Speed

• The core processor speed for the 4650 is 600 MHz. The card has a basic memory clock speed of 500MHz, but because DDR (Double Data Rate) memory is used, the resultant memory clock speed is 1GHz.
  
  

Memory

• The card uses 512MB of 128-bit GDDR2 RAM and the memory bandwidth, which is how fast the card accesses its RAM, is 16GB per second.
  
  

Performance

• The HD 4650 can perform at a rate of 384 gigaFLOPS (floating point operations per second). It has a pixel fill rate of 4800 megapixels per second and a texture fill rate of 19200 megatexels per second.
  
  

Compliance Features

• The card uses Microsoft DirectX version 10.1 and OpenGL version 2.1. DirectX adjusts how the graphics card functions to suit the other hardware capabilities of your PC and OpenGL provides optimized system drivers to improve resource management so that the best balance is achieved between the graphics processing and other system processes.