Question on power consumption

[grimghast]

Ok, I recently ordered a CX 750 Corsair PSU for my first build. I have tinkered with components before, but this will be my first build with all raw components and case. The main purpose will be for gaming, and learning the processes for overclocking and tweaking the system to get the desired result. (Whatever that may be for the task at hand.) I ordered the CX after doing some research and seeing some positive reviews of the psu, but after the order had shipped I began seeing other threads with information I missed. Namely bad capacitors, limited lifespan, and the 80 bronze meaning it will supply 80 percent of 750 at load. There has been conflicted info, so I'm here for clarification.

I plan to overclock to some degree, but I'm wondering on how much power extra clocks consume on cpu and gpu, and on the gpu recommendations of 750w minimum. Is there overhead factored in?
Specs are:

Corsair 500r Carbide Edition
AMD 8350 Vishera
ASRock Killer Fatality 990x
Corsair CX 750w
1tb HDD @ 7200
Asus 5.25 optical
Asus R9 270 2gb
Cooler Master Hyper 212
G. Skill Sniper X Series 8gb SDRAM @ 1866

I plan in the future to upgrade to either XFX DD Black R9 280x or HIS Ice Q X2 R9 280x. (Both rated at 750w minimum)
Any tips or clarification would be appreciated.

 

[Dark Lord of Tech]

Corsair CX SERIES ARE POOR AND USE CHEAP CAPACITORS.

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($114.99 @ NCIX US)
Total: $114.99
Prices include shipping, taxes, and discounts when available

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story6&reid=377

 

[grimghast]

Yes, thank you. I mentioned I was aware of this in the OP. As to the other questions about power consumption as it relates to overclocking the cpu and gpu? As far as how much overhead I will be needing on what multipliers?

 

[Dark Lord of Tech]

If overclocking I'd go to 1000w.

 

[grimghast]

So overclocking an 8350 4.0 GHz to say, 4.5 GHz requires 250w more power? Or is this a safe recommendation to guarantee I will have what is required regardless of what I end up setting it at?

 

[Dark Lord of Tech]

1000W is a little above what you need , but when overclocking I prefer the high end.

 

[Goodeggray]

With a single R9 270 and a FX8350 a good 600w psu even with OC is more than enough. The 80% refers to efficiency. The psu can put out at least 805 of the wattage it draws from the wall outlet. If a 80% psu is putting out 400W it's drawing 500w from the AC outlet. Psu are rated at max output so the Corsair CX750 a 80% 750W need to draw around 940W from the wall in order to produce 750W.

 

[grimghast]

With a single R9 270 and a FX8350 a good 600w psu even with OC is more than enough. The 80% refers to efficiency. The psu can put out at least 805 of the wattage it draws from the wall outlet. If a 80% psu is putting out 400W it's drawing 500w from the AC outlet. Psu are rated at max output so the Corsair CX750 a 80% 750W need to draw around 940W from the wall in order to produce 750W.

Thank you sir. This is exactly the type of specific information I was needing. Any experience with overclocks and how it relates to power consumption?

Also, I upgraded the psu because I'll be moving up to R9 280x soon, and looking at the options for crossfire capabilities.

 

[Goodeggray]

With a single R9 270 and a FX8350 a good 600w psu even with OC is more than enough. The 80% refers to efficiency. The psu can put out at least 805 of the wattage it draws from the wall outlet. If a 80% psu is putting out 400W it's drawing 500w from the AC outlet. Psu are rated at max output so the Corsair CX750 a 80% 750W need to draw around 940W from the wall in order to produce 750W.

Thank you sir. This is exactly the type of specific information I was needing. Any experience with overclocks and how it relates to power consumption?

Also, I upgraded the psu because I'll be moving up to R9 280x soon, and looking at the options for crossfire capabilities.

 

[Goodeggray]

Gpus will use way more power than cpu even overclocked ones. Current gpus draws a lot less. Single gpus will draw 100 to 400w. Cpus draw 65 to 225w. The 8350 pushed to the max may draw 125 to 175w. The rest of the PC will only use 25 to 125w.

 

[Goodeggray]

With a single R9 270 and a FX8350 a good 600w psu even with OC is more than enough. The 80% refers to efficiency. The psu can put out at least 805 of the wattage it draws from the wall outlet. If a 80% psu is putting out 400W it's drawing 500w from the AC outlet. Psu are rated at max output so the Corsair CX750 a 80% 750W need to draw around 940W from the wall in order to produce 750W.

Thank you sir. This is exactly the type of specific information I was needing. Any experience with overclocks and how it relates to power consumption?

Also, I upgraded the psu because I'll be moving up to R9 280x soon, and looking at the options for crossfire capabilities.

 

[Goodeggray]

Example the Fx9590 is a factory OC 8350 to 4.7 and uses 220w max. The stock 8350 max is 125w.

 

[grimghast]

So if we use that as a standard the 8350 comes stock at 125w max and the factory oc is 4.7 at 220w. So .7 GHz translated to 95w increase. Thank you much for the clarification.