Is this gaming rig/pc worth it? Estimate the total price of all the parts?

[esstrada]

My friend is selling his gaming pc for $650 here are the specs
the specs are
--AMD Sempron 145 http://www.amazon.com/AMD-Sempron-Sargas…
--Lan Party jr 790gx - m3h5 motherboard http://www.newegg.com/Product/Produc...82E16813136068
--antec p183
http://www.newegg.com/Product/Product.as…
--8GB of ddr3 1600 Mushkin?
-- RAM PNY GeForce GTS 450?
1) 500GB WD SATAII drive for data, movies and pictures http://www.amazon.com/Western-Digita.../dp/B001JSSDGU
2)Corsair Extreme series 2GB SOILD STATE DRIVE - http://www.newegg.com/Product/Produc...82E16820233089
3)64GB AData Soild State Drive http://www.newegg.com/Product/Produc...82E16820211485
black ice dimple tube radiator http://www.koolertek.com/computer-p...lack-Ice-GTX-120-Xtreme-Radiator-202p1043.htm
---lightscribe cd/dvd plaer burner
---Pump is a swiftech 50psi pump http://www.koolertek.com/computer-parts/pc/Swiftech-MCP655-B-Pump-224p1458.htm
---1000W antec CP power supply

Lastly, I would like to upgrade to an excellent cpu. Ex: phenom. What do you recommend? Does the mobo support it?

MOD EDIT: Rule #14 No price checks. - Zap