Welcome Stranger to OCC!Login | Register

XFX XPS-850W Power Supply Review

paulktreg    -   September 14, 2009
» Discuss this article (9)

Lowest Prices

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
XFX Black Edition 850W
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

 

 

XFX Black Edition 850W
DC Output Voltage Load Regulation
AC Supply = 110V / DC Load = 0W
PSU DC Rail
Measured Voltage(V)
3V3
3.40
5V0
5.15
+12V
12.22
-12V
-12.00
5VSB
5.03

 

XFX Black Edition 850W
DC Output Voltage Load Regulation
110VAC - Total Load at 175W which is 21% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.38
3.22
10.88
3.135 – 3.465
Pass
+5V
5.14
4.59
23.59
4.75 – 5.25
Pass
+12V
12.21
10.30
125.76
11.4 – 12.6
Pass
-12V
11.90
0.35
4.16
10.8 – 13.2
Pass
+5VSB
4.94
2.06
10.18
4.75 – 5.25
Pass
Total Power Supply Loading
175W
 

 

XFX Black Edition 850W
DC Output Voltage Load Regulation
110VAC - Total Load at 419W which is 49% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.37
8.36
28.17
3.135 – 3.465
Pass
+5V
5.14
8.88
45.64
4.75 – 5.25
Pass
+12V
12.19
27.13
330.71
11.4 – 12.6
Pass
-12V
12.06
0.35
4.22
10.8 – 13.2
Pass
+5VSB
4.94
2.06
10.18
4.75 – 5.25
Pass
Total Power Supply Loading
419W
 

 

XFX Black Edition 850W
DC Output Voltage Load Regulation
110VAC - Total Load at 830W which is 98% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.36
12.96
43.55
3.135 – 3.465
Pass
+5V
5.13
13.20
67.72
4.75 – 5.25
Pass
+12V
12.17
57.82
703.67
11.4 – 12.6
Pass
-12V
12.28
0.36
4.42
10.8 – 13.2
Pass
+5VSB
4.93
2.06
10.16
4.75 – 5.25
Pass
Total Power Supply Loading
830W
 

 

Mains Input Voltage 230VAC

 

 

XFX Black Edition 850W
DC Output Voltage Load Regulation
AC Supply = 230V / DC Load = 0W
PSU DC Rail
Measured Voltage(V)
3V3
3.40
5V0
5.15
+12V
12.21
-12V
-12.00
5VSB
5.03

 

XFX Black Edition 850W
DC Output Voltage Load Regulation
230VAC - Total Load at 174W which is 20% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.37
3.20
10.78
3.135 – 3.465
Pass
+5V
5.13
4.63
23.75
4.75 – 5.25
Pass
+12V
12.20
10.29
125.53
11.4 – 12.6
Pass
-12V
11.91
0.35
4.17
10.8 – 13.2
Pass
+5VSB
4.94
2.06
10.18
4.75 – 5.25
Pass
Total Power Supply Loading
174W
 

 

XFX Black Edition 850W
DC Output Voltage Load Regulation
230VAC - Total Load at 420W which is 49% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.37
8.37
28.21
3.135 – 3.465
Pass
+5V
5.15
9.15
47.12
4.75 – 5.25
Pass
+12V
12.20
27.09
330.50
11.4 – 12.6
Pass
-12V
12.06
0.35
4.22
10.8 – 13.2
Pass
+5VSB
4.94
2.06
10.18
4.75 – 5.25
Pass
Total Power Supply Loading
420W
 

 

XFX Black Edition 850W
DC Output Voltage Load Regulation
230VAC - Total Load at 830W which is 98% of Rated Maximum Output Power
PSU
DC Rail
Measured
Voltage(V)
Measured
Current (A)
Load Power
(W)
ATX12V V Limits
(V)
Pass/Fail
+3V3
3.36
12.84
43.14
3.135 – 3.465
Pass
+5V
5.14
12.89
66.25
4.75 – 5.25
Pass
+12V
12.18
57.99
706.32
11.4 – 12.6
Pass
-12V
12.27
0.36
4.42
10.8 – 13.2
Pass
+5VSB
4.92
2.06
10.13
4.75 – 5.25
Pass
Total Power Supply Loading
830W
 

 

The XFX Black Edition 850W power supply gave an excellent set of results for DC voltage load regulation. The rail voltages are all slightly elevated, but still within the ATX12V V2.2 specification. What was most impressive was a drop of only 0.03~0.05V on the 12V rail as the load went from zero to almost 60A. No problems here, so let's move on.

 




  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
Random Pic
© 2001-2014 Overclockers Club ® Privacy Policy

Also part of our network: TalkAndroid, Android Forum, iPhone Informer, Neoseeker, and Used Audio Classifieds

Elapsed: 0.0287158489