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Sapphire Pure 1250W Power Supply Review

paulktreg    -   October 29, 2009
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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
Sapphire Pure 1250W
Pass

 

Short Circuit Protection:

I short circuited the 3V3, 5V0 and all six 12V rails in turn. The power supply did shut down and the PowerGuard LED turned red. Once the short was removed and the unit switched off for at least one second, it 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

 

 

Sapphire Pure 1250W
DC Output Voltage Load Regulation
AC Supply = 110V / DC Load = 0W
PSU DC Rail
Measured Voltage(V)
3V3
3.34
5V0
5.11
12V1,12V2,12V3,12V4,12V5,12V6
12.33
-12V
-11.66
5VSB
5.20

 

Sapphire Pure 1250W
DC Output Voltage Load Regulation
110VAC– Total Load at 279W which is 22% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.33
7.54
25.11
3.135 – 3.465
Pass
+5V
5.09
8.79
44.74
4.75 – 5.25
Pass
+12V1
12.30
2.60
31.98
11.4 – 12.6
Pass
+12V2
12.30
2.60
31.98
11.4 – 12.6
Pass
+12V3
12.28
2.59
31.80
11.4 – 12.6
Pass
+12V4
12.28
8.07
99.10
11.4 – 12.6
Pass
+12V5
12.31
0
0
11.4 – 12.6
Pass
+12V6
12.31
0
0
11.4 – 12.6
Pass
-12V
11.83
0.33
3.90
10.8 – 13.2
Pass
+5VSB
5.17
2.09
10.80
4.75 – 5.25
Pass
Total Power Supply Loading
279W
 

 

Sapphire Pure 1250W
DC Output Voltage Load Regulation
110VAC – Total Load at 692W which is 55% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.33
7.44
24.77
3.135 – 3.465
Pass
+5V
5.08
8.84
44.71
4.75 – 5.25
Pass
+12V1
12.28
8.17
100.33
11.4 – 12.6
Pass
+12V2
12.28
2.60
31.93
11.4 – 12.6
Pass
+12V3
12.19
8.08
98.49
11.4 – 12.6
Pass
+12V4
12.26
8.16
100.04
11.4 – 12.6
Pass
+12V5
12.23
11.55
141.26
11.4 – 12.6
Pass
+12V6
12.24
11.10
135.86
11.4 – 12.6
Pass
-12V
11.52
0.33
3.80
10.8 – 13.2
Pass
+5VSB
5.07
2.09
10.60
4.75 – 5.25
Pass
Total Power Supply Loading
692W
 

 

Sapphire Pure 1250W
DC Output Voltage Load Regulation
110VAC– Total Load at 1277W which is 102% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.33
10.73
35.73
3.135 – 3.465
Pass
+5V
5.06
12.93
65.42
4.75 – 5.25
Pass
+12V1
12.21
18.11
221.12
11.4 – 12.6
Pass
+12V2
12.21
18.06
220.51
11.4 – 12.6
Pass
+12V3
12.04
18.33
220.69
11.4 – 12.6
Pass
+12V4
12.19
18.60
226.73
11.4 – 12.6
Pass
+12V5
12.22
11.38
139.06
11.4 – 12.6
Pass
+12V6
12.20
10.92
133.22
11.4 – 12.6
Pass
-12V
11.73
0.34
3.99
10.8 – 13.2
Pass
+5VSB
5.04
2.09
10.53
4.75 – 5.25
Pass
Total Power Supply Loading
1277W
 

 

Mains Input Voltage 230VAC

 

 

Sapphire Pure 1250W
DC Output Voltage Load Regulation
AC Supply = 230V / DC Load = 0W
PSU DC Rail
Measured Voltage(V)
3V3
3.34
5V0
5.11
12V1,12V2,12V3,12V4,12V5,12V6
12.33
-12V
-11.66
5VSB
5.20

 

Sapphire Pure 1250W
DC Output Voltage Load Regulation
230VAC– Total Load at 279W which is 22% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.34
7.64
25.52
3.135 – 3.465
Pass
+5V
5.09
8.62
43.87
4.75 – 5.25
Pass
+12V1
12.30
2.58
31.73
11.4 – 12.6
Pass
+12V2
12.30
2.58
31.73
11.4 – 12.6
Pass
+12V3
12.28
2.57
31.56
11.4 – 12.6
Pass
+12V4
12.28
8.15
100.08
11.4 – 12.6
Pass
+12V5
12.30
0
0
11.4 – 12.6
Pass
+12V6
12.30
0
0
11.4 – 12.6
Pass
-12V
11.90
0.33
3.92
10.8 – 13.2
Pass
+5VSB
5.10
2.09
10.66
4.75 – 5.25
Pass
Total Power Supply Loading
279W
 

 

Sapphire Pure 1250W
DC Output Voltage Load Regulation
230VAC – Total Load at 690W which is 55% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.33
7.44
24.77
3.135 – 3.465
Pass
+5V
5.09
8.77
44.64
4.75 – 5.25
Pass
+12V1
12.28
8.18
100.45
11.4 – 12.6
Pass
+12V2
12.28
2.60
31.93
11.4 – 12.6
Pass
+12V3
12.22
8.07
98.61
11.4 – 12.6
Pass
+12V4
12.26
8.05
98.69
11.4 – 12.6
Pass
+12V5
12.23
11.56
141.38
11.4 – 12.6
Pass
+12V6
12.22
11.08
135.40
11.4 – 12.6
Pass
-12V
11.52
0.33
3.80
10.8 – 13.2
Pass
+5VSB
5.07
2.09
10.60
4.75 – 5.25
Pass
Total Power Supply Loading
690W
 

 

Sapphire Pure 1250W
DC Output Voltage Load Regulation
230VAC – Total Load at 1278W which is 102% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.33
11.17
37.20
3.135 – 3.465
Pass
+5V
5.06
12.63
63.91
4.75 – 5.25
Pass
+12V1
12.21
18.48
225.64
11.4 – 12.6
Pass
+12V2
12.21
18.10
221.00
11.4 – 12.6
Pass
+12V3
12.03
17.95
215.93
11.4 – 12.6
Pass
+12V4
12.19
18.18
221.61
11.4 – 12.6
Pass
+12V5
12.21
11.60
141.64
11.4 – 12.6
Pass
+12V6
12.22
11.18
136.62
11.4 – 12.6
Pass
-12V
11.73
0.34
3.99
10.8 – 13.2
Pass
+5VSB
5.04
2.09
10.53
4.75 – 5.25
Pass
Total Power Supply Loading
1278W
 

 

No problems here. The Sapphire Pure 1250W produced an excellent set of results in this section. All the rails held up well within the limits set down by the ATX12V V2.2 specification from zero, to a slight overload of 1278W.

 




  1. Introduction & Closer Look
  2. Closer Look (The Power Supply)
  3. Specification & Features
  4. Testing: DC Voltage Load Regulation At 110VAC & 230VAC
  5. Testing: Efficiency, Power Factor & DC Quality
  6. Testing: Temperature, Noise Level & Fan Speed
  7. Conclusion
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