PC Specs - is it any good - can you help make it better?

Is the following a good spec for a computer I'm thinking about buying - budget about £500

Case

STYLISH PIANO BLACK ENIGMA CASE + 2 FRONT USB

Processor (CPU)

AMD ATHLON II X4 640 (3.00GHz/2MB CACHE/AM3)

Motherboard

ASUS® M4A87TD/USB3: DUAL DDR3,SATA 6.0GB/s, USB 3.0

Memory (RAM)

8GB SAMSUNG DDR3 DUAL-DDR3 1333MHz (2 X 4GB)

Graphics Card

1GB ATI RADEON™ HD5770 - DVI,HDMI,VGA - DX® 11

Memory - 1st Hard Disk

1TB SERIAL ATA 3-Gb/s HARD DRIVE WITH 16MB CACHE (7,200rpm)

1st DVD/BLU-RAY Drive

24x DUAL LAYER DVD WRITER ±R/±RW/RAM

Power Supply

450W Quiet 80 PLUS Dual Rail PSU + 120mm Case Fan (£29)

Processor Cooling

SUPER QUIET 22dBA TRIPLE COPPER HEATPIPE CPU COOLER (£19)

Sound Card

ONBOARD 8 CHANNEL (7.1) HIGH DEF AUDIO (AS STANDARD)

Network Facilities

ONBOARD 10/100/1000 GIGABIT LAN PORT - AS STANDARD ON ALL PCs

USB Options

6 x USB 2.0 PORTS @ BACK PANEL (MIN 2 FRONT PORTS) AS STANDARD

Operating System

NO OPERATING SYSTEM REQUIRED

Office Software

NO OFFICE SOFTWARE

Anti-Virus

NO ANTI-VIRUS SOFTWARE

Warranty

3 Year Silver Warranty (1 Year Collect & Return, 1 Year Parts, 3 Year Labour) (£5)

Delivery

STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)

Build Time

Standard Build - Approximately 11 to 13 working days

Quantity

1

Price: £491.00 including VAT and delivery.

This is from PC Specialist.co.uk