http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00757531&lc=en&dlc=en&cc=us&product=3340227Motherboard description
* Motherboard manufacturer's name: ASUS A8M2N-LA
* HP/Compaq name: NodusM3-GL8E
CPU/Processor
* Socket: AM2
* Supports AMD Athlon 64, Athlon 64 X2, and Sempron processors
Front-side bus (FSB)
* 2000 MegaTransfers/second
Chipset
* GeForce 6150 LE chipset
BIOS features
* Award brand system BIOS
* Keyboard combination to used to enter BIOS: F1
Form factor
* Micro-ATX: 9.6 in X 9.6 in
Memory
* Four 240-pin DDR2 DIMM sockets
* Supports PC 4200 (533 MHz) and PC2 5300 (667 MHz) DDR2 DIMMs
* non-ECC memory only, unbuffered
* Maximum HP/Compaq approved memory is 4 GB*
NOTE: *Actual available memory may be less
Expansion slots
* Three PCI
* One PCI Express x16 graphics
Video graphics
* Integrated
I googled your power supply and I believe you have a 300W power supply. Your integrated video chipsets are never designed for 'real' gaming, especially the Geforce 6150LE. Your basically going to need to replace your power supply for any video card that is going to be good for gaming.
The good news is 1) you have a PCI-E 16x slot and 2) you have open RAM slots. If you really want to upgrade your computer, adding 2 x 1gb DDR2 sticks (total computer will be at 3gb) will really help in performance for the least amount of money. 2 x 1gb DDR2 sticks can run about $20 online. A new power supply (a good brand, non-bargain crap from the back alleys of China) is going to run at least $50-60. And a new video card is dependent on your budget as well. I recommend you read this article and use what is recommended on your budget:
http://www.tomshardware.com/reviews/best-graphics-card,2064-2.htmlSome cheaper highlights:
PCI Express Interface: $0 to $90
Best PCIe Card For Below $50:Passable 1024x768 performance in most games with lowered detail
Radeon HD 4350 Codename: RV630
Process: 65nm
Universal Shaders: 80
Texture Units: 8
ROPs: 4
Memory Bus: 64-bit
Core Speed MHz: 600
Memory Speed MHz: 400 (800 effective)
DirectX / Shader Model DX 10.1 / SM 4.0
The Radeon 4350 joins the list not because it’s a great gaming card, but because it can be found for only $40, while the 9400 GT starts at $50.
The cheapest true gaming cards are the Radeon 2600 XT and 9500 GT, but with these cards at the $60 price point they are impossible to recommend due to the fact that the $80 4670 and 9600 GSO are so much superior for just a few dollars more.
So, this round, the 4350 gets the nod as a baseline gaming card for playing at 1024x768. Frankly, though, it’s better suited as an HTPC card for video playback, low power use, and 7-channel audio over HDMI.
Best PCIe Card For $80: TieGood 1600x1200 performance in most games
Radeon HD 4670 GDDR3 Codename: RV730
Process: 55nm
Universal Shaders: 320
Texture Units: 32
ROPs: 8
Memory Bus: 128-bit
Core Speed MHz: 750
Memory Speed MHz: 1000 (2000 effective)
DirectX / Shader Model DX 10.1 / SM 4.0
The Radeon HD 4670 slaps previous generation high-end performance squarely in the jaw of mid-range pricing. With 320 shader processors, this card means business, and will provide awesome 1600x1200 gaming. Compared to the 9600 GSO, its main advantage is a low power requirement. It doesn’t need an external power cable, which for some upgraders is a really important feature.
GeForce 9600 GSO (aka GeForce 8800 GS) Codename: G92
Process: 65nm
Universal Shaders: 96
Texture Units: 48
ROPs: 12
Memory Bus: 192 or 128-bit
Core Speed MHz: 600
Memory Speed MHz: 900 (1800 effective)
DirectX / Shader Model DX 10 / SM 4.0
Previously a high-end card crippled and transformed into a high-to-mid-range card, the release of the Radeon HD 4670 has forced the 9600 GSO to a lower price to remain competitive—which it does. It’s an excellent alternative to the 4670, as long as the buyer compares clock speeds, and makes sure they have one of the desirable models (manufacturers seem to be following the reference speeds very loosely).