Power requirements

[Tumbleweed]

Hey guys

Im not much of a technofundi when it comes to building a pc off the bat...
How big a power supply wud i need for the following:

hd6850
i5 760
4g ram
mobo, fans, etc etc [im assuming these components dont require lotsa power...]

Also, not sure what case to get then to fit everything in nicely with enuf space.

 

[nakedpeanut]

vx450w will serve your purpose just fine assuming you dont wanna go xfire or big Overclocks?

EDIT: to clarify; a good 450w PSU that is rated at 80+ efficient is adequate.. If you want head room for OC and bigger GPU etc then I'd get the vx550w

 

[PostmanPot]

±550watt PSU.

±R950 Corsair VX550 , Eps12V , ATX 12V V2.2 - 550w ( 12v : 492w ) , 80PLUS certified for energy saving , 24pin ( 4pin detachable ) , with active-PFC , 6pin PCI-E + 1x8pin (6+2) PCI-E power connectors , 1x 120mm thermal controled fan ; 6x SATA ; with OCP, OVP, OPP, SCP, UVP - 5 years warranty - no power cord

±R800 Coolermaster RS550-ACAAE3 GX 550w ( 12v: 528w ) , ATX 12V V2.31, active PFC , 2x 8(6+2) pin PCI-E power connectors, 24pin ( 4 pin detachable ) , 1x 120mm PWM fan ; with OVP/ UVP/OPP/OTP /SCP ; 80 PLUS certified - 5 years warranty


Case: ±R850 - Coolermaster RC-692-KKN1 , cm690ii Plus , No psu ( bottom placed psu design ) , black , support upto 2 radiators , rubber stand for anti-vibration , , tools free for Pci+3.5"+5.25" ; 2 x front usb + eSATA + audio in/out - 3/4x 5.25" - ( 4x tool-free ) , 1/0 x 3.5" , 6x 3.5" hidden ( 4xhdd in removable hdd cage ; side removable ) , with adapter for 2x2.5" hdd - 1 x front 140mm blue-led fan with on/off switch + 1 x rear 120mm fan + 1 x top 140mm fan upto 9 fans - atx http://www.coolermaster.com/product.php?product_id=6646&category_id=19

 

[stroebs]

I usually use http://extreme.outervision.com/psucalculatorlite.jsp to determine my power supply usage, and add about 100 Watts or so.

 

[Tumbleweed]

Thanks for the help n links guys!