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Power Supply Size for New Build

post #1 of 5
Thread Starter 
Hey all, I am in the process of building a new PC. I would say that I probably have an above average competency when it comes to computers, but I am certainly not extremely experienced when it comes to the details. I use my PC mostly for high-end gaming, as well as common tasks like internet browsing and Microsoft Office. Occasionally I have used it for video editing, but mostly it is used for gaming.

With all that being said, this is the first time I have actually tried to build a computer strictly from just assembling components. I usually start with a pre-built PC and then continue to upgrade it until it becomes too obsolete (or in my last particular case, the caps on the motherboard fry). With this new build I would also like to start to get into the world of overclocking, although I don't have any experience with that yet.

My main question is what size power supply you guys think I need to cover everything, plus allow me to OC and allow for future upgrades. I have tried using some online calculators, but I seem to get varying answers. Also, as a side note I was wondering if anybody had any thoughts on how many case fans and which fans I will need for my configuration (I have no plans to get into water cooling). Any other general comments on the build itself are also welcome! As I said, this is my first build so any input will be greatly appreciated. Here is the current build:

NZXT Switch 810 case (4 x 140mm fans, but with up to 10 140mm fan capacity)
ASUS P8Z77-V Motherboard
Intel i5-3570K Processor
Cooler Master Hyper 212 EVO
Corsair Vengeance 2x 8GB DDR3 memory
Blu-ray/DVD-RW combo drive
2 x Western Digital 1 TB HDD
128 GB SSD (boot drive plus some common applications and a couple games)
SLI (two video cards that I haven't chosen yet, although probably something like a GeForce GTX 560 or 670)

Current power supply is the XFX Core Edition Pro850W 80 Plus Bronze

Will this cover all of my needs including once I really start to get into OC, or am I going to need something more? If I am going to OC, will I need to get 6 more fans to max out the fan space in the Switch 810, or will that much cooling be unnecessary and a waste of power and money? Any other comments on the build itself?

Thanks everybody for any help you can give.
Edited by drummerguy1115 - 10/10/12 at 12:10am
post #2 of 5
Well, the total power draw of 10 fans is going to be about 7W. Not 70W, just 7W. It doesn't make a difference how many fans you have. Great build, but may I suggest dual 660 Ti's, that will be 3x the performance of dual 470s or 560s. If you get 660 Ti's, get the MSI Power Edition. Add a sound card. Every single computer in the world needs a sound card. An ASUS Xonar DX 7.1 Surround will be fine. An 850W power supply is fine considering that even with 660 Ti's overclocked, you will only be drawing about 575W. This will mean that an 850W power supply will be running at peak efficiency. You never want to max out a power supply because it will become quite inefficient. Your cooling is fine with 4 fans.
    
CPUMotherboardGraphicsGraphics
Core-i7 990x Extreme Edition ASUS ROG Rampage III Extreme EVGA GTX 560Ti (SLI) EVGA GTX 560Ti (SLI) 
RAMHard DriveHard DriveHard Drive
Corsair Dominator (6x4GB) DDR3 Intel 520 Series SSD Seagate Barracuda 7200.12 Corsair Force GT 
Optical DriveOptical DriveCoolingCooling
Sony Optiarc DVD ROM Sony Optiarc Blu-Ray Burner Corsair H100 SilverStone Air Penetrator 120mm Fans  
CoolingCoolingOSMonitor
SilverStone Air Penetrator 140mm Fans  Corsair 120mm Fan Windows 7 Ultimate x64 Dell 2209WAf 1680x1050 IPS  
KeyboardPowerCaseMouse
Dell QuietKey SK-8000 Corsair Pro Series Gold AX1200 Corsair Obsidian 800D Full Tower Logitech Performance MX Wireless 
AudioAudioAudioAudio
Creative Sound Blaster X-Fi Titanium Fatal1ty C... Logitech X-530 5.1 Surround  ASUS ROG Vulcan ANC Blue Snowball Brushed Aluminum Microphone 
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CPUMotherboardGraphicsGraphics
Core-i7 990x Extreme Edition ASUS ROG Rampage III Extreme EVGA GTX 560Ti (SLI) EVGA GTX 560Ti (SLI) 
RAMHard DriveHard DriveHard Drive
Corsair Dominator (6x4GB) DDR3 Intel 520 Series SSD Seagate Barracuda 7200.12 Corsair Force GT 
Optical DriveOptical DriveCoolingCooling
Sony Optiarc DVD ROM Sony Optiarc Blu-Ray Burner Corsair H100 SilverStone Air Penetrator 120mm Fans  
CoolingCoolingOSMonitor
SilverStone Air Penetrator 140mm Fans  Corsair 120mm Fan Windows 7 Ultimate x64 Dell 2209WAf 1680x1050 IPS  
KeyboardPowerCaseMouse
Dell QuietKey SK-8000 Corsair Pro Series Gold AX1200 Corsair Obsidian 800D Full Tower Logitech Performance MX Wireless 
AudioAudioAudioAudio
Creative Sound Blaster X-Fi Titanium Fatal1ty C... Logitech X-530 5.1 Surround  ASUS ROG Vulcan ANC Blue Snowball Brushed Aluminum Microphone 
  hide details  
Reply
post #3 of 5
Thread Starter 
Thanks for the reply! I edited the post above. I meant to say 670's, not 470's, but I will take a look at the 660's as well.
post #4 of 5
More like 25W of fans, not 7W or 70W. Still not much. Quality 650W - 750W power supply should be just fine for 560s/570s/660s/670s/680s. 470s, 480s, and 580s would require a little bit more juice.
post #5 of 5
You have a point. I will differ from fan to fan anyway.
    
CPUMotherboardGraphicsGraphics
Core-i7 990x Extreme Edition ASUS ROG Rampage III Extreme EVGA GTX 560Ti (SLI) EVGA GTX 560Ti (SLI) 
RAMHard DriveHard DriveHard Drive
Corsair Dominator (6x4GB) DDR3 Intel 520 Series SSD Seagate Barracuda 7200.12 Corsair Force GT 
Optical DriveOptical DriveCoolingCooling
Sony Optiarc DVD ROM Sony Optiarc Blu-Ray Burner Corsair H100 SilverStone Air Penetrator 120mm Fans  
CoolingCoolingOSMonitor
SilverStone Air Penetrator 140mm Fans  Corsair 120mm Fan Windows 7 Ultimate x64 Dell 2209WAf 1680x1050 IPS  
KeyboardPowerCaseMouse
Dell QuietKey SK-8000 Corsair Pro Series Gold AX1200 Corsair Obsidian 800D Full Tower Logitech Performance MX Wireless 
AudioAudioAudioAudio
Creative Sound Blaster X-Fi Titanium Fatal1ty C... Logitech X-530 5.1 Surround  ASUS ROG Vulcan ANC Blue Snowball Brushed Aluminum Microphone 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
Core-i7 990x Extreme Edition ASUS ROG Rampage III Extreme EVGA GTX 560Ti (SLI) EVGA GTX 560Ti (SLI) 
RAMHard DriveHard DriveHard Drive
Corsair Dominator (6x4GB) DDR3 Intel 520 Series SSD Seagate Barracuda 7200.12 Corsair Force GT 
Optical DriveOptical DriveCoolingCooling
Sony Optiarc DVD ROM Sony Optiarc Blu-Ray Burner Corsair H100 SilverStone Air Penetrator 120mm Fans  
CoolingCoolingOSMonitor
SilverStone Air Penetrator 140mm Fans  Corsair 120mm Fan Windows 7 Ultimate x64 Dell 2209WAf 1680x1050 IPS  
KeyboardPowerCaseMouse
Dell QuietKey SK-8000 Corsair Pro Series Gold AX1200 Corsair Obsidian 800D Full Tower Logitech Performance MX Wireless 
AudioAudioAudioAudio
Creative Sound Blaster X-Fi Titanium Fatal1ty C... Logitech X-530 5.1 Surround  ASUS ROG Vulcan ANC Blue Snowball Brushed Aluminum Microphone 
  hide details  
Reply
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