How much power will this need? I don't want to overestimate my system.

[dekleining]

This is the system I will probably build. T'M GOING TO BUY ANOTHER 1GB 4780 in the near future so the power supply needs to consider that!
I'm thinking modular...?
Thanks in advanced for any help.

Processor
Intel Core 2 Duo E8500 3.16Ghz
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115036&nm_mc=OTC-pr1c3grabb3r&cm_mmc=OTC-pr1c3grabb3r-_-Processors+-+Desktops-_-Intel-_-19115036


Processor Fan
XIGMATEK HDT-S1283 120mm Rifle CPU Cooler
http://www.newegg.com/Product/Product.aspx?Item=N82E16835233003
Bracket
http://www.newegg.com/Product/Product.aspx?Item=N82E16835233019


Mother Board
GIGABYTE GA-EP45-UD3P LGA 775 Intel P45 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128358


Graphics Card
Radeon HD 4870
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102801


Memory
G.SKILL HK 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL4D-4GBHK
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231219


Drive
Western Digital Caviar Black WD6401AALS 640GB 7200 RPM 32MB Cache SATA 3.0Gb/s Hard Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136319


Raid Controller
HighPoint RocketRAID2640X4 PCI-Express x4 SATA / SAS Controller Card RAID 0/1/5/10 JBOD
http://www.newegg.com/Product/Product.aspx?Item=N82E16816115050


Disk Drive
http://www.newegg.com/Product/ProductReview.aspx?Item=N82E16827136152

 

[aford10]

For a single 4870 in that system this antec 500w will be perfect
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007

 

[gkay09]

Well if u are not gonna add another graphic card and nt overclocking, then 450W is more than enuf...
But if u are jus gonna overclock and not gonna add another graphic card and nt overclocking, then 550Wis more than enuf...
But if u are planning to verclock and add another gfx card later, then get atleast 700W PSU..
But be sure u get top tier PSUs...

 

[xthekidx]

This one is the same price after MIR and higher quality, but a 500w PSU with 2x6 pin connectors will be enough for that system you have listed there as long as its from a good manufacturer.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005&Tpk=650tx

 

[issar85]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817709015

 

[xthekidx]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817709015

No. I do like a good laugh every once in a while though, thanks for that. Maybe the next time I'm in the market for a doorstop I'll give that one a look.

 

[gkay09]

No.

YES....Absolutely No...

I mean don go wit tat PSU like xthekid said

 

[dokk2]

Did anyone read the reviews [for this psu] they were not good,do not fool around when buying a psu you buy cheap you get cheap,OCZ StealthXStream 600w ,according to hardwaresecrets.com could have been sold as a 700w would be my recommendation ,it's what i got..

 

[halcyon]

Good calculator: http://www.antec.outervision.com/

 

[kubes]

sunbeam is two thumbs down. Try to stick with compainies like Corsair, Antec, or PC Power & Cooling. Probally going to be your best bang for your buck psu's and still maintain a high lvl of quality. Like dokk2 said, "Do not fool around when buying a psu." There's a good chance it'll be more than the psu you'll be replacing if something goes wrong.

 

[Shadow703793]

This one is the same price after MIR and higher quality, but a 500w PSU with 2x6 pin connectors will be enough for that system you have listed there as long as its from a good manufacturer.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005&Tpk=650tx

+1 for the 650TX

 

[dekleining]

650tx it is. thanks !

 

[cjl]

With just the listed components, you'd have to try hard to even draw over about 300W. A 600W or so supply would give some room for future expansion (a second 4870, a quad, etc), so it would be a good choice. The 650TX is an excellent choice in this category. If you just wanted to run the system as specified above though, you could easily do it with a good quality 400-450W, such as the 450VX for $30 less.