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New PC Build - 650w or 750w PSU

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  • Power Supplies
  • Systems
  • PC gaming
Last response: in Systems
August 2, 2014 2:45:57 PM

Hi All

For my first gaming system build i was going to go with a GTX 760 gpu but decided to change it to a GTX 770 gpu. My question is with a gtx 770 and the rest off my hardware will a need 650w or 750w PSU?, also I may overclock my cpu slightly in the future

Components (hardware):
Processor: Intel i5-4690k
Motherboard: Gigabyte Z97X Gaming 5
Memory: Kingston HyperX FURY Series 8GB (2x4GB) DDR3 1866MHz
Graphics Card: Asus 2GB Nvidia GeForce GTX 770
Storage (SSD): Samsung 840 EVO 120GB 2.5 inch
Storage (HDD): 1TB Western Digital Black
Optical Disk Drive: LiteOn 24x SATA DVD RW
Power Supply: XFX P1-650X-XXB9 / XFX P1-750X-XXB9
CPU Cooling: Cooler Master Hyper 212 EVO (120mm)
Case: Fractal Design Arc Midi R2

Thanks for reading and your help

More about : build 650w 750w psu

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a b ) Power supply
August 2, 2014 2:49:37 PM

You only need a 650w PSU Unless you plan too go sli, It will also give you head room for Overclocking in your cpu and gpu, although i would go with a 4gb Windforce or Twin Frozr Gtx 770 as they will be faster than the asus.
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a b ) Power supply
August 2, 2014 2:52:26 PM

Littlesackninja said:
You only need a 650w PSU Unless you plan too go sli, It will also give you head room for Overclocking in your cpu and gpu, although i would go with a 4gb Windforce or Twin Frozr Gtx 770 as they will be faster than the asus.


This, especially if you plan on getting any monitor that runs above 1080p.
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a b ) Power supply
August 2, 2014 2:54:00 PM

Make sure too select the best answer too close the thread once your done
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August 2, 2014 3:09:12 PM

Thanks for the quick responses, After looking around I can get the 750W for only about £4 more than the 650W. I may consider SLI in the future so might as well go with the 750W if that's enough for 2 GTX 770's. As for the 4gb i don't plan to game over 1080p but thanks for the suggestion, I was just looking at thread about 2gb vs 4gb and people where saying 2gb is more than enough vram. It's hard as someone who is new to PC Builds to make decisions about what to get for my first build with so many mixed opinions on things :??: 
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a b ) Power supply
August 2, 2014 3:11:58 PM

2gb is fine if you don't plan to do SLI and you are on a 1080p Monitor, Above that you may find 4gb very useful. Also the Evga Supernova G2 750w Is a very good power supply with 10 year warranty!
Don't forget too pick the most useful answer.
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August 2, 2014 3:15:29 PM

Thanks again, I'll consider the evga aswell
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