GeForce GT 430 1GB vs Radeon HD 6790

Intro

Compare all of that to the Radeon HD 6790, which makes use of a 40 nm design. AMD has set the core frequency at 840 MHz. The GDDR5 memory is set to run at a frequency of 1050 MHz on this card. It features 800 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
Radeon HD 6790		150 Watts
	Difference: 90 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6790 should perform quite a bit faster than the GeForce GT 430 1GB in general. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 105600 (367%)

Texel Rate

The Radeon HD 6790 will be quite a bit (about 200%) faster with regards to AF than the GeForce GT 430 1GB. (explain)

Radeon HD 6790		33600 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 22400 (200%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 6790 is a better choice, and very much so. (explain)

Radeon HD 6790		13440 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 10640 (380%)

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 max amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.