hi, im thinking of upgraing to a HD graphic card, however im not sure sure which one will be best suited to my comp specs, i.e, processing speed, space on motherboard etc.
Im not sure about the power supply output, or cooling system, I know there is a fan on the motherboard, and the case has a 12cm fan that blows onto the motherboard (with nice blue lights!). The card im looking to buy is:

Asus HD 4350 Silent 1GB DDR2 VGA DVI HDMI Out PCI-E Graphics Card
Specs: Product Description
Unprecedented 1GB on Board Memory for Best Graphical output!
Gigantic 1GB DDR2 memory on board
0db thermal solution
Unified Video Decoder 2 (UVD2)
Native HDMI Output support

Graphics Engine ATI Radeon HD 4350
Bus Standard PCI Express 2.0
Video Memory DDR2 1G
Effective Memory Size 1024 MB
Engine Clock 600 MHz
Memory Clock 800 MHz ( 400 MHz DDR2 )
Memory Interface 64-bit
CRT Max Resolution 2048 x 1536
DVI Max Resolution 2560 x 1600
D-Sub Output Yes x 1
DVI Output Yes x 1 (DVI-I)
HDMI Output Yes x 1
HDCP Support Yes




here are my comp specs:

Computer System
Manufacturer: Gigabyte Technology Co., Ltd.
Model: M52L-S3P
Operating System
Microsoft® Windows Vista™ Home Premium (Service Pack 2)
Version: 6.0.6002
Build Number: 6002
Install Date: 06/02/2010
Install Directory: C:\Windows
Locale: English (en) - United Kingdom (GB)
DirectX version: DirectX 11
Motherboard
Manufacturer: Gigabyte Technology Co., Ltd.
Model: M52L-S3P (vx.x)
Bios
Manufacturer: Award Software International, Inc.
Model: F1
Release Date: 31/12/2008
Processors
1.AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ (AuthenticAMD)
Max clock speed: 2.60 GHz
Socket: Socket M2
Version: Model 11, Stepping 2
Memory
Total Current Physical Memory: 3.00 GB
Total Current Virtual Memory: 6.21 GB
Maximum Memory Capacity: 2.00 GB
Memory Devices:
1.Type: DDR-2* - Speed: 667 MHz - Capacity: 1.00 GB
2.Type: DDR-2* - Speed: 667 MHz - Capacity: 1.00 GB
3.Type: DDR-2* - Speed: 667 MHz - Capacity: 1.00 GB
Video Devices
1.Radeon X1300/X1550 Series
Resolution: 1024 x 768
Colour Depth: 32 Bits
Refresh Rate: 60 Hz
2.Radeon X1300/X1550 Series Secondary
Resolution: x Colour Depth: Bits
Refresh Rate: Hz
Sound Devices:
1.Logitech Mic (Communicate STX)
2.Realtek High Definition Audio
3.M779 PCIe PAL/SECAM/DVB-T Desktop TV Tuner (Video Capture)

All your motherboard needs is a slot to put the board in, and it has that. As for the PSU, see my Power Supply Calculator sticky.

Thanks for you quick responce. Is it easy to take out my old card and put in the new one? How do i know it will fit? Also will my tv pic look a lot better?

G

Is it easy to take out my old card and put in the new one?

Physically removing the old and installing the new is easy - if you take care not damage the card through handling, or static. The tricky part is the drivers for the new card - the manual for the new card should explain how to install the card as a replacement/upgrade for another card.

How do i know it will fit?

Because your board supports PCIe and that is a PCIe card.

Also will my tv pic look a lot better?

I know nothing about your TV so I don't know. But it is likely with HD content, you will get a better image.

Thanks again. I'll order it and try it after i check that PSU issue. my old graphics card dosnt seem to allow me to play blu-ray or HD dvds with my sony BD-rom. Hopefully this card should fix that. One more question, is my processor fit to handle the new card specs?

One more question, is my processor fit to handle the new card specs?

Your processor does not care. It does not "handle" the graphics, it only hands off graphics tasks, which is an easy task for any CPU.

Is it possible for the graphic card to send audio to the plasma tv which is linked via a HDMI cable? At the minute im using soundblaster audio card, but no sound comes from the TV speakers, just the computer speakers?

That depends on the graphics cards. Graphics cards do NOT process audio, but some allow you to route audio through HDMI connectors. However, many don't and just send video through HDMI and audio through normal audio (sound card) connections. This information will be in the graphics card manual.

Thanks, before I order the card, will my PSU be able to work safely, its a Dell, P/N NH493 DC outpit, 305 watts. Input 100-120 v. Model L30SP-01. In UK
If not then what PSU specs do i need?

Before you order? Don't know what you mean by that. Isn't it working now?