Would this psu surfice?

[Jonny L]

OcUK GeForce 7900 GS 256MB GDDR3 TV-Out/Dual DVI (PCI-Express) - Retail OcUK GeForce 7900 GS 256MB GDDR3 TV-Out/Dual DVI (PCI-Express) - Retail £96.99
(£113.96) £96.99
(£113.96)
Gigabyte GA_965P_S3 (Socket 775) PCI-Express DDR2 Motherboard Gigabyte GA_965P_S3 (Socket 775) PCI-Express DDR2 Motherboard £74.99
(£88.11) £74.99
(£88.11)
Intel Core 2 DUO E6300 "LGA775 Allendale" 1.86GHz (1066FSB) - OEM Intel Core 2 DUO E6300 "LGA775 Allendale" 1.86GHz (1066FSB) - OEM £93.99
(£110.44) £93.99
(£110.44)
GeIL 2GB (2x1GB) PC6400C4 800MHz Ultra Low Latency DDR2 Dual Channel Kit (GX22GB6400UDC) GeIL 2GB (2x1GB) PC6400C4 800MHz Ultra Low Latency DDR2 Dual Channel Kit (GX22GB6400UDC) £137.99
(£162.14) £137.99
(£162.14)
Arctic Cooling Freezer 7 Pro CPU Cooler (Socket 775) Arctic Cooling Freezer 7 Pro CPU Cooler (Socket 775) £13.99
(£16.44) £13.99
(£16.44)
OCZ ModStream 450w ATX2.2 Power Supply OCZ ModStream 450w ATX2.2 Power Supply

I'm looking into buying the kit listed above, I would just like to know if the psu I have on my list would be beefy enough to support everything on the list (the e6300 will hopefully be heavily overclocked to around 3ghz) and a hard drive, dvd player and about 3 or 4 fans.

Thanks for any help guys