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Pros: Well, I have to mention the first thing that jumped out at me and should matter to you right off the bat as well. Corsair honors a five year warranty with this unit. That tells you right there how much faith they have in the design. Which, after using this unit for a while and inspecting it closely, I can most definitely vouch for the exceptional build quality. Typically budget units like the CX650M have a three year warranty at best, so this speaks volumes in and of itself.
Single-rail design means power distribution isn't something you need to worry about. CWT (Channel Well Technologies) built this unit and they have a really great track record. The work they did with this unit is no different. The "hold up" capacitor is a Nippon Chemi-Con cap, which is great to see in a budget unit like this considering they make some of the best capacitors around. The soldering job also looked neat and well-done, which is typical of CWT's work and on of the many reasons Corsair has used them for so long.
It's also nice to see that polymer capacitors are used in the CX650M as well (although there are some electrolytic caps as well). In the not so distant past, only high-end units used polymer caps, which last MUCH longer than the electrolytic caps that can swell and burst over time. It looks like CWT used polymer caps everywhere that mattered, while using the electrolytic caps in other less important areas just to keep the cost down, which is understandable with a PSU in this price range. The use of polymer caps no doubt contributed to Corsair's decision to honor the five year warranty.
Ripple and efficiency are very good in this unit and put other Bronze certified PSU's to shame. This is no doubt a very reliable design and offers enough connectors for most typical lower to mid-range builds. You can run two GPU's in SLI\Crossfire, assuming of course you choose GPU's that can be sufficiently powered by this unit (which would NOT be the higher-end varieties). Overall this PSU has plenty of connectors, so choosing a single mid to high-end GPU would be the way to go in my opinion here. I just had to note that mutli-GPU is a possibility with the right GPU's.
Packaging was phenomenal as always with Corsair products. Cables are sleeved very well and everything you need is included.
Cons: The sleeve bearing fan is loud. This is to be expected with this type of fan. The fan is just simply not a very good fan in general, although it's adequate to cool this PSU. Just don't expect it to be silent when you're pushing it hard.
Could have definitely used a few more peripheral cables. I could see where some people might get into trouble there. They could have added at least a few more molex connectors at the very least.
The cables aren't quite as long as I would like to see. A lot of cases are big these days so you're gonna need extensions in that scenario. If you have a smaller mid-tower you shouldn't have a problem.
The aesthetics are a bit plain. But I guess one can't expect much from a budget unit in this price class. It's definitely not "ugly," but it's not exactly sleek either.
Overall Review: I wholeheartedly recommend this PSU for anyone that can get by on 650W. It's solid, reliable, and built extremely well. The ONLY reason I decided to take an egg off were for the noise issues and the fact that Corsair used such a bad fan with this unit. It really irked me on what otherwise could have been a perfect budget power supply. That said, this is really not a big problem at all. The fan is good enough to cool the unit and doesn't really get loud unless you are pushing your system. So more of the same here. Just another great PSU from Corsair!
Pros: CORSAIR CX650M is small,and feels solid and will look good and fit in any case that calls for an atx power supply.
Supplied cables are flat & black.
1 long power cable
1 long non modular cpu connector 4+4 pin
1 long non modular 20/24 pin motherboard cable
2 modular cables each with 2 6+2 pin PCI. The inclusion of these cables tells me the Corsair cx650m can crossfire 2 very high end video cards.
1 modular cable with 3 4pin molex and 1 4 pin floppy connector.
It is the shortest cable and i wont be using this for my setup but it is nice to have just in case you have a older system.
1 modular cable with 2 sata
1 modular cable with 4 sata it is about 6 inches longer than the other sata cable ,Great for dvd to multiple hard drives ,this works for me
The single +12V rail can juice 46 amps and 648 watts!
Over-voltage protection,imo the most important, under-voltage protection, short circuit protection, over power protection, and over temperature protection.And a nice 5 year warranty.
The 120mm fan is temperature controlled.And is only audible at full load.
Cons: The only con is all 6 sata connectors are 90 degrees
Overall Review: CORSAIR CX650M is an awesome power supply ,i only feel cool air blowing out of the fan, which is quiet.
And it has already laughed in the face of a lightening strike and no worse than wear.
Of course the true test is how well any power supply holds up and the years, but with a nice 5 year warranty and Corsairs famous support ,there should be no problems.
Thank you Corsair and Newegg for sending this new unit to review.
5 year warranty
Cons: Cables can be hard to work with
Overall Review: I've made do with a 500 watt power supply for years so I'm sure this one will handle my needs just fine. Install was easy, the cables are long enough to reach all of my components.
I'm a huge cable rat and I really don't care for the individual wires being molded together. They're just harder to work with. I prefer individual wires meshed together because you can easily loop and zip tie them. For the price though I can't knock Corsair here.
The fan is large and quiet.
This seems like a decent power supply. Time will tell, but the 5 year warranty helps puts my mind at ease.
Pros: Great packaging, cable treatment, and supplied cable lengths are optimized for mid tower cases. The modular connectors are swappable with other Corsair systems and are very useful for keeping your case clutter free and wires tucked. The Bronze Single rail design works very well and has been rock stable for over a month of steady use. Unlike a couple of reviewers I have not heard from the fan (no whine noise) which is also great. No crazy LED lights in the fan.
Cons: This PSU has a variable vent fan that could cause problems with cases that do not have much air movement. Because the fan cycles between different speeds depending on the load there is a lack of constant are current leaving the case which could result in stagnation of air currents inside your case if not properly rigger with multiple system fans. If you love multicolor LED lights in the fan, this is not the PSU for you.
Overall Review: At $70 you are paying a bit of a premium for this level of power, but in my opinion your are getting what you pay for in terms of component quality and reliability. This PSU is quiet, stable, efficient, well packaged, and has everything you need for a great midlevel to high end GPU (potentially dual GPU) system. I have built over 3 systems with this specific PSU because it just checks all of the boxes that I value.
Pros: Semi-modular design lets you use only the cables you need. This helps make cable management much easier. The CPU power cables are not modular, however.
You get a good assortment of cables in the box. Enough to run a mid-sized gaming rig with a single GPU and a few storage disks.
Everything is included in the box, from mounting screws to cables to zip ties.
5-year warranty from Corsair in case the PSU fails early.
80 Plus certified means that this PSU is only losing 20% of the electricity it consumes to heat. You can get PSUs that are more efficient, but 80 Plus is still a great target.
Variable fan means that it runs slow when not under load, reducing noise and increasing longevity of the device.
Overall Review: Although I haven’t had enough time with this power supply to test its longevity, I’ve had very good luck with Corsair products in the past. I’ve never had any longevity issues with their RAM or PSUs, so I trust their products.
I tested this in my personal PC (Intel i7-6850K, GeForce 1080, and a mix of storage disks). I didn’t have any issue powering my PC with this PSU. However, I don’t feel like it would handle SLI or very many more peripherals – I feel like I’m close to maxing this out with my current build.
Pros: Corsair, long to the game
80 Plus Bronze CONTINUOUS Power
80 Plus Bronze rating means that the PSU is rated for at least 82% efficiency at 20% load, 85% at 50% load, and 82% at 100% load.
Toll Free Phome support
The main capacitor (the only one I could read) is rated to 105c
Thermally controlled fan (keeps it quieter when idle)
Extensive, Useful Corsair Supported and Visited Forum
5 Year Warranty. Not as long as 7 or 10 but still what else comes with a full 5 year warranty?
All cables were long enough to easily connect in my mid tower case
All connectors have firm (not overly tight) grip
The case alignment (case screw holes matching PSU screw holes) is perfect
No cheap psuedo velvet bag
Cons: I noticed that the 24 pin ATX connector had a bit of plastic covering part of the area that plugs to the motherboard.
It was obviously just a bad extrusion job that got by inspectors...can you imagine that as a job...looking at thousands of connectors each day? I once bottled chlorine for a living so I know the mindlessness of such a job.
The over extrusion looked as if it could easily be removed. Using my fingernail I was able to get under the lip. It was at this point the entire end of the pin plug area broke off.
I imagine I could have "made it work" but had no interest in even trying. At the Corsair website I engaged in chat and was told to open a ticket and RMA.
The RMA was somewhat easy. I had to call and let Corsair know that I didn't think it right that I should pay for return of their defective item. I previously sent in a picture of the bad connector. After a short moment on hold the rep came back and told me "as a one time courtesy" they would pay for the return shipping. I mentioned I didn't consider it a "courtesy" but rather an essential requirement. The time from my ship to their return was < two weeks.
When I talked with support and told them that while filling out their RMA form there was no selection available for the CX650M they said.. Huh? But the rep tried it out and verified. I was told it would be fixed
I downloaded the corsair-psu-spec-table-091813.pdf The 091813 designation to means indicates the last update. The CX650M is not on the pdf. One spec caught my eye...Continuous output rated temperature....even though the CX650M is not listed the CX750M is and continous power is listed only up to 30 degress C. That seems low. I doubt the CX650M has a higher spec. but it might.
No doubt budget components(capacitors, safety circuitry, thinner gauge wiring went into this "enthusiast on a budget" PSU.
Not silent, but the noise it does make is not annoying. While in BIOS, in a silent room it is quite audible. AFter Win 8.1 boots I can't hear it.
When gaming (no sound) I can hear the CX650M but still not annoying.
Budget, Plastic Zip ties...hate 'em.
Overall Review: A meaningful non-professional PSU review may seem a daunting task. I'm not going to take the CX650M apart so you can see the insides, I'm not going to waste time writing about how it was packaged and I don't have the gear to measure much of the published specifications. Most of the pro reviews do that and it may be of primary importance to some, just not me.
It was about 15 years ago when I started hanging around the MSI forum. Almost without fail when some guy was having a problem the first question asked by the moderators was along the lines
of "What's your PSU" or "How many Amps on the +12V rail". Before that time it was not generally known by the masses how essential good power is. Now, almost everyone knows, even the guys that don't really know anything, but want to. Go to almost any forum...game or tech...and one of the first "helpful" replies to any question will be asking..."What's your PSU?"
Even more importantly the vendors better understand...if they want to stand out or not be panned... they better make a solid PSU.
Corsair has a long history of being considered a top tier PSU provider but that doesn't mean all their PSU's are top of the line.
In the Corsair 650 Watt category Newegg displays six PSU's ranging in price from $80 for the CX650M to $120 for the RM650i.
This leads to the obvious conclusion that the RM650i has features and components that are better (producing more of the desired effect) then the CX650M. This doesn't mean the CX650M is a bad PSU. It means it is a budget PSU. Which means it has to be evaluated and reviewed for it's designed purpose. Years ago I built a computer for my mother in law. She needed a system to play Solitaire, surf and do e-mail.
If I was to build her a system today this is all the PSU i would require.
If you are considering the CX650M PSU for purchase first you need to decide if it is more PSU or not enough PSU for your system. I recommend you calculate your PSU needs. Newegg has a simple and effective PSU calculator. I suggest you start there. I calculated my need as about 350 watts
I installed the CX650M in my second system: Intel Pentium G3258
MSI H81M-E34 (MS-7817) micro ATX
2 sticks 8 gigs PC3-12800 RAM
MSI Radeon R7 265/HD 7850
1 PCIe WLAN
1 7200 RPM HD
1 DVD burner
3 120mm fans with LED's
Midtower Zalman ZM-Z9 U3 Case (Nice case for a mATX board)
There is no doubt that this qualifies as a budget system. What better way to test a budget PSU? I use the system to evaluate new software and play older games.
All the CX650M voltages were within +/- 5% of the stated voltage. I determined this with my budget PSU tester.
The CX650M is semi-modular, the only cables permanently attached are the 24 pin ATX and the 8 pin ATX12V.
AFter owning full modular PSU's it is hard to be satisfied with semi but everyone needs
the 24 pin and the 8 pin so the only drawback I can see is for cleaning. If you want to take your PSU out of the case you have to detach and unsnake two cables. With full modular - none.
All the other cables are flat, decidedly better then having them sheathed IMO though it is a personal choice. Sheathed cables are ugly and more difficult to manipulate. Flat cables make for a cleaner look. Looking at the CX650M cables I imagine a guy could even split them lengthwise.
The box states "enthusiast on a budget". I am not at all sure just how Corsair defines enthusiast but I am going tp speculate that enthusiasts include gamers I used it everyday for a week to surf and spent several hours playing Far Cry 2, Brutal Doom, Deadspace 2, GTA SA and Doom 3. The system never froze, crashed or shutdown at anytime before, during of after gameplay. I would be hesitant to run much more of a system then I have or more demanding games and feel completely comfortable with the CX650M I would not however SLI or Crossfire this PSU.
I am very pleased with the 24 pin ATX mobo connection and the 4 pin ATX12V. The CX650M connectors are a solid easy fit and snap. Taking it off didn't leave painful depressions in my fingertips. Thank you Corsair, for that.
Corsair terms the CX series as intermediate, I concur and recommend this PSU for light gaming in a budget system.
Pros: Corsair makes a lot of really good products for the computer space, and this is no exception. The PSU (Power Supply) is quiet, energy efficient and has a solid 12v rail, which you need to run modern graphics cards. It has modular cabling and the wires are wrapped in a black mesh that gives everything a very clean look.
Cons: I guess everything could always be cheaper, but this is a good value for what you get.
Overall Review: There are a lot of PSU's out there, so choosing one can be pretty confusing if you aren't familiar with the market. Corsair is a trusted brand and they do a good job putting together a near silent PSU that will last a very long time. They include a generous warranty to give you peace of mind, but currently my oldest Corsair PSU is about 10 years old, running every day, all day long, and I still can't even hear it.
Many people go overboard when buying a PSU, 650Watts is more than enough power for basically everyone. Unless you are running multiple graphics cards in your Desktop you don't need more than this. It won't benefit you at all. In fact, buying a PSU that is too powerful, by too much, can actually HURT your efficiency and create undue strain on the PSU itself. These are very minor, definitively technical concerns, but they are also very real. If you build a standard desktop with a single GPU, even AMD or Nvidia's top of the line GPU, this PSU will be more than enough for your build. A computer like that would idle around 60Watts, and even at load you'd be unlikely to actually exceed 500Watts.
Pros: Solid power supply especially for the price. While the fan is always running and never shuts off, it is barely noticeable. If this will be the only fan (or moving mechanical part) in the system, you will hear it, but it is not bad. The power supply stayed fairly cool and quite during load. The fan is an exhaust fan, so make sure your other fans are intake or that you don't create negative pressure inside the case, else your cooling efficiency will not be good and the fans will work harder (and spin faster).
Modular cables are good in that you have some choice as to the length and number of connections you have on each strand. This helps cable management and inherently air flow. Among the cables included is one for dual graphics cards. While the Newegg specs say NO on SLI, I couldn't find any documentation that says one way or the other except for a specification sheet in an obscure PDF on Corsair's site. This obscure spec sheet says the power supply is 'Muli-GPU' compatible. It includes a modular cable for dual PCI-E power connections and the power ratings for the +12V rail is sufficient for a good amount of configurations (54 amps). So long as both of your graphics cards drain less than 20 amps each, you are probably ok. (I say probably because you need to factor in power for the CPU, HDDs and other peripherals).
The aesthetics are also great. The power supply color scheme is black and gray and all the wires are black. No more little slips of orange, red, yellow, etc. they are all black and wrapped in a sheath.
Installation is about the same for all other power supplies aside from the fact it is modular. It is mounted with the 4 screws in the back and just start plugging.
The modular cables are in a flat ribbon where the wires are stuck together. I like this better than the sheath as they will stay in place a little better and not snag on everything in the case during install.
Cons: The pictures are wrong! The power supply in the box matches the pictures for the most part, but the orientation of the connectors on the PSU for the modular cables is different. My unit says CX650M in all the right places, but the connectors are different, so don't make plans for it. The connectors are all horizontal, none are vertical. The pictures on Newegg, Corsair, and the box are all the same and all wrong.
You are in good hands with the power supply where that was my biggest grievance. Other minor grievances include 2ft long ATX power cable, it doesn't install itself and the pictures were wrong.
Overall Review: It is my opinion that this power supply will work great for cases where the PSU is mounted in the bottom. The attached ATX cable for the motherboard is about 2 feet long. If it is mounted in the top of the tower (like mine is), you will need to cram the extra somewhere out of the way. But if you are in a bottom mount case, you should have plenty of wire to route that thing just about anywhere. Additionally, the SATA power connections will lie flat against the drives if the modular end of it is at the bottom. In my case, the power supply is mounted above and I have to twist the connectors 180 to get them to work for me. Such was the case with all the power supplies I have used, but it sure would be nice if someone were to fix this...
There is also a piece of plastic that blocks part of the fan inside the power supply. I thought this was beyond dumb before realizing it was to help channel the air past heatsinks and through the power supply better.