A few questions before i buy?

Im buying the components to my first build within the next 3 days. Is it all compatible? is there anyway to save any money without affecting performance?

Case: Coolermaster Haf 922
http://www.amazon.co.uk/Coolermaster-HAF-922-Tower-Chas...

CPU: AMD Phenom II X4 965
http://www.amazon.co.uk/AMD-HDZ965FBGMBOX-Phenom-II-965...

Motherboard: Asus M5A97 PRO Motherboard
http://www.amazon.co.uk/Asus-M5A97-Motherboard-Socket-T...

RAM: Crucial Ballistix 8GB (4GB x2) DDR3 Memory Kit
http://www.amazon.co.uk/Crucial-Ballistix-BLS2CP4G3D133...

GPU: XFX ATI Radeon HD6950 Graphics Card
http://www.amazon.co.uk/XFX-Radeon-HD6950-Graphics-Disp...

PSU: Corsair HX 650W Modular Power Supply
http://www.scan.co.uk/products/650w-corsair-cmpsu-650hx...

DVD writer: Sony AD-7261S-0B 24x Internal DVDRWRAM SATA Black Lightscribe
http://www.amazon.co.uk/Sony-AD-7261S-0B-Internal-DVDRW...

CPU Cooler: Coolermaster Hyper 212 EVO CPU Cooler
http://www.scan.co.uk/products/coolermaster-hyper-212-e...

HDD: Western Digital Caviar Blue 500GB SATAIII 6Gb/s 16MB Cache
http://www.amazon.co.uk/Western-Digital-Caviar-SATAIII-...

Monitor: Acer LCD ET.WG5HE.016 21.5 Inch Monitor
http://www.argos.co.uk/static/Product/partNumber/683329...

Keyboard: Microsoft Sidewinder X4 Keyboard
http://www.amazon.co.uk/Microsoft-Sidewinder-X4-Keyboar...

Mouse: Logitech G400 Optical Gaming Mouse
http://www.amazon.co.uk/Logitech-G400-Optical-Gaming-Mo...


http://www.amazon.co.uk/Coolermaster-HAF-922-Tower-Chas...

CPU: AMD Phenom II X4 965
http://www.amazon.co.uk/AMD-HDZ965FBGMBOX-Phenom-II-965...

Motherboard: Asus M5A97 PRO Motherboard
http://www.amazon.co.uk/Asus-M5A97-Motherboard-Socket-T...

RAM: Crucial Ballistix 8GB (4GB x2) DDR3 Memory Kit
http://www.amazon.co.uk/Crucial-Ballistix-BLS2CP4G3D133...

GPU: XFX ATI Radeon HD6950 Graphics Card
http://www.amazon.co.uk/XFX-Radeon-HD6950-Graphics-Disp...

PSU: Corsair HX 650W Modular Power Supply
http://www.scan.co.uk/products/650w-corsair-cmpsu-650hx...

DVD writer: Sony AD-7261S-0B 24x Internal DVDRWRAM SATA Black Lightscribe
http://www.amazon.co.uk/Sony-AD-7261S-0B-Internal-DVDRW...

CPU Cooler: Coolermaster Hyper 212 EVO CPU Cooler
http://www.scan.co.uk/products/coolermaster-hyper-212-e...

HDD: Western Digital Caviar Blue 500GB SATAIII 6Gb/s 16MB Cache
http://www.amazon.co.uk/Western-Digital-Caviar-SATAIII-...

Monitor: Acer LCD ET.WG5HE.016 21.5 Inch Monitor
http://www.argos.co.uk/static/Product/partNumber/683329...

Keyboard: Microsoft Sidewinder X4 Keyboard
http://www.amazon.co.uk/Microsoft-Sidewinder-X4-Keyboar...

Mouse: Logitech G400 Optical Gaming Mouse
http://www.amazon.co.uk/Logitech-G400-Optical-Gaming-Mo...

total cost: Around £750