Corsair CX750w Really That Bad?

[AWPortunity]

I'm working on a new gaming rig and planned on using my old CX750 for it. I've recently been hearing very negative things about the CX series PSUs and Corsair PSUs in general. I was curious if it would be worth my while to spend an extra $60 or so on a higher end GPU for my new system.

Please explain the problems I'd run into if I went with the CX and why I shouldn't use it if you feel that way.


PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($224.99 @ SuperBiiz)
Motherboard: ASRock Z97 EXTREME4 ATX LGA1150 Motherboard ($101.98 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($54.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($119.95 @ SuperBiiz)
Case: Phanteks Enthoo Pro ATX Full Tower Case ($99.99 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.49 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($86.98 @ OutletPC)
Total: $708.37
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-28 18:22 EDT-0400

(Some parts are excluded because I am reusing them)

GTX970
Hyper 212 Evo

 

[smorizio]

with cheap low end power supply to get the cost down they use cheap caps. google your power supply and review and look at the sites that take your unit apart.
http://www.hardocp.com/article/2015/01/21/corsair_cx750_750w_power_supply_review/#.VUAMC0fE6zk
one thing to check is if you have an older version of the cx750 is it haswell ready?? last year a lot of vendors had to retest there units to see if they would run at low power that haswell does and a lot of them failed. they wil lshut down when haswell trys to sleep.

 

[toyftw]

I'm working on a new gaming rig and planned on using my old CX750 for it. I've recently been hearing very negative things about the CX series PSUs and Corsair PSUs in general. I was curious if it would be worth my while to spend an extra $60 or so on a higher end GPU for my new system.

Please explain the problems I'd run into if I went with the CX and why I shouldn't use it if you feel that way.


PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($224.99 @ SuperBiiz)
Motherboard: ASRock Z97 EXTREME4 ATX LGA1150 Motherboard ($101.98 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($54.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($119.95 @ SuperBiiz)
Case: Phanteks Enthoo Pro ATX Full Tower Case ($99.99 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.49 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($86.98 @ OutletPC)
Total: $708.37
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-28 18:22 EDT-0400

(Some parts are excluded because I am reusing them)

GTX970
Hyper 212 Evo

Hi - A decent 750w unit will power any system with a single modern GPU. The CX series is
a budget/entry level series. The best advice I can offer is: start out with it, but realize budget level
PSU's aren't really designed for gaming systems, but for general office/surfing type workloads.
Then, after you save for a couple (or more if needed) month's, upgrade to a better quality
unit. You do not need more power (unless you plan on CF/SLI high end cards), a good quality
550w unit will run most single GPU systems, and a good quality 650w unit will run all but a
couple single GPU systems.

 

[AWPortunity]

I'm working on a new gaming rig and planned on using my old CX750 for it. I've recently been hearing very negative things about the CX series PSUs and Corsair PSUs in general. I was curious if it would be worth my while to spend an extra $60 or so on a higher end GPU for my new system.

Please explain the problems I'd run into if I went with the CX and why I shouldn't use it if you feel that way.


PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($224.99 @ SuperBiiz)
Motherboard: ASRock Z97 EXTREME4 ATX LGA1150 Motherboard ($101.98 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($54.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($119.95 @ SuperBiiz)
Case: Phanteks Enthoo Pro ATX Full Tower Case ($99.99 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.49 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($86.98 @ OutletPC)
Total: $708.37
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-28 18:22 EDT-0400

(Some parts are excluded because I am reusing them)

GTX970
Hyper 212 Evo

Hi - A decent 750w unit will power any system with a single modern GPU. The CX series is
a budget/entry level series. The best advice I can offer is: start out with it, but realize budget level
PSU's aren't really designed for gaming systems, but for general office/surfing type workloads.
Then, after you save for a couple (or more if needed) month's, upgrade to a better quality
unit. You do not need more power (unless you plan on CF/SLI high end cards), a good quality
550w unit will run most single GPU systems, and a good quality 650w unit will run all but a
couple single GPU systems.

Well, with this computer I'm working on I plan on running games like GTA V and other pretty intensive games for hours. I won't risk overclocking anything on the cx750 with the information I have, but will I risk breaking anything by running these games with these specs?

 

[toyftw]

I'm working on a new gaming rig and planned on using my old CX750 for it. I've recently been hearing very negative things about the CX series PSUs and Corsair PSUs in general. I was curious if it would be worth my while to spend an extra $60 or so on a higher end GPU for my new system.

Please explain the problems I'd run into if I went with the CX and why I shouldn't use it if you feel that way.


PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($224.99 @ SuperBiiz)
Motherboard: ASRock Z97 EXTREME4 ATX LGA1150 Motherboard ($101.98 @ Newegg)
Memory: G.Skill Sniper Series 8GB (2 x 4GB) DDR3-1866 Memory ($54.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($119.95 @ SuperBiiz)
Case: Phanteks Enthoo Pro ATX Full Tower Case ($99.99 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.49 @ OutletPC)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($86.98 @ OutletPC)
Total: $708.37
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-04-28 18:22 EDT-0400

(Some parts are excluded because I am reusing them)

GTX970
Hyper 212 Evo

Hi - A decent 750w unit will power any system with a single modern GPU. The CX series is
a budget/entry level series. The best advice I can offer is: start out with it, but realize budget level
PSU's aren't really designed for gaming systems, but for general office/surfing type workloads.
Then, after you save for a couple (or more if needed) month's, upgrade to a better quality
unit. You do not need more power (unless you plan on CF/SLI high end cards), a good quality
550w unit will run most single GPU systems, and a good quality 650w unit will run all but a
couple single GPU systems.

Well, with this computer I'm working on I plan on running games like GTA V and other pretty intensive games for hours. I won't risk overclocking anything on the cx750 with the information I have, but will I risk breaking anything by running these games with these specs?

No, you will be OK. Even tho it is budget level, it has more power than you need, so won't be stressed
like a 450-500w unit would, and has protection features that will shut the unit down before damage to
your PC components.

However, plan to upgrade when possible. If you read the review smorizio linked you will see the
cx750 failed HardOcp's lab review. I consider HardOcp to be one of the top 3 PSU review
sites (with jonnyguru and Hardware Secrets).

 

[Karadjgne]

The biggest problem with CX units is their size. The gpu determines the psu. You can run a 970 on a quality 520w /550w all day long and not break a sweat. Then you add a CX into the works and ppl use them because they are cheaper, and of course they are a big company so must be good. Unfortunately, they aren't. The caps on their secondaries are pretty lousy, and have a relatively high failure rate, when pushed @max for too long.

Will a cx550 push a 970? Yep, no worries. Unless that 970 is paired with a high oc cpu and trying to game at ultra on a 4k monitor. That's too much load for a psu designed for light duty games.

You have a cx750. Considerably more powerful on the 12v rail. Whereas a 970 might be pushing 85%+ capability for hours on a 550w, you'd see closer to 60%, which will be easy for that psu.

Your 75pw CX will be fine for the 970,no matter the load, since even designed for light duty going, what ever that 970 will pull will be light duty, simply due to the size of the psu.

 

[giantbucket]

the problem with the CX isn't the CX but the users. and i think Corsair should have avoided making a CX that's more than 500W - it's just inviting people with overclocked-and-crossfired systems to push the power supply harder than it was designed to be pushed.

they should have said "hey, you want more than 500W because you're overclocking and running dual graphics cards? buy the RM or HX or AX, it's designed for that"

sure, a SmartCar can carry two people. but not two fat-ass Americans from NY to LA via the Tail Of The Dragon.

 

[AWPortunity]

Thanks for the info everyone. I'll stick with the cx750 for a while, maybe until I add another GPU (if I ever do). I've used the 750 in my last computer and never really experienced problems with it, so I guess I will use it until I do have problems. Thanks for the help!