Limited time offer, ends 08/20 By Tcvnd
Make informed decisions with expert advice. Learn More
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.
Pros: - Plenty of power for my PC rig, which has several SSDs, 7200 RPM drives, a GTX Titan, i7 5960X, and 64 GB RAM.
- Modular enough to keep the inside of my case organized and clutter-free.
- Quiet enough that I don't notice it under normal working circumstances.
Cons: - None so far
Overall Review: - Lots of bad reviews here...not sure if Corsair sent out a bad batch, or the earlier year revisions were problematic? I have the 2017 revision and it's been fine.
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: I left this power supply on 24/7 for the last month running a server with moderate amounts of traffic and it although I wouldn't recommend doing this, this power supply had no issues at all. A server however doesn't tax the power supply's full wattage so I played a few games. It got a little loud but nothing I would say was abnormal and the best thing was the games played flawless.
Cons: none - worked better than expected.
Overall Review: I really don't have anything negative to say so far about this power supply because it has performed well. I will say that I paid over 220.00 for one of the best power supplies at 750W and it failed after 2 and a half years. It was very disappointing and it was not a Corsair. I have owned many Corsair products and they are an excellent company to work with should you have any issue. I had to send back RAM twice to Corsair because of bad batches of RAM and both times it was painless and effortless honestly. That RAM is still running to this day. Corsair is a great company and this power supply is definitely a steal at this price for 650W.
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: I tested the CORSAIR CX-M series CX750M, 750W, 80 PLUS BRONZE, Intel Haswell Ready ATX12V & EPS12V semi-modular power supply.
Here are the vital specs:
+ Form Factor: ATX12V / EPS12V
+ 750 Watt Maximum Output
+ Active Power Factor Correction
+ Semi-Modular Power Cables
+ Single Rail +12VDC Design
+ 80PLUS “Bronze” Certified
+ Efficiency: 85%
+ Outputs: +3.3V@25A, +5V@25A, +12V@62A, -12V@0.8A, +5VSB@3A
+ MTBF: 100,000 hours
+ Warranty: 5 Years
Lets go over some of the more important specs: The ATX/EPS12V is the form factor or type of power supply (PS). This defines the type of system case it will physically fit into.
The 750 Watt rating is the maximum power output, including all of the outputs summed together. I try to avoid power supplies with dual 12VDC rails with ratings of less than 650 Watts. The reason is they generally don’t have enough current on either 12V rail to properly drive even a single mid-range graphics card. Look to a 750W, or larger single-rail unit like this PS for: dual graphics applications, low-end workstations, or for moderate gaming use.
Active Power Factor (A-PFC) correction helps to keep your utility company happy and to reduce your annual electric costs. The ideal PF is a ratio of 1.0. Anything below that is considered inductive and anything above is appearing capacitive to the utility company’s equipment. A power supply that maintains the desired PF ratio of 1.0 appears to be a resistive load for all intents and purposes to the utility company. Power supplies rated more than 75 Watts have to include PFC to be sold in Europe. Most power supply manufacturers now include PFC as a standard feature, so they can sell into any worldwide market.
This PS has semi-modular output cables. This means the ATX motherboard cables are not detachable, while the: graphics, SATA and Molex DC output power cables are all detachable. Two of each detachable cable type were included with the PS. The motherboard cables had webbing, whereas the DC output cables did not. Modular PS normally provide for a neater cable layout.
80PLUS, White, Bronze, Silver, Gold, Platinum, and Titanium ratings? This is all part of a trade-marked 80PLUS voluntary industry standard created by Ecos Consulting and the EPRI in 2004, with pressure from the EPA and other Eco organizations. It refers to power supplies that have an 80% efficiency rating or higher. The white, bronze, silver, gold, Etc, was created by several large PS resellers to act as a buyers guide for consumers and IT-people when purchasing computer/server PS. An 85% efficient PS wastes less than 15% of the energy it consumes as waste heat. Note the bronze, silver, gold, Etc, has nothing to do with the quality or construction of a PS. A gold PS can use poor quality parts and have bad solder joints, or be made using a cheap PCB material, as long has it holds together long enough to pass the gold efficiency industry test standards.
White power supplies just meet the minimum 80PLUS efficiency standard. Bronze units are generally 82-85% efficient, silver 85-88% Eff, gold 89 to 92% Eff. Platinum are in the 90-94% efficiency range. Titanium supplies are always more than 90% efficient and are designed for data center servers and are seldom seen in consumer grade equipment. Keep in mind these are just approximate efficiency ratings for each color range. The actual efficiency can vary based on the input voltage and the output loading. This power supply is rated 85% efficient, which is excellent for a bronze PS.
This Corsair PS is notable for its 5-year warranty in this price/power range. This is a rare find on a budget power supply. This generally shows the manufacturer has a lot of confidence in the quality of their product.
I also like the larger 140mm fan and the black wire finger guard mounted over it. Stamped finger guards used on lower quality PS tend to restrict airflow through the fan and can cause more fan noise, due to increased airflow turbulence.
Cons: All of the modular DC output cables included with this PS were black colored flat cables. Given the modest cost of this PS, this was probably one of the cost cutting features made to hold the unit’s cost down. Personally I prefer to spend a little more and get a gold PS with color-coded, web covered, DC output cables. I am also not a big fan of modular PS. The additional connection points needed where the DC output cables plug into the PS are another possible point of failure. They also create more voltage drop. Sorry but soldered output cables are more reliable in my experience as a system builder and suffer less voltage drop.
While this is not a con, I would like to see PS manufacturers list whether their SATA power plugs have the keys orientated left or right handed. This unit had LH keys which means its better suited to a bottom mount tower case. A PS with RH power keys works best when located in a top mount tower case. In the latter situation the wires dangle down from the top, so you want the SATA keys to be on the near side, to easily align with the optical drives and hard drives. Otherwise the builder is faced with a twisted wiring mess of cables, which is the antipathy of a neat build. Rounded output wires are also more flexible and easier to install.
I always look at the reviews posted on NewEgg before I purchase a new product. This PS had 430 reviews when I looked it up, which means its been around for awhile, with a lot of units sold. It had an overall 3-egg rating. After reading reviews posted over the past six months though, I’m concerned about the early and high failure rates reviewers are experiencing with the current production. I would only use this PS in a budget system where the end-user is trying to keep the overall system cost down and wants a modular PS. I would also keep in mind that people who normally would not bother to review a product, will be more motivated when they have a problem with it. So this can quickly skew the overall review ratings in a negative direction. In my personal experience of building PCs since the late eighties; Corsair generally has very high quality, reliable PS. The 5-year warranty does offer potential buyers some added purchase protection.
Overall Review: I will let you all in on a big secret, the warranty period is generally the key to the build quality of any given power supply. Price, eh not so much. Avoid PS with one-year or less warranties, they are mostly junk. The length of the warranty is the best guide to the seller’s confidence in the quality of their product. There are always exceptions to any rule. Some shady manufacturers will post a longer warranty, but when you read the fine print you find that you pay the freight both ways over-seas and the labor cost to repair the unit under warranty, or you get a refurbished replacement, so buyer beware.
While this PS should fit most modern ATX tower cases. This power supply exceeds the dimensions of the original ATX form factor to accommodate the larger 140mm cooling fan. This PS may not fit some older, or smaller ATX cases. Before purchasing make sure the case you intend to use can handle a PS that protrudes 6.5 inches into the case. I would also allow for an extra two inches of depth for the output cables, or 8.5 inches of total depth space. This power supply is by no means the deepest PS that I have seen or used in my builds, its just a factor to be aware of.
The variable speed fan ran quietly during my testing and provided excellent airflow. I credit this to the larger 140mm fan that Corsair used, versus the standard 120mm fans used by other PS.
Corsair also includes a package of 10 black wire ties to help dress the cables with and four black colored matching mounting screws. The logo stickers applied to both sides of the PS are reversed, so no matter which mounting orientation you use (top or bottom mount) the logo showing is always right side up. All of the output jacks and cables are clearly labeled. These are all a nice added touches.
As a longtime user of Corsair power supplies I have no issues with recommending the CX750M PS for end-users looking for a good, cost effective, power supply. These are also excellent replacements for older computers with failed power supplies. This power supply should have no problems powering two low-end to mid-end, non-over-clocked graphics cards. I would recommend a larger, more costly, gold PS for users who want to build a high-end gaming, or workstation system. This power supply should be fine though for most budget to middle market class end-user applications.