First Custom PC, Need Feedback

[Zappayowyow]

Hello all. After some research and restless nights I have finally put together a hotlist for my first custom PC. Unfortunately, I do not really know enough to prevent myself from making mistakes. If you guys could take a look at the specs below and provide some feedback I would greatly appreciate it.

To provide some context, I use my PC for gaming, but not competitively. I also rarely get involved with graphical monsters like the Crisis series. Something which will own Sims 3 and Diablo III when it comes out should suit my needs fine. Thanks in advance.

POWER SUPPLY: 420 Watts Standard Case Power Supply

CPU: AMD Phenom™II X4 955 Black Edition Quad-Core CPU w/ HyperTransport Technology

COOLING FAN : AMD ATHLON64
CERTIFIED CPU FAN & HEATSINK

MOTHERBOARD: Asus M3A76-CM AMD 760G Chipset DDR2/1066 SATA RAID PCIe Mainboard w/ATI 3000 Graphic, GbLAN, USB2.0, & 7.1Audio

MEMORY: 4GB (2GBx2) PC6400 DDR2/800 Dual Channel Memory (Corsair or Major Brand)

# VIDEO CARD: NVIDIA GeForce 9500 GT 1GB 16X PCI Express (Major Brand Powered by NVIDIA)

HARD DRIVE: Single Hard Drive (500GB SATA-II 3.0Gb/s 16MB Cache 7200RPM HDD)

Optical Drive: LG 20X DVD±R/±RW + CD-R/RW DRIVE DUAL LAYER (BLACK COLOR)

SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO

NETWORK: Onboard Gigabit LAN Network

USB PORT: Built-in USB 2.0 Ports

OS: Microsoft® Windows Vista™ Home Basic w/ Service Pack 1 (64-bit Edition)

[nessus550]

The configuration is OK but the graphic card is underpowered, change it for a minimum 9600GT, if needed change the Phenom II to a inferior speed.

Regards

[Cobracon]

1) I strongly recommend a Corsair or OCZ PSU of 500 watts or more.

2) If you go with an nVidia GPU, a 9800 GT is a minimum, but I recommend a 9800 GTX+ or better.

3) Don't overlook an ATI Radeon 4870, or any of their 48xx series.