[SOLVED] Do I need 750W or 650W PSU?

[Bintu55]

Hi, I built a system 4 years ago and a few days ago my PSU(Corsair CX750) failed. I need to purchase a new PSU for my system. My friend mentioned that I don't need 750W PSU and added that my system will run very well with 650W PSU.
So here I am asking you experts to guide me please. Which PSU I should buy?

System specifications:-

• CPU : Intel core i7 4790K
• CPU Cooler : Corsair Hydro H60
• Motherboard : Asus Z97-A
• RAM : Corsair Vengeance 8 GB DDR3 x 4 = 32 GB
• Storage: 2 SSD + 1 TB 7200 rpm HDD
• GPU: GTX 970
• Optical Drive: DVD-RW
• Monitor : 22inch LED monitor

PC Part Picker Link : https://in.pcpartpicker.com/list/Q3R4zY

I'm from India so I have very limited options to purchase PSU. Your guidance will immensely help me.

Thank you

 

[Barty1884]

For a 4790K + 970, a quality ~550W range unit would be more than sufficient. If a good quality 650-750W unit is available for similar money, it's not a "bad" choice, but it's not totally necessary.

What kind of budget do you have for a new PSU?

PCPP only pulls from Amazon in India, and these would be the two most affordable, yet good quality units available:
https://in.pcpartpicker.com/products/compare/FdRFf7,z9CD4D/

 

[Bintu55]

For a 4790K + 970, a quality ~550W range unit would be more than sufficient. If a good quality 650-750W unit is available for similar money, it's not a "bad" choice, but it's not totally necessary.

What kind of budget do you have for a new PSU?

PCPP only pulls from Amazon in India, and these would be the two most affordable, yet good quality units available:
https://in.pcpartpicker.com/products/compare/FdRFf7,z9CD4D/

My budget is $100(INR 7000) because that's what I had paid for Corsair CX750.

The PSUs you have mentioned are within my budget.
If in future I OC my system then will 550W will be suffice?

Also, should I go for 550W 80+ Gold Certified or 600W 80+ certified?

 

[Barty1884]

Depends on the specific PSUs. Not all "550W" or "600W" units are created equal.

With that kind of budget, I'd opt for the SeaSonic made, Earthwatts Gold Pro 550W I linked earlier.

Your 'stock' load power draw is in the range of 200-250W max. A 550W unit gives you ample headroom for overclocking, yes.

 

[Bintu55]

Depends on the specific PSUs. Not all "550W" or "600W" units are created equal.

With that kind of budget, I'd opt for the SeaSonic made, Earthwatts Gold Pro 550W I linked earlier.

Your 'stock' load power draw is in the range of 200-250W max. A 550W unit gives you ample headroom for overclocking, yes.

I will purchase that. Thank you for your valuable input.

 

[Dark Lord of Tech]

PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic - FOCUS Plus Gold 650 W 80+ Gold Certified Fully-Modular ATX Power Supply ($61.98 @ Newegg)
Total: $61.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-04-23 16:57 EDT-0400