Is this enough wattage output for my future rig??

Here are the specs. I don't plan on using Crossfire, but maybe OCing in the future. Would a 650 watt PSU be adequate, or should I be looking for something that's at least 700?

Intel Core 2 Quad Q6600http://en.wikipedia.org/wiki/Intel_Core_2 2.4GHz (Not trying to go for top notch CPU, just as long as its a quad core...I can OC it later if I feel the need to)
http://www.newegg.com/Product/Prod [...] 6819115017

GIGABYTE GA-P35-S3G LGA 775 Intel P35 ATXhttp://en.wikipedia.org/wiki/ATX Intel Motherboard (I like this board because the price, reveiws, gigabit ethernet, decent built in sound, 5 PCIs, plenty of ports for my uses)
http://www.newegg.com/Product/Prod [...] 6813128084

SAMSUNG Black 22X DVD+R 8X DVD+RW 16X DVD+R DL 22X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 32X CD-RW 48X CD-ROM 2MB Cache SATA 22X DVD Burner
http://www.newegg.com/Product/Prod [...] 6827151171

Western Digital Caviar SE16 WD2500AAKS 250GB 7200 RPM 16MB Cache SATA 3.0Gb/s Hard Drive (I like WD, nice size cache, good price)
http://www.newegg.com/Product/Prod [...] 6822136161

SAPPHIRE 100242L Radeon HD 4850 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card (awesome for the price, and beats out similar NVIDIA cards in the same price range)
http://www.newegg.com/Product/Prod [...] 6814102747

OCZ Platinum 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory (first choice was Corsair XMS, but these were much cheaper and reveiws were pretty good)
XMS, but these were much cheaper and reveiws were pretty good)
http://www.newegg.com/Product/Prod [...] 6820227298

thanks, sounds good. yes, corsair was the brand i was looking at, just didnt want to underpower myself