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GlacialPower GP-PS550BP Power Supply
The folks at GlacialPower have sent us one of their 550 Watt PSU's- the GL-PS550BP Power Supply. We tossed it into a case immediately. Glacial Power is a very new company which was formed in April of 2006 by a team of engineers from the Switch Mode Power Supply industry. This means that power supplis are their specialty which is great as thats what we will be testing today.
What's in the box?
A Closer Look:
The PS550BP has large venting on the back so it does not overheat. The 24-pin connector is wrapped for optimized wires.
Specifications (from Glacialpower.com):
Parameter |
Min. |
Nom. |
Max. |
| Vin (115 Vac) | 100 Vrms | 115 Vrms | 135 Vrms |
| Vin (230 Vac) | 200 Vrms | 230 Vrms | 264 Vrms |
| Vin Frequency | 47Hz | 50 / 60 Hz | 63Hz |
Output |
Tolerance |
Min. |
Nom. |
Max. |
Unit |
| +5V | +/- 5% | +4.75 | +5.00 | +5.25 | Volts |
| +3.3V | +/- 5% | +3.14 | +3.30 | +3.47 | Volts |
| +12V1 | +/- 5% | +11.40 | +1.200 | +12.60 | Volts |
| +12V2 | +/- 5% | +11.40 | +12.00 | +12.60 | Volts |
| -12V | +/- 10% | -10.80 | -12.00 | -13.20 | Volts |
| +5Vsb | +/- 5% | +4.75 | +5.00 | +5.25 | Volts |
| DC OutPut | +5V |
+3.3V |
+12V1 |
+12V2 |
-12V |
+5Vsb |
| Nominal Output Voltage (V) | 5 |
3.3 |
12 |
12 |
-12 |
5 |
| Min. Current (A) | 0.3 |
0.3 |
0.5 |
0.5 |
0 |
0 |
| Max. Current (A) | 25 |
25 |
18 |
18 |
0.6 |
3 |
| Peak Current (A) | 19 |
19 |
3.5 |
|||
| Max. Power (W) | 125 |
82.5 |
216 |
216 |
7.2 |
15 |
| Combined Max. Power (W) | 130 |
400 |
7.2 |
15 |
||
| Total Max. Output Power (W) |
550
|
|||||
Output |
Min. |
Nom. |
Max. |
Unit |
| +3.3 Vdc | 3.7 | 4.2 | 4.3 | Volts |
| +5 Vdc | 5.7 | 6.3 | 7.0 | Volts |
| +12 Vdc | 13.4 | 15.0 | 15.6 | Volts |
| -12 Vdc | -14.0 | -14.5 | -15.5 | Volts |
Operating Temperature
0 ~ 45 °C
Safety (Compliance With)
UL 60950 3rd Edition – CAN / CSA - C22.2 - 60950 - 00.
EN60 950 3rd Edition
IEC60 950 3rd Edition (CB Report to include all national deviations)
EU Low Voltage Directive (73 / 23 / EEC) (CE Compliance)
GB4943-90 CCIB (China)
As you can see Glacial Power claims only a +/- 10% on the 12v line while a +/-5% on all other rails. Our results will show if this holds true.
Testing:
We tested the power supply by plugging our RadioShack multimeter into the 12V molex connectors. We then started the computer, stressed the computer, restarted the computer, and shut down the computer. The same test was then performed with the 5V connectors.
Boot |
11.98V - 12.02V |
5.13V - 5.14V |
Idle |
12.01V |
5.13V |
Stress |
12.00V |
5.13V - 5.14V |
Shut Down |
11.98V - 12.02V |
5.13V - 5.14V |
Reboot |
11.98V - 12.02V |
5.13V - 5.14V |
We were amazed at how steady the voltages were! We tested this power supply in one of our fastest and most demanding computers, stressed it using Prime95, and it held a solid 12.00V without flinching! We are very happy with the stability of the voltages on these rails.
Conclusion:
The GlacialPower GP-PS550BP Power supply is one of the best performing power supplies we've seen. The power switch on the PSU did have problems staying in the off position which could be a big problem for some users. Additionally we would like to see more connectors ,however, we didn't need any more than was provided. Some users with several hard drives and two video cards could find themselves suddenly in need of a few power splitters which really is not a very big deal compared to the testing results. We are happy to reccomend this product.
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