external variable is the ambient room temperature. The temperature of the exhaust air from the PSU is affected by several factors:

  • Intake temperature (determined by ambient temperature and power output level)
  • Efficiency of the PSU (how much heat it generates while producing the required output)
  • The effectiveness of the PSU cooling system, which is comprised of:
    • Overall mechanical and airflow design
    • Size, shape and overall surface area of heatsinks
    • Fan(s) and fan speed control circuit

The thermal rise in the power supply is really the only indicator we have about all of the above. This is why the intake temperature is important: It represents the ambient temperature around the power supply itself. Subtracting the intake temperature from the exhaust temperature gives a reasonable gauge of the effectiveness of the power supply's cooling system. This is the only temperature number that is comparable between different reviews, as it is unaffected by the ambient temperature.

On to the test results...

Ambient conditions during testing were 20°C and 19 dBA, 121V/60Hz

OUTPUT & EFFICIENCY: Antec TruePower 2.0 430W
DC Output Voltage (V) + Current (A)
Total DC Output
AC Input
Calculated Efficiency
+12V1
+12V2
+5V
+3.3V
-12V
+5VSB
12.04
1.90
12.05
0.00
5.11
1.97
3.35
0.96
0.1
0.2
38.4
66
58.4%
12.04
0.95
12.02
1.71
5.10
3.86
3.35
2.81
0.2
0.3
65.0
98
66.5%
12.01
2.82
12.01
1.71
5.05
3.80
3.33
3.70
0.2
0.4
90.3
127
70.9%
11.99
3.80
11.97
3.27
5.06
7.42
3.31
5.50
0.4
0.7
148.8
195
76.3%
11.98
4.73
11.94
4.93
5.05
9.22
3.29
8.37
0.5
0.9
200.1
262
76.4%
11.95
6.54
11.92
4.93
5.02
12.63
3.31
10.93
0.6
1.2
249.7
330
75.7%
11.93
6.55
11.88
8.03
4.96
15.02
3.28
11.61
0.7
1.4
301.5
403
74.8%
11.89
11.23
11.82
9.53
4.98
21.70
3.23
16.93
1.0
2.0
430.9
600
71.8%

NOTE: The current and voltage for -12V and +5VSB lines is not measured but based on switch settings of the DBS-2100 PS Loader. It is a tiny portion of the total, and potential errors arising from inaccuracies on these lines is <1W.


OTHER DATA SUMMARY: Antec TruePower 2.0 430W
DC Output (W)
38.4
65.0
90.3
148.8
200.1
249.7
301.5
430.9
Intake Temp (°C)
21
22
27
32
36
39
37
38
Exhaust Temp (°C)
30
33
38
45
49
49
51
54
Temp Rise (°C)
9
11
11
13
13
10
14
16
Fan Voltage (V)
4.2
4.2
4.2
4.4
5.5
7.5
9.4
11.1
SPL (dBA@1m)
23
23
23
24
28
36
39
42
Power Factor
0.63
0.65
0.67
0.69
0.71
0.72
0.72
0.73

NOTE: The ambient room temperature during testing can vary a few degrees from review to review. Please take this into account when comparing PSU test data.



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