GeForce GT 430 1GB vs Radeon HD 4790

Intro

Compare all of that to the Radeon HD 4790, which features core clock speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 4790 should theoretically be a lot better than the GeForce GT 430 1GB in general. (explain)

Radeon HD 4790		102400 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 73600 (256%)

Texel Rate

The Radeon HD 4790 is a lot (more or less 71%) faster with regards to anisotropic filtering than the GeForce GT 430 1GB. (explain)

Radeon HD 4790		19200 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 8000 (71%)

Pixel Rate

The Radeon HD 4790 should be a lot (about 243%) more effective at FSAA than the GeForce GT 430 1GB, and able to handle higher screen resolutions better. (explain)

Radeon HD 4790		9600 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 6800 (243%)

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 largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.