A Memory upgrade makes your computer faster, a video card upgrade makes your computer noticeably faster when your dealing with graphics.

Performance
 NVIDIA 9800 GTX+ 
 740 MHz GPU 
 128 Processing Cores
 400 MHz RAMDAC    
Memory
 512 MB, 256 bit DDR3 
 2200 MHz (effective) 
 70.4 GB/s Memory Bandwidth    
Interface
 PCI-E 2.0 16x
 DVI-I, DVI-I, HDTV-7
 SLI Capable 
Resolution & Refresh 
 240Hz Max Refresh Rate 
 2048x1536 Max Analog
 2560x1600 Max Digit
Key Features
 NVIDIA® SLI™ Technology
 NVIDIA® GigaThread™ Technology
 Full Microsoft® DirectX® 10 Shader Model 4.0 Support
 True 128-Bit Floating Point High Dynamic-Range (HDR)
 PCI Express® 2.0 / 1.1 Support
 NVIDIA® CUDA™ Support
 NVIDIA® PhysX™ Ready
 NVIDIA® PureVideo™ HD Technology
 OpenGL® 3.0 Support
 Unified Shader Architecture
 NVIDIA® Lumenex™ Engine

****SPECIAL NOTE: This upgrade includes a larger power supply ($20.00) included in the price. This is a mandatory upgrade to meet the specification of the video card. This is why you should buy from My Desktop PC. We make sure it's built right. The upgrade is a Corsair 450W 80 PLUS Certified Active PFC.