GeForce GT 430 (OEM) vs Radeon HD 4790

Intro

Compare that to the Radeon HD 4790, which features GPU clock speed of 600 MHz, and 512 MB of GDDR5 memory set to run at 800 MHz through a 256-bit bus. It also features 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 4790 should in theory be a lot superior to the GeForce GT 430 (OEM) in general. (explain)

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

Texel Rate

The Radeon HD 4790 should be a lot (approximately 71%) faster with regards to anisotropic filtering than the GeForce GT 430 (OEM). (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 4790 is a better choice, by far. (explain)

Radeon HD 4790		9600 Mpixels/sec
GeForce GT 430 (OEM)		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 information (measured in megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core 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 rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.