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  • Coolmax M-500B 500W Eps Power Supply with 5 Sata Connectors ATX12V & EPS12V
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Coolmax M-500B 500W Eps Power Supply with 5 Sata Connectors ATX12V & EPS12V

by Coolmax

List Price: $45.99
Price: $33.50 & FREE Shipping on orders over $35. Details
You Save: $12.49 (27%)
In Stock.
Sold by LLYtech and Fulfilled by Amazon. Gift-wrap available.
  • 120mm fan design, long life, and fastest cooling time
  • Powerful & high-efficiency performance
  • Total silent solution
  • Smart cable management
  • Over/under voltage protection
41 new 1 used from $350.55

Frequently Bought Together

Coolmax M-500B 500W Eps Power Supply with 5 Sata Connectors ATX12V & EPS12V + WD Blue 1 TB Desktop Hard Drive: 3.5 Inch, 7200 RPM, SATA 6 Gb/s, 64 MB Cache - WD10EZEX + Asus 24x DVD-RW Serial-ATA Internal OEM Optical Drive DRW-24B1ST (Black)
Price for all three: $109.17

Buy the selected items together



Technical Details

  • Brand Name: Coolmax
  • Model: 14622

Product Details

  • Product Dimensions: 3.4 x 5.5 x 5.9 inches ; 3.2 pounds
  • Shipping Weight: 3.4 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B0013FIO04
  • Item model number: 14622
  • Average Customer Review: 3.4 out of 5 stars  See all reviews (76 customer reviews)
  • Date first available at Amazon.com: July 25, 2007
  •  Would you like to update product info, give feedback on images, or tell us about a lower price? .


Product Description

Coolmax Technology, Inc M-500B ATX12V & EPS12V Power Supply M-500B Power Supplies

Customer Questions & Answers

Customer Reviews

Buy at your own risk.
Amazon Customer
Either the product description was wrong or I was sent the wrong product.
Charles D. Urban
As soon as I reinstall the old unit, the computer was able to boot.
Peter D. Mar

Most Helpful Customer Reviews

79 of 85 people found the following review helpful By Peter D. Mar on September 30, 2009
Verified Purchase
I've purchased this CoolMax M-500 B power supply at Amazon.com and that this unit works okay on my computer most of the time, although the power rating is somewhat inflated. As compared to a high quality expensive unit, this one is more like a unit rated at 300 W to 350W. Also because it uses a much less sophisticated voltage regulation being group regulated, the cross regulation between different rails nowhere as good as a much more expensive unit. Being an inexpensive unit, it also does claimed have PFC but it doesn't actually have have any. The specification lists a power factor correction of 99% but the actual unit lacks any power factor correction and has a maximum efficiency of up to 70% at peak output. For one thing it does have is an extremely quiet 120mm fan. Overall, some of the faults I have to say about this power supply is the wires a little on the short side for anything but a micro ATX system. Speaking of the wires, even though it wasn't listed in the specification. It does have a single plug for the floppy drive on one of the wire string that has the four pin Molex. Also this unit claimed to have dual virtual rail for the 12 V, but it is actually a single rail. The metal used in the case is somewhat of a thinner gauge than the more expensive quality units. Fortunately being an inexpensive unit, practically all the wires are of 18gauge construction unlike some of the generic brands that may have thinner 20gauge wires.

I purchased this unit to use on my secondary computer that has the Asrock 775i65G motherboard because I do have a better power supply that doesn't work with this motherboard. That power supply is the Antec Truepower Trio 430 W triple rail power supply. I was taking a chance on the purchase of this power supply hoping it will work with this motherboard.
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15 of 15 people found the following review helpful By M. Hibbs on April 3, 2009
I just installed this power supply into a machine to replace an old supply today. Everything seems to be in working order, and the supply is *very* quiet compared to my old one. Running at peak power loads the unit is functioning well.

Two things to note though: 1) There are no small 4-pin hook ups included, which are used to power extra cooling fans (among other low power draws). You can separately buy adapters, or if this is a replacement, you can cannibalize them from the old unit. 2) The PCI-E power cord for a graphics card was pretty short. On my Abit ATX motherboard with an NVidia 8800, the cord is stretched tight to reach the socket. Some case configurations may need an extension for the cord to reach all the way.
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37 of 46 people found the following review helpful By Ten Bosch on March 5, 2009
Verified Purchase
First off, the description of the power supply was very misleading. I am not a tech by any means, but when it said it has 5 SATA connectors, I wasn't sure if it had the standard IDE connectors (the 4 pin periphials) as well. I bought it on faith that no power supply could just have SATA and the gambit paid off. It has plenty of SATA and 4 pins (five of each).

I would like to say that a power supply is just a power supply, but the one I was replacing was a Dynex 500 watt power supply. When I first got it at Best Buy I thought this was awesome, a 500 watt power supply! Two months later I had to replace it because it burnt out. A year later and that one burnt out too...this time with sparks flaring out of the back of my rig. Of course I couldn't find a power supply locally that was 500 watts, so I turned to trusty Amazon.

Right as soon as I opened it you could tell the quality difference. The old one I had could have been manufactured in the 1970's it looked so old with the way they had all the cables in there. The Coolmax had a better casing, and everything inside is neatly tucked. Not one loose cable. I've had it running for a month now, and will update if it needs any, but it's not looking like it.
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5 of 5 people found the following review helpful By Amazon Customer on November 16, 2009
Verified Purchase
Power supply burned out in 1.5 months of use. Amazon will not take it back because it passed their 30 days period so I'm working with the manufacturer(1 year warranty) to get it replaced. Buy at your own risk.
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4 of 4 people found the following review helpful By Cathy R. Myers on September 10, 2009
Verified Purchase
I have had this in 3 days and I can't even hear it and it sure has the power I need for my system which is a HP Pavilion p6110f Has a lot of memory and it needed more power. This one was better than the antec 550watt I tried, more power and quieter. It has only been 3 days so we will see if anything changes I will post it but for now it is a kick butt quiet power supply.
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11 of 14 people found the following review helpful By Amazon Customer on November 4, 2008
Verified Purchase
I has been bought this power supply reference for more than one year and the quality is great, personally I try a nvidia geforce 9800GTX and ATI HD4850 with no problem, even using 3 hard disks , Intel E8400 OC @4ghz and like a 3 fans.

I think this is the best performance/price powersupply for single GPU videocards.
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3 of 3 people found the following review helpful By Duke on September 1, 2010
I bought this to replace the power supply in my old PC, works ok, but I don't use anything under 700w in mine and they gotta have 2 PCIe connectors. I'm a little skeptical about a 500w PS with 4 peripheral AND 4 SATA and a PCIe connector. More convenient ? hmmm just more wires laying around inside the case if you aren't using them and I'm not going to be using 4 peripheral AND 4 SATA are you ?

Any way, I knew what I was getting anyway because I got it cheap. For those of you buying things from AMAZON, they are notorious for not having very good descriptions of products, so instead of getting burned or "taking a chance" LOOK the product up on other sites to not only get a better description but also better images and even opinions.
I continue to see people ordering things on AMAZON, not just PC parts, and having them say the description didn't say this or that. LOOK IT UP AT ANOTHER SITE...LOL
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