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Cooler Master 650W Real Power Pro


Author:  Jason Dumbaugh
Date:  2007.06.25
Topic:  Peripherals
Provider:  Cooler Master
Manufacturer:  Cooler Master







Cooler Master 650W Real Power Pro PSU

 

Cooler Master Cooler Master Compatibility nVidia SLI Ready

Cooler Master 650W

For years, Cooler Master has been a trusted manufacturer of excellent quality cases, fans, and power supplies. This image has proven true with their new 650W Real Power Pro, which promises "bead core protection from PCI-e connectors, worry-free power failure detector and an over 80% efficiency rating." Whether it's the gloss black finish, the totally vented back, the overload indicator LED, or the Chrome Cooler Master logo on the fan, this is clearly a beautiful power supply. I might add I was impressed with the professionalism expressed in the box it came in as well. I almost didn't want to open it because I stared at the box for a good 20 minutes. This review will cover the packaging, specifications, and power statistics of the Cooler Master Real Power Pro 650W ATX power supply.

 

Cooler Master 650W rear
Cooler Master 650W side
Cooler Master 650W top
Rear view
Side View
Top View

 

Packaging:

Packaging Cooler Master 650W

Packaging Cooler Master 650W
Packaging Cooler Master 650W
Packaging Cooler Master 650W

 

Connectors:

The Real Power Pro 650W comes with:
1 x 24-pin power connector
1 x 4-pin CPU power connector
1 x 8-pin P3 connector
2 x 6-pin PCI-E connectors
6 x Molex power connectors
6 x SATA power connectors
Cooler Master 650W connectors

Features:

(from coolermaster.com)
1.Eco-design for energy and money saving by Active PFC. (>0.99) / High Efficiency (>80%)
2.Ultra-silent operation with intelligent 120mm fan speed controller makes superb heat dissipation at low noise (17 dBA)
3.Compliance with the newest Intel standard ATX 12V V 2.2
4.Compliance with the newest SSI standard EPS 12V V2.91
5.PCI-e connector with bead core protection to minimize EMI for reducing noises.
6.Worry-free Power Failure Detector will light up when Over-Voltage, Under-Voltage, Over-Temperature, Over-Current, Over-Loading, and Short circuit occur.
7. Three Year Warranty

 

Comparison to other Cooler Master Models:
(note: all are SLI ready and have 120mm fans)

Cooler Master 650W comparison chart
(click to enlarge)

 

Specifications:

Model RS-650-ACAA-A1
Type ATX Form Factor 12V V2.2 / SSI Standard EPS 12V V2.91
Dimension (W / H / D) ATX Form Factor 12V V2.2 / SSI Standard EPS 12V V2.91
Input Voltage 90~264V (Auto Range)
Input Current 10A @ 115 Vac / 5A @ 230 Vac
Input Frequency Range 47~63 Hz
PFC Active PFC (0.99)
Power Good Signal 100~500 ms
Hold Up Time >17ms
Efficiency >80% Typically
MTBF >100,000 hrs
Protection OVP / UVP / OTP / OCP / OLP / OPP / SCP
Output Capacity 650 Watts Continuous
Max. Output Capacity 780 Watts
Operation Temperature 0~40℃ (Normal Input Voltage)
Fan 120 mm fan with intelligent speed controller
Safety Nemko / TUV / cUL / CE / BSMI / FCC / CCC
Certification nVIDIA SLI

Thermal Design:

The Real Power Pro 650 uses a single 120mm fan which proved to not only cool the power supply well but also run nearly silent.

Cooler Master has really put a lot of thought into the cooling and layout of this power supply which includes a thermo couple which senses heatsink temperature and dynamically throttles the fan to compensate for heat. We checked the PSU several times and as we mentioned it not only ran cool but also dead silent.


Cooler Master 650W

AC INPUT
115/230V ~ 10/5A 60/50Hz
DC OUTPUT
+3.3V
+5V
+12V
+12V
+12V
-12V
+5V
MAX LOAD (A)
25
25
19
19
19
0.8
3.5
MAX POWER
191W
540W
9.6W
17.5W
650W

 

Testing Voltages:

We used a machine with a relatively high power draw to test this power supply. Our machine was configured as follows:

Dual Socket Dual Core Opteron 2220
4GB DDR2 ECC Ram
SAS Cannister Array with 6 Seagate Drives in a Raid 0
Western Digital 74GB Raptor SATA Drive
Tyan S2927 Motherboard
EVGA 7900GS Video Card

As you can see this configuration would not be kind to most power supplies. Does drawing this much current bring down the 650 Real Power Pro? Did the power requirements cause ripples in current or unsteady voltages? Judge for yourself.

Molex:


Boot-up
12.04V
Idle
12.09V
Shut-down
12.13V

Although the shut down voltage was a bit high, it's still not high enough to worry about. Had it been 12.25V or so, we would have worried. The power supply was completely solid once booted into windows, and didn't even flinch when we torture tested it in Prime95 on a dual-core, dual socket AMD Opteron server. The 650 Real Power Pro from Cooler Master performed almost flawlessly under strenuous power draw for more than 24 hours without any issues and remained cool the entire time.

Wall Voltages:

testing voltages Cooler Master 650W PSU testing voltages Cooler Master 650W PSU testing voltages Cooler Master 650W PSU
0.98A
115W
119VA

testing voltages Cooler Master 650W PSU testing voltages Cooler Master 650W PSU
59.9Hz
0.96PF

 

Pros/Cons:

Pros:
Ultra silent fan
constant high power output
overload indicators
many different connectors
great price

Cons:
hard to find (the 850W is available everywhere)

 

Conclusion:

The Cooler Master Real Power Pro 650W is a fantastic Power Supply for the money. If you can find one, get it. The 850W is available almost everywhere I've checked for an MSRP of $250. This is definitely one of the most impressive power supplies I've seen, and would recommend it to anyone.

 



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