GeForce GT 440 1.5GB vs Radeon HD 4650 512MB

Intro

Compare those specifications to the Radeon HD 4650 512MB, which features core clock speeds of 600 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 RAM. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 512MB		55 Watts
GeForce GT 440 1.5GB		56 Watts
	Difference: 1 Watts (2%)

Memory Bandwidth

Theoretically, the GeForce GT 440 1.5GB should be a lot faster than the Radeon HD 4650 512MB overall. (explain)

GeForce GT 440 1.5GB		43200 MB/sec
Radeon HD 4650 512MB		16000 MB/sec
	Difference: 27200 (170%)

Texel Rate

The Radeon HD 4650 512MB should be much (about 35%) faster with regards to AF than the GeForce GT 440 1.5GB. (explain)

Radeon HD 4650 512MB		19200 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 4944 (35%)

Pixel Rate

The GeForce GT 440 1.5GB is quite a bit (approximately 197%) faster with regards to full screen anti-aliasing than the Radeon HD 4650 512MB, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
Radeon HD 4650 512MB		4800 Mpixels/sec
	Difference: 9456 (197%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.