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- Date:
- Wednesday, November 07, 2007
- Author:
- Paul Johnson
- Editor:
- Kyle Bennett
- Google +1
Cooler Master Real Power Pro 1250w Power Supply
Cooler Master serves us up 1250 watts of power today with a new computer power supply that is sporting six +12v rails and enough 6-pin and 8-pin PCIe power connectors to handle up to three video cards. All with a 5 year warranty.
Build Quality
As we already know the Cooler Master Real Power Pro 1250w features a single 135mm fan design that has come to be one of the preferred standards for quiet cooling environments due to the ability to move a larger volume of air at slower speeds than a smaller diameter fan. While great for quiet computing environments the key criteria in our evaluation is whether or not the cooling solution is sufficient, not necessary it’s sound level or form factor.
External Build Quality
The external build quality of the Cooler Master Real Power Pro 1250w is uniformly very good. The exterior is trimmed out in a black reflective finish that is very popular lately and shows off well in a case with a window so users can see that sort of thing. The unit’s rear is sparse with only the AC receptacle, the unit’s “full range” sticker covering the receptacle, and the LED for the Worry Free Power Failure detector. On the front side of the Real Power Pro the cables lack a wire guard and are secured to the side of the power supply housing with a zip tie like we saw in a couple of other units now including the Real Power Pro 750w. Other than those features the unit is very basic having just the single 135mm fan covered by a screw down wire fan guard.
The cables provide a very long serviceable length of ~25 inches to the first (or only) connector and are sheathed in black mesh. The sheathing on these cables is better than seen on most power supplies and extends the full length of each cable as opposed to just to the first or only connector which is all too common. These cables should allow a user to route and hide cables as they see fit even in large cases which is good given the number of cables included! Overall the external build of the unit looks good except for the zip tying off of the cables to the housing and lack of wire guard. Why companies continue to not use a wire guard is a bit perplexing.
Internal Build Quality
Once the screws securing the fan housing are removed we are left thinking we are suffering from a bit of double vision. The Cooler Master Real Power Pro 1250w isn’t a feather weight power supply which is readily apparent when you unbox it, but once you open the unit it becomes clear that in order to generate those 1250 watts of power Enhance has packed a lot of items into this unit. Instead of being a single transformer design the Cooler Master Real Power Pro 1250w utilizes a dual 12v transformer design like we recently saw in the ABS/Tagan ITZ1300w. In addition we see almost all available surface area covered in heatsinks in order to move the heat into the air stream generated by the overhead 135mm fan that is provided by Young Lin Tech and is rated at 0.25A at 12v. On a side the note the quality of the machine work on the heatsinks for this unit is absolutely superb.
As we swing over to the primary side we that the unit features a pair of primary capacitors even though the unit is an APFC design. This pair of capacitors come courtesy of Nippon Chemi-Con and are rated at 400v 390uF each. Also note the layering of heatsinks on the primary side with various primary side components (like the rectifying bridge) receiving their own heatsink and the huge toroid coil next to the primary capacitors. This is one of the largest seen to date in a power supply in our reviews though it still does trail the monster seen in the Ultra X3 1600w.
On the secondary side we see the Real Power Pro 1250w is populated by a veritable grab bag of capacitors including Teapo, Su’scon, and one I can’t place (though its condenser label indicates "MC"). Also from the secondary side perspective we can see the small PCB that houses the majority of the input filtering components right above the AC receptacle. Finally, we see the solder points for the 12v rails and the fan controller all housed here on the secondary.
Like the last Cooler Master unit we saw this unit has its interesting points and counterpoints. While the unit features Nippon Chemi-Con capacitors on the primary side it fills the secondary side with Su’scon, Teapo, and an unidentified make. The unit does have very long and useful cables that are well sheathed but it doesn’t have a wire guard. The one area though that is hard to fault the unit on at all is the pairing of heatsinks with fan. If any combination can handle a 1250w power supply the absolute massive heatsinks provided here today along with the 135mm fan should do the trick.