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Corsair TX550M & TX750M Power Supply Review

paulktreg    -   February 21, 2012
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Testing:

TX750M - Mains Input Voltage 110VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corsair TX750M 750W (CMPSU-750TXM) DC Output Voltage Load Regulation
Supply = 116VAC/50Hz
PSU DC Rail
Rail Loading
Measured Voltage
Permitted Regulation
Actual Regulation
+3.3V
0
3.35V
3.3V±5%
+1.5%
+5V
0
5.09V
5.0V±5%
+1.8%
+12V
0
12.13V
12.0V±5%
+1.1%
-12V
0
11.90V
12.0V±10%
-0.8%
+5VSB
0
5.09V
5.0V±5%
+1.8%
Total PSU DC Loading = 0W (0% of Rated Maximum Output Power)

 

Corsair TX750M 750W (CMPSU-750TXM) DC Output Voltage Load Regulation
Supply = 116VAC/50Hz
PSU DC Rail
Rail Loading
Measured Voltage
Permitted Regulation
Actual Regulation
+3.3V
3.17A
3.33V
3.3V±5%
+0.9%
+5V
4.82A
5.06V
5.0V±5%
+1.2%
+12V
10.18A
12.10V
12.0V±5%
+0.8%
-12V
0.35A
11.85V
12.0V±10%
-1.3%
+5VSB
2.12A
4.88V
5.0V±5%
-2.4%
Total PSU DC Loading = 173W (23% of Rated Maximum Output Power)

 

Corsair TX750M 750W (CMPSU-750TXM) DC Output Voltage Load Regulation
Supply = 113VAC/50Hz
PSU DC Rail
Rail Loading
Measured Voltage
Permitted Regulation
Actual Regulation
+3.3V
8.19A
3.31V
3.3V±5%
+0.3%
+5V
9.57A
5.01V
5.0V±5%
+0.2%
+12V
23.68A
12.03V
12.0V±5%
+0.3%
-12V
0.35A
12.03V
12.0V±10%
+0.3%
+5VSB
2.00A
4.89V
5.0V±5%
-2.2%
Total PSU DC Loading = 374W (50% of Rated Maximum Output Power)

 

Corsair TX750M 750W (CMPSU-750TXM) DC Output Voltage Load Regulation
Supply = 110VAC/50Hz
PSU DC Rail
Rail Loading
Measured Voltage
Permitted Regulation
Actual Regulation
+3.3V
13.04A
3.28V
3.3V±5%
-0.6%
+5V
14.89A
4.95V
5.0V±5%
-1.0%
+12V
49.02A
11.95V
12.0V±5%
-0.4%
-12V
0.36A
12.28V
12.0V±10%
+2.3%
+5VSB
2.02A
4.82V
5.0V±5%
-3.6%
Total PSU DC Loading = 716W (95% of Rated Maximum Output Power)

 

TX750M - Mains Input Voltage 230VAC

 

 

Corsair TX750M 750W (CMPSU-750TXM) DC Output Voltage Load Regulation
Supply = 244VAC/50Hz
PSU DC Rail
Rail Loading
Measured Voltage
Permitted Regulation
Actual Regulation
+3.3V
0
3.35V
3.3V±5%
+1.5%
+5V
0
5.09V
5.0V±5%
+1.8%
+12V
0
12.14V
12.0V±5%
+1.2%
-12V
0
11.90V
12.0V±10%
-0.8%
+5VSB
0
5.09V
5.0V±5%
+1.8%
Total PSU DC Loading = 0W (0% of Rated Maximum Output Power)

 

Corsair TX750M 750W (CMPSU-750TXM) DC Output Voltage Load Regulation
Supply = 244VAC/50Hz
PSU DC Rail
Rail Loading
Measured Voltage
Permitted Regulation
Actual Regulation
+3.3V
3.17A
3.33V
3.3V±5%
+0.9%
+5V
4.80A
5.06V
5.0V±5%
+1.2%
+12V
10.07A
12.09V
12.0V±5%
+0.8%
-12V
0.35A
11.84V
12.0V±10%
-1.3%
+5VSB
2.12A
4.89V
5.0V±5%
-2.2%
Total PSU DC Loading = 171W (23% of Rated Maximum Output Power)

 

Corsair TX750M 750W (CMPSU-750TXM) DC Output Voltage Load Regulation
Supply = 243VAC/50Hz
PSU DC Rail
Rail Loading
Measured Voltage
Permitted Regulation
Actual Regulation
+3.3V
7.91A
3.30V
3.3V±5%
0
+5V
9.52A
5.01V
5.0V±5%
+0.2%
+12V
23.76A
12.04V
12.0V±5%
+0.3%
-12V
0.35A
12.00V
12.0V±10%
0
+5VSB
1.99A
4.84V
5.0V±5%
-3.2%
Total PSU DC Loading = 374W (50% of Rated Maximum Output Power)

 

Corsair TX750M 750W (CMPSU-750TXM) DC Output Voltage Load Regulation
Supply = 238VAC/50Hz
PSU DC Rail
Rail Loading
Measured Voltage
Permitted Regulation
Actual Regulation
+3.3V
13.05A
3.27V
3.3V±5%
-0.9%
+5V
14.85A
4.95V
5.0V±5%
-1.0%
+12V
49.05A
11.96V
12.0V±5%
-0.3%
-12V
0.37A
12.31V
12.0V±10%
+2.6%
+5VSB
2.02A
4.83V
5.0V±5%
-3.4%
Total PSU DC Loading = 717W (96% of Rated Maximum Output Power)

 

The Corsair TX750M produced a set of results that are better than that of the TX550M in this section, with the three main rails of the former staying well within the limits set down by the ATX12V specification and a worst case regulation of +1.8% on the +5V rail.




  1. Introduction & Closer Look
  2. Closer Look (The Power Supply)
  3. Specification & Features
  4. Testing: DC Voltage Load Regulation
  5. Testing: DC Voltage Load Regulation (Cont.)
  6. Testing: Efficiency, Power Factor
  7. Testing: DC Quality
  8. Testing: Temperature, Noise Level & Fan Speed
  9. Conclusion: TX550M
  10. Conclusion: TX750M
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